WO2018007359A1 - Shoe uppers - Google Patents
Shoe uppers Download PDFInfo
- Publication number
- WO2018007359A1 WO2018007359A1 PCT/EP2017/066581 EP2017066581W WO2018007359A1 WO 2018007359 A1 WO2018007359 A1 WO 2018007359A1 EP 2017066581 W EP2017066581 W EP 2017066581W WO 2018007359 A1 WO2018007359 A1 WO 2018007359A1
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- WO
- WIPO (PCT)
- Prior art keywords
- chain
- tpu
- monomer
- diisocyanate
- upper according
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0225—Composite materials, e.g. material with a matrix
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0215—Plastics or artificial leather
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/126—Uppers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/227—Catalysts containing metal compounds of antimony, bismuth or arsenic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5003—Polyethers having heteroatoms other than oxygen having halogens
- C08G18/5015—Polyethers having heteroatoms other than oxygen having halogens having fluorine atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
Definitions
- the present invention relates to an upper for a footwear article, said upper comprising at least one panel having at least one layer made from a composition comprising a fluorinated thermoplastic polyurethane polymer.
- Uppers for footwear articles are generally formed by stitching together a plurality of exterior panel sections.
- These exterior panel sections can be made of several materials, such as natural and leather, plastic, mesh and non-woven fabrics.
- Non-woven fabrics are defined as fabric-like materials made from long fibers, bonded together by chemical, mechanical, heat or solvent treatment. The term is used in the textile manufacturing industry to denote fabrics, such as felt, which are neither woven nor knitted.
- the long fibers consists of hydrogenated thermoplastic polymers, notably based on hydrogenated urethane (H-TPU).
- H-TPU polymers have been disclosed in the art for the manufacturing of the upper part of shoes, for example in US 20100186874 PUMA AKTIENGESELLSCHAFT RUDOLF DASSLER SPORT , US 2013/0169219 PUMA SE and US 2014/0082961 REEBOK INTERNATIONAL LIMITED .
- Heat processable elastomeric polyurethanes comprising (per)fluoropoly- ether blocks were disclosed for example in US 5332798 AUSIMONT S.P.A. .
- the Applicant perceived the need of providing a new polymeric material that can be useful for the manufacture of the upper of footwear articles, notably shoes and boots, characterized by having improved properties when compared to hydrogenated thermoplastic polyurethane polymers (TPU). More in particular, the Applicant focused on providing a polymeric material having improved resistance to stain, improved chemical and wear resistance, low temperature flexibility, silky feel while maintaining good mechanical properties.
- TPU hydrogenated thermoplastic polyurethane polymers
- the present invention relates to an upper, for a footwear article, comprising at least one panel having at least one layer [layer E] made from a composition [composition (C)] comprising at least one fluorinated polyurethane [F-TPU polymer], said F-TPU polymer comprising recurring units derived from: [monomer (a)] at least one diol selected from the group comprising poly-ether type diol, poly-ester type diol, polybutadien-diol and polycarbonate-diol; [monomer (b)] at least one hydroxy-terminated (per)fluoropolyether polymer [PFPE polymer] ; [monomer (c)] at least one aromatic, aliphatic or cycloaliphatic diisocyanate; and [monomer (d)] at least one aliphatic, cycloaliphatic or aromatic diol having from 1 to 14 carbon atoms.
- composition (C)] comprising at least one fluorin
- said panel comprises layer E as single layer
- said panel comprises layer E as the outermost layer.
- the Applicant has surprisingly found that when layer E is the outermost layer, it provides a soft silky feeling to the touch, without the addition of plasticizer agents to said composition (C).
- the Applicant surprisingly found that when layer E is the outermost layer, the panel shows improved resistance to stain and an increased ease of cleaning, when compared to panels made from hydrogenated thermoplastic polyurethane (H-TPU) polymers.
- H-TPU hydrogenated thermoplastic polyurethane
- (per)fluoropolyether is intended to indicate a “fully or partially fluorinated polyether”
- (per)fluoropolyoxyalkylene chain” is intended to indicate a partially or fully fluorinated, straight or branched, polyoxyalkylene chain
- parentheses before and after symbols or numbers identifying compounds, chemical formulae or parts of formulae has the mere purpose of better distinguishing those symbols or numbers from the rest of the text and hence said parentheses can also be omitted
- - the term "upper” also referred to as “vamp” is intended to indicate the part of a footwear article (such as shoes, boot and the like) that covers the toes, the top of the foot, the sides of the foot, and the back of the heel, and is attached to the outsole of the footwear article
- panel is intended to indicate the part(s) that form(s) the upper.
- the upper can be manufactured using only one panel or joining together more than one panels.
- the panels can be selected from for example the toe box, the toe cap, the quarter, the vamp, the tongue, the counter and the back strap of a footwear.
- said F-TPU polymer is a block copolymer, i.e. a polymer comprising blocks (also referred to as “segments”), each block comprising recurring units deriving from at least one monomer (a), at least one monomer (b), at least one monomer (c) and at least one monomer (d), as defined above.
