US1836021A - Water dispersion of polymerized styrol and product made therefrom - Google Patents
Water dispersion of polymerized styrol and product made therefrom Download PDFInfo
- Publication number
- US1836021A US1836021A US493235A US49323530A US1836021A US 1836021 A US1836021 A US 1836021A US 493235 A US493235 A US 493235A US 49323530 A US49323530 A US 49323530A US 1836021 A US1836021 A US 1836021A
- Authority
- US
- United States
- Prior art keywords
- styrol
- fibres
- sheet
- fibre
- polymerized
- 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.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/485—Other fibrous materials fabric
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/35—Polyalkenes, e.g. polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Definitions
- This invention relates to the production of fibre and meta styrol combinations, more particularly to the provision of such combinations in sheet or slab form.
- An object of this invention is to provide a process of producing combinations of fibres and styrol, articularly the polymerized variety where y the styrol is intimately and uniformly associated with the fibres.
- Ill-further object is to provide a sheet or slab of fibrous material impregnated with polymerized styrol, particularlv the tough variety of meta styrol.
- Styrol may be used as such or polymerized to varying degrees of hardness and toughness.
- the various forms ofstyrol may be used as is found suitable.
- the normally tough variety termed allpslyia meta styrol as disclosed by Ostromislens s Patent No, 1,683,402 is preferably used.
- Styrol is a thermo-plastic and this allows molding the sheet or slab into any desired form, for instance such as shoe toe boxes, etc.
- the invention comprises broadly depositing styrol from a solution or disersion thereof upon a paper-making fibre "ea in pulp form, removing excess solvent or dis persing liquid and subsequently forming the mass mto a sheet or slab by drying and calendering or pressing.
- Theo erations may be carried out with thensua pa er-makin machinery involving the use of a. cater for eatin the ulp,prior to adding the styrol, unti itas nearly reached, the condition'required to form a satisfactory v piper or card makin machinery.
- the teritself may'be use as an agitator for the fibres and styrol or this may be carrie outinother mixinga thorough mixing of the so at of styrol, the
- thedeposition' is caused; b sheeting the pulp and removing the solvent y the. use ⁇ of heat or vacuumor both.
- the styroh sheet is employed,.the styroh sheet on any standardtype of pparatus. After 7 1011 or dispersion styrol is deposited on the fibres. 7
- a coagulant for the styrol is deposited in a uniform manner by adding a coagulant for the styrol.
- coagulants are methyl alcohol, barium chloride, alum, ethyl alco ol, acetone.
- all coagulating agents for 5 rubber latex serve to coagulate the styrol dispersion.
- Styrol in the form of an aqueous dispersion may be prepared as follows: Into an enclosed mixer are introduced 800 grams of dry polymerized styrol (alpha meta styrol).
- the fibres are made highly resistant to" water because the alkaliv salt or soaps are largel converted into water insoluble compoun' s1 upon reaction with coagulants such as those containing heavy metals and deposited with the styrol. Where the coagulant afi'ects .principally the styrol and an ammonium salt or soap is used, parts of this's'oap or salt may be caused to remain with.
- styrol is preferably softened before dispersion and other means, for instance,
- heat may lie-employed instead of softeners a such as 101, toiaccoin li'sh this purposa'j pre erred method of treatin fibres is. indicated as follows'zfcellulosic' bressuoh as-cutcotton rags are. laced in a paperbeater and beaten until t eyr are-sufliciently disintegrateda'nd hydrated; caustic sodais' added, to bring the beater contents; to 9,5100
- the proportionso st 01 and sizing or filling materials can varied as may be required b the character of the final sheet or'board.
- e sheet or board is moldable under heat, or the sheet or board may be first cut and then molded as would be the case in makin articles such as shoe toe boxes, etc.
- an aqueous dis ersion is mixed synthetic resins,-etc., or any of thesematerlals may be mcorporated with the fibre separately from the styrol as is found expediwith an or ic solution t e product is a w e in p I pregnate while in sheet, for examp .of' paper which has not -.'been 'su complex co oidal mixture of an aqueous dis rsion and an organosol. 4 gain instead of 1m regnati'n'g the fibres ulp term t e bres ma ime a sheet heavier pressures may be. impregnated with thesolutmn or dispersion of meta styrol.
