EP0090862A1 - Monofilaments of low carboxyl content for use in fabricating a paper machine dryer fabric - Google Patents
Monofilaments of low carboxyl content for use in fabricating a paper machine dryer fabricInfo
- Publication number
- EP0090862A1 EP0090862A1 EP83900675A EP83900675A EP0090862A1 EP 0090862 A1 EP0090862 A1 EP 0090862A1 EP 83900675 A EP83900675 A EP 83900675A EP 83900675 A EP83900675 A EP 83900675A EP 0090862 A1 EP0090862 A1 EP 0090862A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polyester
- monofilament
- stabilizer
- percent
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 title claims abstract description 16
- 239000004744 fabric Substances 0.000 title claims abstract description 14
- 229920000728 polyester Polymers 0.000 claims abstract description 43
- 239000003381 stabilizer Substances 0.000 claims abstract description 23
- 238000005299 abrasion Methods 0.000 claims abstract description 16
- 230000015556 catabolic process Effects 0.000 claims abstract description 13
- 238000006731 degradation reaction Methods 0.000 claims abstract description 13
- 239000012815 thermoplastic material Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 15
- 230000003301 hydrolyzing effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 150000002148 esters Chemical class 0.000 claims description 6
- -1 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- 150000001718 carbodiimides Chemical class 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 229920001400 block copolymer Polymers 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical group C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- 150000003932 ketenimines Chemical class 0.000 claims description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 4
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 4
- 150000001541 aziridines Chemical class 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 241000517645 Abra Species 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 230000007062 hydrolysis Effects 0.000 description 6
- 238000006460 hydrolysis reaction Methods 0.000 description 6
- 239000000654 additive Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000012668 chain scission Methods 0.000 description 3
- 239000013065 commercial product Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- 238000002144 chemical decomposition reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- JIABEENURMZTTI-UHFFFAOYSA-N 1-isocyanato-2-[(2-isocyanatophenyl)methyl]benzene Chemical compound O=C=NC1=CC=CC=C1CC1=CC=CC=C1N=C=O JIABEENURMZTTI-UHFFFAOYSA-N 0.000 description 1
- KKEBXNMGHUCPEZ-UHFFFAOYSA-N 4-phenyl-1-(2-sulfanylethyl)imidazolidin-2-one Chemical compound N1C(=O)N(CCS)CC1C1=CC=CC=C1 KKEBXNMGHUCPEZ-UHFFFAOYSA-N 0.000 description 1
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000921 polyethylene adipate Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/92—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/15—Heterocyclic compounds having oxygen in the ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
Definitions
- This invention relates to a monofilament of low carboxyl content for use in fabricating a paper machine dryer fabric having improved resistance to hydrolytic degradation and abrasion.
- the invention also relates to a method of making this filament and to a composition therefor.
- Polyester monofilaments when woven into fabrics, have many applications in industrial filtration processes and as belts for conveying certain industrial product ' s. Such fabrics are used extensively in the paper industry to filter the wood pulp slurry and convey the formed paper to dryer sections of the paper-making process. The dryer section also contains conveying belts made out of industrial fabrics.
- It is another object of the invention to provide a composition comprising: a) a polyester; b) a polyester stabilizer; and c) a thermoplastic material.
- FIGURE 1 is a graph of the % of residual tensile strength vs. time showing a comparison in resistance to hydrolytic degradation between a commercial monofilament and the monofilament according to the invention.
- the polyester comprises polyethylene terephthalate.
- the thermoplastic material is selected from the group consisting of polyurethanes and polyetherester block copolymers.
- the polyester stabilizer is selected from the group consisting of glycidyl ethers, carbodiimides, ketenimines, hydroxyl containing compounds, aziridines and isocyanates.
- the preferred thermoplastic material consists of poly ⁇ butylene terephthalate-co-(multibutyleneoxy)tere- phthalate ⁇ . This is a Dupont material known as HYTREL.
- thermoplastic material to be added depends on the balance between the degree of abra- sion resistance required and the deterioration in the physical properties of the monofilament due to addition of the thermoplastic material. Amounts ranging from 1 percent to 30 percent of the compatible polymer may be used in the blend with 5 to 15 percent being the optimum for most applications.
- the preferred polyester stabilizer consists of a polycarbodiimide known under the trademark STABAXOL.