- said F-TPU polymer has an average number molecular weight of from 30,000 to about 70,000 Da.
- said F-TPU polymer has a melting point (T m ) of from about 120°C to about 240°C.
- said at least one monomer (a) has an average number molecular weight of from 500 to 4,000 Da, more preferably of from 1,000 to 4,000.
- said at least one monomer (a) is selected in the group comprising, more preferably consisting of, poly(ethylene)glycol, poly(propylene)glycol, poly(tetramethylen)glycol (PTMG), poly(1,4-butanediol)adipate, poly(ethandiol-1,4-butanedio) adipate, poly(1,6-hexandiol-neopentyl)glycol adipate, poly-caprolactone-diol (PCL) and polycarbonate-diol.
- Poly(tetramethylen)glycol, poly-caprolactone-diol and polycarbonate-diol being particularly preferred.
- said at least one monomer (b) is a hydroxy-terminated (per)fluoropolyether polymer [PFPE polymer], i.e. a polymer comprising a (per)fluoropolyoxyalkylene chain [chain (R pf )] having two chain ends, wherein one or both chain ends terminates with at least one -OH group.
- PFPE polymer hydroxy-terminated (per)fluoropolyether polymer
- At least one chain end of said chain terminates with a group of formula: -CH 2 (OCH 2 CH 2 ) t -OH (I) wherein t is 0 or from 1 to 5.
- both chain ends of said chain (R pf ) terminate with a group of formula (I) as defined above.
- said chain (R pf ) is a chain of formula -O-D-(CFX # ) z1 -O(R f )(CFX * ) z2 -D*-O- wherein z1 and z2, equal or different from each other, are equal to or higher than 1;
- D and D*, equal or different from each other are an alkylene chain comprising from 1 to 6 and even more preferably from 1 to 3 carbon atoms, said alkyl chain being optionally substituted with at least one perfluoroalkyl group comprising from 1 to 3 carbon atoms;
- (R f ) comprises, preferably consists of, repeating units R°, said repeating units being independently selected from the group consisting of: (i) -CFXO-, wherein X
- chain (R f ) is selected from the following formulae (R f -a) to (R f -c): (R f -a) -(CF 2 O) n (CF 2 CF 2 O) m (CF 2 CF 2 CF 2 O) p (CF 2 CF 2 CF 2 O) q - wherein m, n, p, q are 0 or integers selected in such a way as chain R f meets the above number average molecular weight requirement, with the proviso that if, p and q are simultaneously 0, n is not 0; when m is other than 0, the m/n ratio is preferably between 0.1 and 20; when (m+n) is other than 0, (p+q)/(m+n) is preferably between 0 and 0.2; (R f -b) -(CF 2 CF(CF 3 )O) a (CF 2 CF 2 O) b (CF 2 O) c (CF
- said PFPE polymer complies with the following formula (PFPE-I): HO-(CH 2 CH 2 O) t -CH 2 -(R pf )-CH 2 (OCH 2 CH 2 ) u -OH (PFPE-I) wherein t and u are, each independently, 0 or from 1 to 5; and R pf is as defined above.
- said PFPE polymer has an average number molecular weight of from 400 to 10,000 Da, more preferably from 1,000 to 5,000.
- the molar ratio between monomers (a) and monomers (b) is from 2 to 20, more preferably from 2 to 10.
- the amount of monomers (b) is such that the F-TPU polymer comprises from 4 to 30 wt.% of fluorine.
- said at least one monomer (c) has a number molecular weight of 500 Da or lower, preferably from 10 to 500 Da.
- said at least one monomer (c) is selected in the group comprising, preferably consisting of, 4,4’-methylene-diphenylene-di- isocyanate (MDI), 1,6-hexan-diisocyanate (HDI), 2,4-toluene-diisocyanate, 2,6-toluene-diisocyanate, xylilen-diisocyanate, naphthalene-diisocyanate, paraphenylen-diisocyana- te, hexamaethylen-diisocyanate, isophorone-diisocyanate, 4,4’-dicyclohexyl-methane-diisocyanate and cyclohexyl-1,4-diisocyanate. MDI and HDI being particularly preferred.
- said at least one monomer (d) is selected in the group comprising, preferably consisting of, ethylene-glycol, 1,4-butanediol (BDO), 1,6-hexane diol (HDO), N,N-diethanolamine and N,N-diisopropanolaniline.
- BDO and HDO being particularly preferred.
- the sum of blocks deriving from monomers (c) and (d) is from 10 to 60 wt.% based on the total weight of the F-TPU polymer.
- blocks comprising recurring units derived from monomers (a) and (b) are rubber-like blocks, while blocks comprising recurring units derived from monomers (c) and (d) are hard blocks.
- At least 80% of the blocks comprising recurring units derived from said monomers (b) [blocks B] are linked, at least one of their ends, to a block comprising recurring units derived from monomers (a) [blocks A] through a block comprising recurring units derived from monomers (c) [blocks C].