- lhe fibres treated maybe oftvariou's kinds, an mal, vegetable or Jminer'al, ⁇ for-example ma, I q H M v It is muchg harder .properties, particularly at ulp is then run to containingla styrol in finel forming t which comprises thorough y mix of cellulosic fibres with an aqueous dispersion outthe mass a meta styrol compound.
- I I g I 10.- Afibre mass having dispersed cellulosic, asbestos, or': leather.' ij Itlisf t'o' be- .mpderstood that-variouscoinpounding, filling, 'i slzmgecolormgfand anti-ageing'ingredients" 11.
- styrol as is cons1dered-desirable: ;forf the final roduct.- .
- the producti 'provided herein can so that the product of manufact aper by this invention is stifler, harder, o tter e ectrical resistance and better dielectric high frequencies plaper.
- Various i styrol may e used in its stead, includedi ortho and 333a methyl styrol, symmetri meta-metaethyl styrol, etc., with similar than latex results.
- a process of making fibreproducts which comprises impregnating a mass ,of fibres with a polymerized styrol compound.
- a process of makin fibre products I fibre which comprises thoroug y mixinga masswhich comprises thorough y amass of cellulosic fibres with an ueous d1 containing a styrol in fine y .divide depositing1 the styrol upon the fibres, e mixture into a sheet or slab.
- a process 'ofimakin fibre products which comprises thorough y mixing a mass of cellulosic fibres with an aqueous d1 rsion containing a olymerized styrol in'finely divided form fibres and iorming the mixture into a sheet or s a 7.
- a process of makin fibre products a mass containing a normall tough polymerized styrol in nely divide form, depos ting the styrol upon the fibres, and forming the mixture into a sheet or slab.
- a fibre-styrol product having the fibres uniformly and intimately associated with a meta styrol compound.
- a fibre-styrol product having the fibres uniformly and intimately associated with a normally tough meta styrol compound.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paper (AREA)
- Reinforced Plastic Materials (AREA)
Description
Patented Dec. 15, 1931 1 UNITED STATES PAT T OF I E- T mm A. ernnons, or nomcmun, mew JERSEY, ASSIGNOB mo an inventor onmucsr. comm, or nanearucnconnnc'rrou'r, A oonronarrou or N- N 'ECTICUT warm msrn'nsron or ronmniznn sermon rnonnc'r mum 2|:Hausa'm'iaoni-v 1T0 Drawing.
This invention relates to the production of fibre and meta styrol combinations, more particularly to the provision of such combinations in sheet or slab form. A
5 An object of this invention is to provide a process of producing combinations of fibres and styrol, articularly the polymerized variety where y the styrol is intimately and uniformly associated with the fibres. A
" Ill-further object is to provide a sheet or slab of fibrous material impregnated with polymerized styrol, particularlv the tough variety of meta styrol.
Styrol may be used as such or polymerized to varying degrees of hardness and toughness. The various forms ofstyrol may be used as is found suitable. Where toughness, increased resistance to fracture, increased electrical resistance or increased resistance to water, acids, bases and mineral oils is desirable the normally tough variety termed allpslyia meta styrol as disclosed by Ostromislens s Patent No, 1,683,402 is preferably used. Styrol is a thermo-plastic and this allows molding the sheet or slab into any desired form, for instance such as shoe toe boxes, etc. Accordingly the invention comprises broadly depositing styrol from a solution or disersion thereof upon a paper-making fibre "ea in pulp form, removing excess solvent or dis persing liquid and subsequently forming the mass mto a sheet or slab by drying and calendering or pressing. Theo erations may be carried out with thensua pa er-makin machinery involving the use of a. cater for eatin the ulp,prior to adding the styrol, unti itas nearly reached, the condition'required to form a satisfactory v piper or card makin machinery. 3 The teritself may'be use as an agitator for the fibres and styrol or this may be carrie outinother mixinga thorough mixing of the so at of styrol, the
Where the carrier for the styrol is an organic solvent, thedeposition' is caused; b sheeting the pulp and removing the solvent y the. use} of heat or vacuumor both. Where an aqueous H dispersion ofstyrol is employed,.the styroh sheet on any standardtype of pparatus. After 7 1011 or dispersion styrol is deposited on the fibres. 7
Application filed November e, 19st. Serial no. 493,235.
is deposited in a uniform manner by adding a coagulant for the styrol. Examples of such coagulants are methyl alcohol, barium chloride, alum, ethyl alco ol, acetone. In general it may be said that all coagulating agents for 5 rubber latex serve to coagulate the styrol dispersion.