- polyester stabilizer Preferably, there is added about 0.1 to 5 percent by weight of said polyester stabilizer, more preferably about 1 to 2 percent by weight.
- the abrasion resistance can be improved by blending the polyester with optimum amounts of a compatible polymer which has superior abrasion resistance.
- compatible polymers with good abrasion resistance are polyurethanes produced by the reaction of methylene diphenyl isocyanate or tolylene diisocyanate with polyethylene adipate or phthalate or polyalkylene oxides.
- Elastomeric polyesters such as polyether-ester block copolymers are also compatible with good abrasion resistance.
- An example of elastomeric polyester is the commercial product marketed under the trademark of HYTREL which is poly ⁇ butylene tere- phthalate-co-(multibutyleneoxy)terephthalate ⁇ .
- the polymers mentioned above have melt points considerably lower than those of the polyesters into which they are incorporated.
- the hydrolytic stability of the polyester is improved by the addition of organic compounds such as carbodiimides which act as acid scavengers.
- organic compounds such as carbodiimides which act as acid scavengers.
- the carboxyl end-groups in the polyester molecules catalyze chain- scission at the ester linkages, thereby degrading the physical properties of the product.
- organic compounds with groups capable of reacting with the COOH end-groups are known to the prior art and may be used as stabilizers for polyesters. Examples of such groups known to the prior art are gly- cidyl ether, carbodiimide, ketenimine, hydroxyl, aziri- dine and isocyanate.
- the stabilizer is normally incor ⁇ porated in the molten resin immediately after polymeri ⁇ zation or in the extruder during the fabrication process .
- the stabilizer is good stability to high temperatures, a melting point below normal processing temperatures and lower diffusivity through the polymer.
- Polycarbodiimide such as those available commercially under the trademark of STABAXOL meet all those requirements and is used extensively with polyurethane and polyester products.
- the polycarbodiimide is not readily soluble in molten polyesters, and since it has a low viscosity, it cannot be processed in a conventional single screw extruder without creating erratic flow and conveying in the feed section of the screw. Expensive modifications of the extruder would be necessary in order to overcome the feed problems.
- An alternative to modifying the extruder is to compound the stabilizer in an appropriate carrier prior to incorporating into the polyester.
- the carrier for a compounded concentrate can be any thermoplastic material.
- a material having a low melt point to prevent thermal degradation of the stabilizer during compounding. It is also preferable to use a carrier that is compatible with the polyester.
- Poly- urethanes and elastomeric polyesters are the most suit ⁇ able carriers and this invention relates to their use in producing polyester monofilaments with low carboxyl con ⁇ tent.
- the method of making a monofilament of low carboxly content for use in fabricating a paper machine dryer fabric having improved resistance to hydrolytic degrada ⁇ tion and abrasion comprises: a) compounding a polyester stabilizer in a thermo ⁇ plastic material; b) incorporating the compounded material obtained in step a) with a polyester; and c) extruding the mixture obtained in step b) in a screw extruder so as to obtain a monofilament.
- resistance to hydrolytic degradation means resistance to chemical degradation from the reaction of steam with the polyester. The chemical degradation results in a loss in strength of the monofilament fiber.
- Monofilaments to be tested were wrapped around a tared polyethylene rod and reweighed to obtain the weight of monofilament used in the test.
- the rod with the mono- filament was spun in a sand slurry for 40 minutes .