- at least 80% of blocks B are contained in a sequence of the following type: -[A-C-B-C]-.
- the F-TPU polymer can be prepared following the procedures disclosed in US 5332798 AUSIMONT S.P.A. , in particular in Example 15.
- the upper is made from a composition (C) that is free of plasticizer agents.
- said composition (C) comprises the F-TPU polymer as defined above as the main component.
- said F-TPU polymer is in an amount of at least 60 wt.%, more preferably at least 80 wt. %, even more preferably at least 85 wt. % based on the total weight of said composition (C) .
- composition (C) can optionally comprise further additives, such as for example antioxidants, thermal stabilizers, dyestuffs and fillers.
- composition (C) is essentially made of said F-TPU polymer in combination with an amount of up to 1 wt.% of any of the additives listed above are also encompassed by the present invention.
- said upper comprises a plurality of panels stitched together, each panel comprising a layer E as defined above.
- said upper comprises one single panel, which extends for the entire surface of the upper and comprises a layer E as defined above.
- Uppers comprising one single panel are also known as “unitary upper design”.
- Layer E can be manufactured following methods known in the art, for example by melt-blown process as disclosed in US 2010/0186874 cited above
- layer E can be manufactured by a process comprising the following steps: (i) providing a mould; (ii) filling said mould with a composition comprising at least one elastomeric fluorinated polyurethane [F-TPU polymer] as defined above; (iii) sealing the mould; (iv) heat treating the sealed mould; and (v) extracting the article from the mould.
- step (iv) comprises two steps, wherein the first step comprises heating at a first temperature for a time from 10 seconds to 10 minutes and the second step comprises heating at a second temperature, said second temperature being lower than said first temperature, for a time of from 30 seconds to 24 hours.
- said first temperature is from 120°C to 300°C.
- said second temperature is from 50°C to 200°C.
- step (iv) comprises only one step of heating at a temperature of from 50°C to 300°C for a time of from 10 seconds to 24 hours.
- step (iv) and before step (v) the mould is allowed to cool down.
- said at least one panel comprises layer E as the only layer.
- said at least one panel comprises layer E as defined above and at least one texture layer [layer T] consisting of texture yarns.
- the upper according to the present invention comprises at least one panel comprising layer E as defined above, said layer E having an external surface and an internal surface, wherein at least a part of said internal surface is connected with a texture layer [layer T] consisting of texture yarns.
- the upper according to the present invention comprises at least one panel comprising layer E as defined above and two layers T consisting of texture yarns, wherein layer E is interposed between two layers T.
- the upper comprises layer E and layer(s) T
- the upper is obtained by welding together layer E and layer(s) T.
- the welding can be performed for example using a high-frequency welding process or an ultrasonic sound welding process.
- the present invention relates to a footwear article comprising an upper as defined above.
- F-TPU polymer specimens Preparation of F-TPU polymer specimens – method A F-TPU polymer specimens 1 to 4 in the form of sheet were prepared starting from the abovementioned monomers following the same procedure detailed in Example 15 of US 5,332,798 (to Ausimont S.p.A.) cited above. F-TPU polymers thus obtained contained 20 wt.% of recurring units derived from monomers (b).
- F-TPU polymer specimens 5 to 7 and 8 (the latter as comparison) in the form of sheet were prepared as follows: - the hydrogenated pre-polymer was synthetized by reacting monomer (c) and monomer (a) in the equivalent ratio 2 to 1, at a temperature of 90°C; - the fluorinated pre-polymer was synthetized by reacting monomer (c) and monomer (b) in the equivalent ratio 2 to 1, at a temperature of 90°C; - the hydrogenated pre-polymer and the fluorinated pre-polymer were then mixed together and stirred at 90°C for 30 minutes; - monomer (c) was further added depending on the selected stoichiometry; - the reaction was continued at 90°C for 3 minutes until chain-extension was completed; - the polymer thus obtained was casted at 100°C for 24 hours.
- compositions of the F-TPU polymers obtained following methods A and B described above and the compositions of comparative hydrogenated polyurethane polymers (H-TPU) are reported in the following Table 1.
- H-TPU 9* a commercially available hydrogenated TPU
- the monomers ratio for H-TPU 9* is not publicly available.
- Table 1 Monomers (ratio by mol) a1 a2 a3 a4 b1 b2 c1 c2 d1 d2 F-TPU 1 0.8 - - - 0.2 - 2.0 - 1.0 - F-TPU 2 - 0.7 - - 0.3 - 3.0 - 2.0 - F-TPU 3 - 0.6 - - - 0.4 2.5 - 1.5 - F-TPU 4 - - - 0.75 0.25 - - 2.0 - 1.0 F-TPU 5 0.75 - - - - 0.25 - 3.0 2.0 - F-TPU 6 - - 0.75 - - 0.25 - 2.0 1.0 - F-TPU 7 4.0 - - - - 0.3 - 0.7 3.0 - H-TPU 8(
- the static contact angle (SCA) of a sessile drop (about 5 ⁇ L) of water and n-hexadecane as solvents was measured with the DSA30 instrument (Krüss GmbH, Germany).