Styrol in the form of an aqueous dispersion may be prepared as follows: Into an enclosed mixer are introduced 800 grams of dry polymerized styrol (alpha meta styrol).
.To. this are aded 300 grams of xylol and the I of the higher fatty acids may be used such,
as sodium oleate, ammonium'oleate, etc. The fibres are made highly resistant to" water because the alkaliv salt or soaps are largel converted into water insoluble compoun' s1 upon reaction with coagulants such as those containing heavy metals and deposited with the styrol. Where the coagulant afi'ects .principally the styrol and an ammonium salt or soap is used, parts of this's'oap or salt may be caused to remain with. the fibres so that the subsequent drying where heat is employed will remove: the volatile constituent ammonia, leaving aresidue' also contributin to the fibre increased resistance to water e; styrol is preferably softened before dispersion and other means, for instance,
heat may lie-employed instead of softeners a such as 101, toiaccoin li'sh this purposa'j pre erred method of treatin fibres is. indicated as follows'zfcellulosic' bressuoh as-cutcotton rags are. laced in a paperbeater and beaten until t eyr are-sufliciently disintegrateda'nd hydrated; caustic sodais' added, to bring the beater contents; to 9,5100
ins
fairly alkaline condition, so as to guard against any premature coagulation of the styrol. For every 100 parts of fibre there is then mixed therewith from 20 to parts of the polymerized st rol in the form of an aqueous dispersion. fter thoroughly heating the mixture, alum is added until the pH changes to 45.0. The 1p a wet board-makin mac ine and laid down as a fibre mat. This de osit is wet pressed, dried, and d pressed to 've a suitable paper or boar Sizing suc as rosin size, where desired may be incorporated with the mixture, fbr example it may be added to the styrol dispersion before adding the same to the beater, or it ma be added separately. The proportionso st 01 and sizing or filling materials can varied as may be required b the character of the final sheet or'board. he fibre-styrol mixture in the form of sheets from the wet machine when dried at a temperature below the boiling oint of-water andthen each sheet pressed or about 10 minutes at 20# steam ressure with a pressure between platens o apgroximately 1200# per square inch gives a at sheet with fairly smooth surfaces on both sides. It is clear of course that higher steam pressures or subsequent desired hi hei' steam ressures magbe applied to the s eet,
e sheet or board is moldable under heat, or the sheet or board may be first cut and then molded as would be the case in makin articles such as shoe toe boxes, etc. Instea of impregnatin' the aper with a solution or dispersion o styrol; either of these may be mixed with dispers1ons or organic solutions of caoutchouc, reclaimed rubber, asphalt, pitches, balata, natural or ent. Where an aqueous dis ersion is mixed synthetic resins,-etc., or any of thesematerlals may be mcorporated with the fibre separately from the styrol as is found expediwith an or ic solution t e product is a w e in p I pregnate while in sheet, for examp .of' paper which has not -.'been 'su complex co oidal mixture of an aqueous dis rsion and an organosol. 4 gain instead of 1m regnati'n'g the fibres ulp term t e bres ma ime a sheet heavier pressures may be. impregnated with thesolutmn or dispersion of meta styrol.
lhe fibres treated maybe oftvariou's kinds, an mal, vegetable or Jminer'al, {for-example mama, I q H M v It is muchg harder .properties, particularly at ulp is then run to containingla styrol in finel forming t which comprises thorough y mix of cellulosic fibres with an aqueous dispersion outthe mass a meta styrol compound. I I g I 10.- Afibre mass having dispersed cellulosic, asbestos, or': leather.' ij Itlisf t'o' be- .mpderstood that-variouscoinpounding, filling, 'i slzmgecolormgfand anti-ageing'ingredients" 11. Ace ulosic fibre mass having dispersed I employed 1n-..con]unct1on withlthe:
' styrol as is cons1dered-desirable: ;forf the final roduct.- .The producti 'provided herein can so that the product of manufact aper by this invention is stifler, harder, o tter e ectrical resistance and better dielectric high frequencies plaper. Various i styrol may e used in its stead, includi ortho and 333a methyl styrol, symmetri meta-metaethyl styrol, etc., with similar than latex results.