- the sa ple was then removed, dried and reweighed to determine the weight loss.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
- Artificial Filaments (AREA)
- Woven Fabrics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Monofilaments à faible teneur en carboxyl destinés à être utilisés dans la fabrication de tissus de séchage de machine à papier, présentant une résistance améliorée contre la dégradation hydraulitique et l'abrasion. Le monofilament comprend un polyester, un stabilisateur polyester et un matériau thermoplastique. On décrit également le procédé de production ainsi que la composition de ce produit.Low carboxyl content monofilaments for use in the manufacture of paper machine drying fabrics, having improved resistance against hydraulic degradation and abrasion. The monofilament comprises a polyester, a polyester stabilizer and a thermoplastic material. The production process and the composition of this product are also described.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31027881A | 1981-10-09 | 1981-10-09 | |
US310278 | 1994-09-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0090862A1 true EP0090862A1 (en) | 1983-10-12 |
EP0090862A4 EP0090862A4 (en) | 1984-01-12 |
Family
ID=23201772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19830900675 Withdrawn EP0090862A4 (en) | 1981-10-09 | 1982-10-12 | Monofilaments of low carboxyl content for use in fabricating a paper machine dryer fabric. |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0090862A4 (en) |
JP (1) | JPS59500373A (en) |
AU (1) | AU1040283A (en) |
DE (1) | DE3249110T1 (en) |
GB (1) | GB2123839A (en) |
IT (1) | IT1148619B (en) |
NL (1) | NL8220462A (en) |
SE (1) | SE8303240D0 (en) |
WO (1) | WO1983001253A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5006162A (en) * | 1982-03-25 | 1991-04-09 | Ici Americas Inc. | Certain 2-(2-substituted benzoyl)-1,3,5-cyclohexanetriones |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60210659A (en) * | 1984-04-04 | 1985-10-23 | Polyplastics Co | Polyester composition having excellent resistance to boiling water |
JPS616390A (en) * | 1984-05-01 | 1986-01-13 | ジエイダブリユ−アイ・リミテツド | Cloth for dryer having yarn strand prepared from melt extrudable polyphenylene sulfide |
NL8700617A (en) * | 1987-03-16 | 1988-10-17 | Akzo Nv | PROCESS FOR MANUFACTURING YARNS BY MELTING SPINNING POLYETHYLENE TERPHALATE |
US5169711A (en) * | 1988-08-05 | 1992-12-08 | Jwi Ltd. | Paper makers forming fabric |
US5502120A (en) * | 1988-08-05 | 1996-03-26 | Jwi Ltd. | Melt-extruded monofilament comprised of a blend of polyethylene terephthalate and a thermoplastic polyurethane |
ES2064400T5 (en) * | 1989-03-17 | 2001-03-01 | Jwi Ltd | POLYESTER FORMATION FABRIC MODIFIED BY STABILIZED POLYURETHANE. |
EP0768395A3 (en) * | 1989-04-24 | 1998-01-28 | Albany International Corp. | Paper machine felts |
DE3930845A1 (en) * | 1989-09-15 | 1991-03-28 | Hoechst Ag | POLYESTER FIBERS MODIFIED WITH CARBODIIMIDES AND METHOD FOR THEIR PRODUCTION |
JP3228977B2 (en) * | 1991-03-14 | 2001-11-12 | ジョーンズ・マンヴィル・インターナショナル・インコーポレーテッド | Carbodiimide-modified polyester fiber and method for producing the same |
DE4307392C2 (en) * | 1993-03-10 | 2001-03-29 | Klaus Bloch | Monofilament with increased hydrolysis resistance based on polyester for use in technical fabrics and processes for its manufacture |
JP3110633B2 (en) * | 1994-02-02 | 2000-11-20 | 東レ株式会社 | Polyester compositions, monofilaments and industrial textiles |
DE4410399A1 (en) * | 1994-03-25 | 1995-09-28 | Hoechst Ag | Abrasion-resistant polyester blend with increased processing safety, monofilaments made of it and their production and use |
DE19511852A1 (en) * | 1995-03-31 | 1996-10-02 | Hoechst Trevira Gmbh & Co Kg | Heavy-duty core / sheath monofilaments for technical applications |
DE19511853A1 (en) * | 1995-03-31 | 1996-10-02 | Hoechst Trevira Gmbh & Co Kg | Heavy-duty core / sheath monofilaments for technical applications |
DE19547028A1 (en) * | 1995-12-15 | 1997-07-17 | Hoechst Trevira Gmbh & Co Kg | Hydrolysis-resistant polyester fibers and filaments, masterbatches and processes for the production of polyester fibers and filaments |
US5763538A (en) * | 1996-10-28 | 1998-06-09 | E. I. Du Pont De Nemours And Company | Process for making an oriented polyester article having improved hydrolytic stability |