- the SCA values as well as standard deviations were calculated among ten contact angles.
- SFE Surface free energy
- test was performed with the instrument Taber Industries 5750 Linear Abraser, that was set to run at the following conditions: - cycle speed: 30 cycles/min - stroke length: 2.54 cm (1 inch) - number of cycles: 200 - total load: 1 kg.
- Tests were performed once with dry denim and once with wet denim on F-TPU 1, F-TPU 2, F-TPU 3, F-TPU 5 and F-TPU 7.
- denim Before performing the test with wet denim, denim was submerged in water for 10 second, then it was removed and water was squeezed out by hand so that denim did not drip but was wet to the touch.
- the tests were performed as follows: a denim sample measuring approximately 30 mm x 30 mm was fixed to a fixture in order to prevent shifting of the sample during the test. A sample of each F-TPU and of H-TPU was then placed on the denim sample and fixed to the fixture as well.
- a drop of each staining agent listed above was put into contact with the surface of a specimen made from F-TPU 1 and let for 24 hours at ambient conditions. The specimen was then cleaned with water.
- a specimen made from H-TPU was used as comparison and treated as disclosed above.
- the haptic properties (notably the feeling of softness) of F-TPUs and the H-TPUs were measured by testing the sheets of the materials subjectively by hand feel of 5 individuals.
- Soft feel was measured subjectively by hand touch and rated on a scale from 1 to 5, with 1 being poor soft feel (hard feel) and 5 being excellent soft feel. Participants took part in this study individually, so they did not influence each other in their responses. Participants were presented with the four samples in a random order and asked to feel and rate them.
- Table 5 Sample Rating Individual 1 Individual 2 Individual 3 Individual 4 Individual 5 Average F-TPU 1 4 5 4 4 5 4.4 F-TPU 2 5 5 5 4 5 4.8 F-TPU 3 5 4 4 4 4 4 4.2 F-TPU 4 5 5 5 4 5 4.8 F-TPU 5 5 4 4 3 4 4.0 F-TPU 6 5 4 5 4 4 4.4 F-TPU 7 4 4 4 5 4.2 H-TPU 8(*) 2 1 1 1 2 1.4 H-TPU 9(*) 2 2 1 1 2 1.6
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Polyurethanes Or Polyureas (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
Description
[monomer (a)] at least one diol selected from the group comprising poly-ether type diol, poly-ester type diol, polybutadien-diol and polycarbonate-diol;
[monomer (b)] at least one hydroxy-terminated (per)fluoropolyether polymer [PFPE polymer] ;
[monomer (c)] at least one aromatic, aliphatic or cycloaliphatic diisocyanate; and
[monomer (d)] at least one aliphatic, cycloaliphatic or aromatic diol having from 1 to 14 carbon atoms.
- the term “(per)fluoropolyether” is intended to indicate a “fully or partially fluorinated polyether";
- the expression “(per)fluoropolyoxyalkylene chain” is intended to indicate a partially or fully fluorinated, straight or branched, polyoxyalkylene chain;
- the use of parentheses before and after symbols or numbers identifying compounds, chemical formulae or parts of formulae has the mere purpose of better distinguishing those symbols or numbers from the rest of the text and hence said parentheses can also be omitted;
- the term "upper" (also referred to as “vamp”) is intended to indicate the part of a footwear article (such as shoes, boot and the like) that covers the toes, the top of the foot, the sides of the foot, and the back of the heel, and is attached to the outsole of the footwear article;
- the term “panel” is intended to indicate the part(s) that form(s) the upper. The upper can be manufactured using only one panel or joining together more than one panels. When more two or more panels are joined together to form the upper, the panels can be selected from for example the toe box, the toe cap, the quarter, the vamp, the tongue, the counter and the back strap of a footwear.
Poly(tetramethylen)glycol, poly-caprolactone-diol and polycarbonate-diol being particularly preferred.
-CH2(OCH2CH2)t-OH (I)
wherein
t is 0 or from 1 to 5.
-O-D-(CFX#)z1-O(Rf)(CFX*)z2-D*-O-
wherein
z1 and z2, equal or different from each other, are equal to or higher than 1; X# and X*, equal or different from each other, are -F or -CF3, provided that when z1 and/or z2 are higher than 1, X# and X* are -F;
D and D*, equal or different from each other, are an alkylene chain comprising from 1 to 6 and even more preferably from 1 to 3 carbon atoms, said alkyl chain being optionally substituted with at least one perfluoroalkyl group comprising from 1 to 3 carbon atoms;
(Rf) comprises, preferably consists of, repeating units R°, said repeating units being independently selected from the group consisting of:
(i) -CFXO-, wherein X is F or CF3;
(ii) -CFXCFXO-, wherein X, equal or different at each occurrence, is F or CF3, with the proviso that at least one of X is –F;
(iii) -CF2CF2CW2O-, wherein each of W, equal or different from each other, are F, Cl, H;
(iv) -CF2CF2CF2CF2O-;
(v) -(CF2)j-CFZ-O- wherein j is an integer from 0 to 3 and Z is a group of general formula -O-R(f-a)-T, wherein R(f-a) is a fluoropolyoxyalkene chain comprising a number of repeating units from 0 to 10, said recurring units being chosen among the following : -CFXO- , -CF2CFXO-, -CF2CF2CF2O-, -CF2CF2CF2CF2O-, with each of each of X being independently F or CF3 and T being a C1-C3 perfluoroalkyl group.
(Rf-a) -(CF2O)n(CF2CF2O)m(CF2CF2CF2O)p(CF2CF2CF2CF2O)q-
wherein m, n, p, q are 0 or integers selected in such a way as chain Rf meets the above number average molecular weight requirement, with the proviso that if, p and q are simultaneously 0, n is not 0; when m is other than 0, the m/n ratio is preferably between 0.1 and 20; when (m+n) is other than 0, (p+q)/(m+n) is preferably between 0 and 0.2;
(Rf-b) -(CF2CF(CF3)O)a(CF2CF2O)b(CF2O)c(CF(CF3)O)d-
wherein a, b, c, d are 0 or integers selected in such a way as chain Rf meets the above number average molecular weight requirement; with the proviso that, at least one of a, c and d is not 0; when b is other than 0, a/b is preferably between 0.1 and 10; when (a+b) is different from 0 (c+d)/(a+b) preferably is between 0.01 and 0.5, more preferably between 0.01 and 0.2;
(Rf-c) -(CF2CF(CF3)O)e(CF2O)f(CF(CF3)O)g-
wherein e, f, g are 0 or integers selected in such a way as chain Rf meets the above number average molecular weight requirement; when e is other than 0, (f+g)/e is preferably between 0.01 and 0.5, more preferably between 0.01 and 0.2.
HO-(CH2CH2O)t-CH2-(Rpf)-CH2(OCH2CH2)u-OH (PFPE-I)
wherein
t and u are, each independently, 0 or from 1 to 5; and
Rpf is as defined above.
MDI and HDI being particularly preferred.
BDO and HDO being particularly preferred.
In other words, at least 80% of blocks B are contained in a sequence of the following type: -[A-C-B-C]-.
(i) providing a mould;
(ii) filling said mould with a composition comprising at least one elastomeric fluorinated polyurethane [F-TPU polymer] as defined above;
(iii) sealing the mould;
(iv) heat treating the sealed mould; and
(v) extracting the article from the mould.
- Monomers (a):
(a1) CAPATM 2201 (from Perstorp) polycaprolactone-diol (PLC) having molecular weight (Mw) of about 2,000 and -OH value of about 56 mg KOH/g;
(a2) polytetramethyleneglycol (PTMEG) having Mw of about 2,000
(a3) ETERNACOLL® UH200 (from UBE) polycarbonate-diol (PCD) having Mw of about 2,000
(a4) BESTERTM (from DOW) polyester-diol having Mw of about 2,000
- Monomers (b) having formula:
H(OCH2CH2)pOCH2CF2O(CF2CF2O)m(CF2O)nCF2CH2O(CH2CH2O)pH
(b1) p=4.7 and Mw of about 2,000
(b2) p=1.6 and Mw of about 1,700
- Monomers (c):
(c1) diphenylen-4,4’-diisocyanate (MDI)
(c2) 1,6-hexan-diisocyanate (HDI)
- Monomers (d):
(d1) 1,4-butanediol (BDO)
(d2) 1,6-hexandiol (HDO)
- Catalyst:
bismuth neodecanoate
F-TPU polymer specimens 1 to 4 in the form of sheet were prepared starting from the abovementioned monomers following the same procedure detailed in Example 15 of US 5,332,798 (to Ausimont S.p.A.) cited above.
F-TPU polymers thus obtained contained 20 wt.% of recurring units derived from monomers (b).
F-TPU polymer specimens 5 to 7 and 8 (the latter as comparison) in the form of sheet were prepared as follows:
- the hydrogenated pre-polymer was synthetized by reacting monomer (c) and monomer (a) in the equivalent ratio 2 to 1, at a temperature of 90°C;
- the fluorinated pre-polymer was synthetized by reacting monomer (c) and monomer (b) in the equivalent ratio 2 to 1, at a temperature of 90°C;
- the hydrogenated pre-polymer and the fluorinated pre-polymer were then mixed together and stirred at 90°C for 30 minutes;
- monomer (c) was further added depending on the selected stoichiometry;
- the reaction was continued at 90°C for 3 minutes until chain-extension was completed;
- the polymer thus obtained was casted at 100°C for 24 hours.