US6147128A (en) * | 1998-05-14 | 2000-11-14 | Astenjohnson, Inc. | Industrial fabric and yarn made from recycled polyester |
DE19834008C2 (en) * | 1998-07-29 | 2000-11-30 | Johns Manville Int Inc | Monofilament bicomponent threads of the core sheath type, process for their production and their use |
US6589392B1 (en) * | 2001-10-18 | 2003-07-08 | Shakespeare Company Llc | Multicomponent monofilament for papermaking forming fabric |
WO2007089747A1 (en) | 2006-01-27 | 2007-08-09 | General Electric Company | Articles derived from compositions containing modified polybutylene terephthalate (pbt) random copolymers derived from polyethylene terephthalate (pet) |
WO2007089653A2 (en) | 2006-01-27 | 2007-08-09 | General Electric Company | Molding compositions containing polyalkylene terephthalates and modified polybutylene terephthalate (pbt) random copolymers derived from pet |
US7799838B2 (en) | 2006-07-26 | 2010-09-21 | Sabic Innovative Plastics Ip B.V. | Elastomer blends of polyesters and copolyetheresters derived from polyethylene terephthalate, method of manufacture, and articles therefrom |
US8309656B2 (en) | 2006-07-26 | 2012-11-13 | Sabic Innovative Plastics Ip B.V. | Elastomer blends containing polycarbonates and copolyetheresters derived from polyethylene terephthalate, method of manufacture, and articles therefrom |
US8158710B2 (en) | 2006-11-27 | 2012-04-17 | Sabic Innovative Plastics Ip B.V. | Polyester blends, methods of making, and articles formed therefrom |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2006810A1 (en) * | 1969-02-18 | 1970-09-24 | Toray Industries, Inc., Tokio | Polyester molding compound and process for its production |
US3652714A (en) * | 1970-02-20 | 1972-03-28 | Phillips Petroleum Co | Dyeable blends of poly(ethylene terephthalate) and polyesterether polymers |
AU3295578A (en) * | 1978-02-02 | 1978-05-25 | The Goodyear Tire & Rubber Company | Screen for papermaking apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3904706A (en) * | 1973-03-15 | 1975-09-09 | Du Pont | Stabilization of polymers containing poly(alkylene oxide) units |
US4156702A (en) * | 1973-10-29 | 1979-05-29 | E. I. Du Pont De Nemours And Company | Adhesion promoted block copolyester composition with multi-functional carboxylic compound |
US4167541A (en) * | 1977-05-12 | 1979-09-11 | Fiber Industries, Inc. | Continuous carrierless dyeable polyesters |
-
1982
- 1982-10-11 IT IT49252/82A patent/IT1148619B/en active
- 1982-10-12 EP EP19830900675 patent/EP0090862A4/en not_active Withdrawn
- 1982-10-12 GB GB08315841A patent/GB2123839A/en not_active Withdrawn
- 1982-10-12 JP JP58500145A patent/JPS59500373A/en active Pending
- 1982-10-12 DE DE19823249110 patent/DE3249110T1/en not_active Withdrawn
- 1982-10-12 AU AU10402/83A patent/AU1040283A/en not_active Abandoned
- 1982-10-12 NL NL8220462A patent/NL8220462A/en unknown
- 1982-10-12 WO PCT/US1982/001465 patent/WO1983001253A1/en not_active Application Discontinuation
-
1983
- 1983-06-08 SE SE8303240A patent/SE8303240D0/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2006810A1 (en) * | 1969-02-18 | 1970-09-24 | Toray Industries, Inc., Tokio | Polyester molding compound and process for its production |
US3652714A (en) * | 1970-02-20 | 1972-03-28 | Phillips Petroleum Co | Dyeable blends of poly(ethylene terephthalate) and polyesterether polymers |
AU3295578A (en) * | 1978-02-02 | 1978-05-25 | The Goodyear Tire & Rubber Company | Screen for papermaking apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of WO8301253A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5006162A (en) * | 1982-03-25 | 1991-04-09 | Ici Americas Inc. | Certain 2-(2-substituted benzoyl)-1,3,5-cyclohexanetriones |
Also Published As
Publication number | Publication date |
---|---|
SE8303240L (en) | 1983-06-08 |
IT8249252A0 (en) | 1982-10-11 |
EP0090862A4 (en) | 1984-01-12 |
DE3249110T1 (en) | 1984-04-19 |
IT1148619B (en) | 1986-12-03 |
AU1040283A (en) | 1983-04-27 |
NL8220462A (en) | 1983-09-01 |
JPS59500373A (en) | 1984-03-08 |
GB2123839A (en) | 1984-02-08 |
WO1983001253A1 (en) | 1983-04-14 |
GB8315841D0 (en) | 1983-07-13 |
SE8303240D0 (en) | 1983-06-08 |
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Legal Events
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