Monomers (ratio by mol) | ||||||||||
a1 | a2 | a3 | a4 | b1 | b2 | c1 | c2 | d1 | d2 | |
F-TPU 1 | 0.8 | - | - | - | 0.2 | - | 2.0 | - | 1.0 | - |
F-TPU 2 | - | 0.7 | - | - | 0.3 | - | 3.0 | - | 2.0 | - |
F-TPU 3 | - | 0.6 | - | - | - | 0.4 | 2.5 | - | 1.5 | - |
F-TPU 4 | - | - | - | 0.75 | 0.25 | - | - | 2.0 | - | 1.0 |
F-TPU 5 | 0.75 | - | - | - | - | 0.25 | - | 3.0 | 2.0 | - |
F-TPU 6 | - | - | 0.75 | - | - | 0.25 | - | 2.0 | 1.0 | - |
F-TPU 7 | 4.0 | - | - | - | - | 0.3 | - | 0.7 | 3.0 | - |
H-TPU 8(*) | - | 1.0 | - | - | - | - | 2.0 | - | 1.0 | - |
H-TPU 9(*) | n/a | - | - | - | - | - | - | n/a | n/a | - |
n/a = value not available
Shore A | Tensile strength (MPa) | Elongation at break (%) | |
F-TPU 1 | 85 | 28.1 | 471 |
F-TPU 2 | 93 | 31 | 410 |
F-TPU 3 | 80 | 35 | 400 |
F-TPU 4 | 75 | 7.30 | 590 |
F-TPU 5 | 90 | 26.1 | 505 |
F-TPU 6 | 83 | 13 | 550 |
F-TPU 7 | 91 | 31.8 | 506 |
H-TPU 8(*) | 78 | 40 | 550 |
Sample | SCA H2O | SCA C16 | SFE (mN/m) |
F-TPU 1 | 104 | 64.5 | 16.1 |
F-TPU 2 | 110.5 | 63.6 | 15.09 |
F-TPU 3 | 106.7 | 62.9 | 15.90 |
F-TPU 4 | 86 | 61 | 23.6 |
F-TPU 5 | 105 | 68 | 14.9 |
F-TPU 6 | 103 | 66 | 16 |
F-TPU 7 | 98 | 70 | 16.9 |
H-TPU 8(*) | 77 | 46 | 30.93 |
H-TPU 9(*) | 81 | 29 | 31.7 |
SCA = Static Contact Angle
H2O = water
C16 = hexadecane
SFE = Surface Free Energy
- cycle speed: 30 cycles/min
- stroke length: 2.54 cm (1 inch)
- number of cycles: 200
- total load: 1 kg.
- after rub and
- after cleaning with isopropyl-alcohol (IPA).
++ = no stain
+ = mark/halo
- = stain
Staining agent | H-TPU(*) | F-TPU 1 |
Olive oil | - | ++ |
Ketchup | + | ++ |
Hot coffee | - | + |
Mayonaise | - | ++ |
Coca Cola | - | ++ |
Mustard | - | + |
Vinager | ++ | ++ |
Windex® cleaner | + | + |
Formula 409® cleaner | + | + |
Purell® hand sanitizer | - | ++ |
Vaseline intensive care lotion | - | ++ |
Alcohol | - | ++ |
Sample | Rating | |||||
Individual 1 | Individual 2 | Individual 3 | Individual 4 | Individual 5 | Average | |
F-TPU 1 | 4 | 5 | 4 | 4 | 5 | 4.4 |
F-TPU 2 | 5 | 5 | 5 | 4 | 5 | 4.8 |
F-TPU 3 | 5 | 4 | 4 | 4 | 4 | 4.2 |
F-TPU 4 | 5 | 5 | 5 | 4 | 5 | 4.8 |
F-TPU 5 | 5 | 4 | 4 | 3 | 4 | 4.0 |
F-TPU 6 | 5 | 4 | 5 | 4 | 4 | 4.4 |
F-TPU 7 | 4 | 4 | 4 | 4 | 5 | 4.2 |
H-TPU 8(*) | 2 | 1 | 1 | 1 | 2 | 1.4 |
H-TPU 9(*) | 2 | 2 | 1 | 1 | 2 | 1.6 |
Claims (15)
- An upper, for a footwear article, comprising at least one panel having at least one layer [layer E] made from a composition [composition (C)] comprising at least one fluorinated polyurethane [F-TPU polymer], said F-TPU polymer comprising recurring units derived from:[monomer (a)] at least one diol selected from the group comprising poly-ether type diol, poly-ester type diol, polybutadien-diol and polycarbonate-diol;[monomer (b)] at least one hydroxy-terminated (per)fluoropolyether polymer [PFPE polymer];[monomer (c)] at least one aromatic, aliphatic or cycloaliphatic diisocyanate; and[monomer (d)] at least one aliphatic, cycloaliphatic or aromatic diol having from 1 to 14 carbon atoms.
- The upper according to claim 1, wherein said at least one monomer (a) is selected in the group comprising poly(ethylene)glycol, poly(propylene)glycol, poly(tetramethylen)glycol (PTMG), poly(1,4-butanediol)adipate, poly(ethandiol-1,4-butanedio) adipate, poly(1,6-hexandiol-neopentyl)glycol adipate, poly-caprolactone-diol (PCL) and polycarbonate-diol.
- The upper according to claim 1 or 2, wherein said at least one monomer (b) is a hydroxy-terminated PFPE polymer comprising a (per)fluoropolyoxyalkylene chain [chain (Rpf)] having two chain ends, wherein one or both chain ends terminates with at least one -OH group.
- The upper according to claim 3, wherein at least one chain end of said chain (Rpf) terminates with a group of formula (I):-CH2(OCH2CH2)t-OH (I)whereint is 0 or from 1 to 5.
- The upper according to claim 3, wherein both chain ends of said chain (Rpf) terminate with a group of formula (I):-CH2(OCH2CH2)t-OH (I)whereint is 0 or from 1 to 5.
- The upper according to any one of claims 3 to 5, wherein said chain (Rpf) is a chain of formula-O-D-(CFX#)z1-O(Rf)(CFX*)z2-D*-O-whereinz1 and z2, equal or different from each other, are equal to or higher than 1; X# and X*, equal or different from each other, are -F or -CF3, provided that when z1 and/or z2 are higher than 1, X# and X* are -F;D and D*, equal or different from each other, are an alkylene chain comprising from 1 to 6 and even more preferably from 1 to 3 carbon atoms, said alkyl chain being optionally substituted with at least one perfluoroalkyl group comprising from 1 to 3 carbon atoms;(Rf) comprises, preferably consists of, repeating units R°, said repeating units being independently selected from the group consisting of:(i) -CFXO-, wherein X is F or CF3;(ii) -CFXCFXO-, wherein X, equal or different at each occurrence, is F or CF3, with the proviso that at least one of X is –F;(iii) -CF2CF2CW2O-, wherein each of W, equal or different from each other, are F, Cl, H;(iv) -CF2CF2CF2CF2O-;(v) -(CF2)j-CFZ-O- wherein j is an integer from 0 to 3 and Z is a group of general formula -O-R(f-a)-T, wherein R(f-a) is a fluoropolyoxyalkene chain comprising a number of repeating units from 0 to 10, said recurring units being chosen among the following : -CFXO- , -CF2CFXO-, -CF2CF2CF2O-, -CF2CF2CF2CF2O-, with each of each of X being independently F or CF3 and T being a C1-C3 perfluoroalkyl group.
- The upper according to claim 6, wherein said chain (Rf) is selected from the following formulae (Rf-a) to (Rf-c):(Rf-a) -(CF2O)n(CF2CF2O)m(CF2CF2CF2O)p(CF2CF2CF2CF2O)q-wherein m, n, p, q are 0 or integers selected in such a way as chain Rf meets the above number average molecular weight requirement, with the proviso that if, p and q are simultaneously 0, n is not 0; when m is other than 0, the m/n ratio is preferably between 0.1 and 20; when (m+n) is other than 0, (p+q)/(m+n) is preferably between 0 and 0.2;(Rf-b) -(CF2CF(CF3)O)a(CF2CF2O)b(CF2O)c(CF(CF3)O)d-wherein a, b, c, d are 0 or integers selected in such a way as chain Rf meets the above number average molecular weight requirement; with the proviso that, at least one of a, c and d is not 0; when b is other than 0, a/b is preferably between 0.1 and 10; when (a+b) is different from 0 (c+d)/(a+b) preferably is between 0.01 and 0.5, more preferably between 0.01 and 0.2;(Rf-c) -(CF2CF(CF3)O)e(CF2O)f(CF(CF3)O)g-wherein e, f, g are 0 or integers selected in such a way as chain Rf meets the above number average molecular weight requirement; when e is other than 0, (f+g)/e is preferably between 0.01 and 0.5, more preferably between 0.01 and 0.2.
- The upper according to any one of the preceding claims, wherein said PFPE polymer complies with the following formula (PFPE-I):HO-(CH2CH2O)t-CH2-(Rpf)-CH2(OCH2CH2)u-OH (PFPE-I)whereint and u are, each independently, 0 or from 1 to 5; andRpf is as defined in claim 6.
- The upper according to any one of the preceding claims, wherein said at least one monomer (c) is selected in the group comprising 4,4-methylene-diphenylene-di-isocyanate (MDI), 1,6-hexan-diisocyanate (HDI), 2,4-toluene-diisocyanate, 2,6-toluene-diisocyanate, xylilen-diisocyanate, naphthalene-diisocyanate, paraphenylen-diisocyanate, hexamethylen- diisocyanate, isophorone-diisocyanate, 4,4-dicyclohexyl-methane-diisocyanate and cyclohexyl-1,4-diisocyanate.
- The upper according to any one of the preceding claims, wherein said at least one monomer (d) is selected in the group comprising ethylene-glycol, 1,4-butanediol (BDO), 1,6-hexane diol (HDO), N,N-diethanolamine and N,N-diisopropanolaniline.
- The upper according to any one of the preceding claims, wherein at least 80% of the blocks [blocks B] comprising recurring units derived from said monomer (b) are linked, at least one of their ends, to a block [block A] comprising recurring units derived from said monomer (a) through a block [block C] comprising recurring units derived from said monomer (c).
- The upper according to any one of the preceding claims, wherein said composition (C) is free of plasticizer agents.
- The upper according to any one of the preceding claims, wherein said composition (C) comprises said F-TPU polymer in an amount of at least 60 wt.% based on the total weight of said composition (C).
- The upper according to any one of the preceding claims, wherein said panel comprises layer E as outermost layer.
- A footwear article comprising an upper according to any one of claims 1 to 14.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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CN201780042427.XA CN109476810A (en) | 2016-07-07 | 2017-07-04 | Vamp |
KR1020197000011A KR20190024951A (en) | 2016-07-07 | 2017-07-04 | Shoes upper |
US16/315,944 US20200221825A1 (en) | 2016-07-07 | 2017-07-04 | Shoe uppers |
JP2019500318A JP2019523043A (en) | 2016-07-07 | 2017-07-04 | Upper |
EP17742658.2A EP3481882A1 (en) | 2016-07-07 | 2017-07-04 | Shoe uppers |
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EP16178295.8 | 2016-07-07 | ||
EP16178295 | 2016-07-07 |
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WO2018007359A1 true WO2018007359A1 (en) | 2018-01-11 |
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PCT/EP2017/066581 WO2018007359A1 (en) | 2016-07-07 | 2017-07-04 | Shoe uppers |
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US (1) | US20200221825A1 (en) |
EP (1) | EP3481882A1 (en) |
JP (1) | JP2019523043A (en) |
KR (1) | KR20190024951A (en) |
CN (1) | CN109476810A (en) |
WO (1) | WO2018007359A1 (en) |
Citations (6)
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US5332798A (en) | 1991-12-23 | 1994-07-26 | Ausimont S.P.A. | Fluorinated polyurethanes and polyurethane-ureas, and methods for preparing them |
US6342544B1 (en) * | 1999-04-14 | 2002-01-29 | Nike, Inc. | Durable outsole for article of footwear |
US20100186874A1 (en) | 2007-07-30 | 2010-07-29 | Puma Aktiengesellschaft Rudolf Dassler Sport | Method for the production of an upper shoe part |
US20130169219A1 (en) | 2011-12-29 | 2013-07-04 | Research In Motion Corporation | Power supply management for portable electronic devices |
US20140082961A1 (en) | 2007-04-10 | 2014-03-27 | Reebok International Limited | Smooth Shoe Uppers And Methods For Producing Them |
US20160058107A1 (en) * | 2014-08-27 | 2016-03-03 | Nike, Inc. | Article of footwear with soil-shedding performance |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1999045079A1 (en) * | 1998-03-05 | 1999-09-10 | Omnova Solutions Inc. | Easily cleanable polymer laminates |
WO2009010533A1 (en) * | 2007-07-18 | 2009-01-22 | Solvay Solexis S.P.A. | Aromatic hydrogenated polymers containing fluorine |
CN105970663A (en) * | 2016-03-08 | 2016-09-28 | 安徽安利材料科技股份有限公司 | A method of manufacturing self-cleaning polyurethane synthetic leather highly resistant to hydrolysis and highly resistant to ultraviolet light illumination aging |
-
2017
- 2017-07-04 EP EP17742658.2A patent/EP3481882A1/en not_active Withdrawn
- 2017-07-04 JP JP2019500318A patent/JP2019523043A/en active Pending
- 2017-07-04 KR KR1020197000011A patent/KR20190024951A/en unknown
- 2017-07-04 WO PCT/EP2017/066581 patent/WO2018007359A1/en unknown
- 2017-07-04 US US16/315,944 patent/US20200221825A1/en not_active Abandoned
- 2017-07-04 CN CN201780042427.XA patent/CN109476810A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5332798A (en) | 1991-12-23 | 1994-07-26 | Ausimont S.P.A. | Fluorinated polyurethanes and polyurethane-ureas, and methods for preparing them |
US6342544B1 (en) * | 1999-04-14 | 2002-01-29 | Nike, Inc. | Durable outsole for article of footwear |
US20140082961A1 (en) | 2007-04-10 | 2014-03-27 | Reebok International Limited | Smooth Shoe Uppers And Methods For Producing Them |
US20100186874A1 (en) | 2007-07-30 | 2010-07-29 | Puma Aktiengesellschaft Rudolf Dassler Sport | Method for the production of an upper shoe part |
US20130169219A1 (en) | 2011-12-29 | 2013-07-04 | Research In Motion Corporation | Power supply management for portable electronic devices |
US20160058107A1 (en) * | 2014-08-27 | 2016-03-03 | Nike, Inc. | Article of footwear with soil-shedding performance |
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JP2019523043A (en) | 2019-08-22 |
KR20190024951A (en) | 2019-03-08 |
CN109476810A (en) | 2019-03-15 |
US20200221825A1 (en) | 2020-07-16 |
EP3481882A1 (en) | 2019-05-15 |
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