. Having thus described my invention, vwha I claim and desire to protect by Letters Patent is:
1. A process of making fibreproducts which comprises impregnating a mass ,of fibres with a polymerized styrol compound.
2. A process of making fibre products omologues o fibres with a norma ly tough polymerized. I
styrol compound.
4. A process of makin' of cellulosic fibres with an 81311180118 dispersion 'videdform, depositin t e styrol upon e fibres and drymg an forming the mixture into the desired form..
5. A process of makin fibre products I fibre" products which comprises thoroug y mixinga masswhich comprises thorough y amass of cellulosic fibres with an ueous d1 containing a styrol in fine y .divide depositing1 the styrol upon the fibres, e mixture into a sheet or slab.
6. A process 'ofimakin fibre products which comprises thorough y mixing a mass of cellulosic fibres with an aqueous d1 rsion containing a olymerized styrol in'finely divided form fibres and iorming the mixture into a sheet or s a 7. A process of makin fibre products a mass containing a normall tough polymerized styrol in nely divide form, depos ting the styrol upon the fibres, and forming the mixture into a sheet or slab.
tamgbout the mass a normally tough polymermed styrol com and.
throughout the mass anormally tough polymerizedstyrol compound. v ."-;As,:a-new product a fibre sheet intimately associways epositing the styrol upon the a-fibre sheet having rsion form and 14. As anew product a fibre sheet having the fibres uniformly and intimately associated gith a normally tough meta styrol compoun 4 15. As a new product a cellulosic fibre sheet having the fibres uniformly and intimately associated with a st rol compound.
16. As a new pr not a cellulosic fibre sheet having the fibres uniformly and intimately associated with a meta styrol com ound.
17. As a new product a celluloslc fibre sheet having the fibres uniformly and intimately associated with a normally tough meta styrol compound.
18. A fibre-styrol product having the fibres uniformly and intimately associated with a meta styrol compound.
19'. A fibre-styrol product having the fibres uniformly and intimately associated with a normally tough meta styrol compound.
Signed at Passaic, county of Passaic, State of New Jersey, this 24th day of October, 1930.
"r'" II; 1' IS A. GIBBONS.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US493235A US1836021A (en) | 1930-11-03 | 1930-11-03 | Water dispersion of polymerized styrol and product made therefrom |
GB27120/31A GB372217A (en) | 1930-11-03 | 1931-09-29 | Improvements in or relating to process of making fibre products |
DEN32810D DE605903C (en) | 1930-11-03 | 1931-10-16 | Process for the production of synthetic compositions containing fibers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US493235A US1836021A (en) | 1930-11-03 | 1930-11-03 | Water dispersion of polymerized styrol and product made therefrom |
Publications (1)
Publication Number | Publication Date |
---|---|
US1836021A true US1836021A (en) | 1931-12-15 |
Family
ID=23959429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US493235A Expired - Lifetime US1836021A (en) | 1930-11-03 | 1930-11-03 | Water dispersion of polymerized styrol and product made therefrom |
Country Status (3)
Country | Link |
---|---|
US (1) | US1836021A (en) |
DE (1) | DE605903C (en) |
GB (1) | GB372217A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2440190A (en) * | 1944-03-01 | 1948-04-20 | Du Pont | Preparation of nonporous polytetrafluoroethylene articles |
US2455890A (en) * | 1943-01-02 | 1948-12-07 | Anglo Iranian Oil Co Ltd | Polystyrene-mineral oil extract plastic composition |
US2460976A (en) * | 1944-08-15 | 1949-02-08 | Falk & Company | Method of making plastic polystyrene |
US2474801A (en) * | 1945-09-15 | 1949-06-28 | Latex Fiber Ind Inc | Fibrous sheets formed from an aqueous suspension of a mixture of fibers and butadiene-styrene copolymer |
US2586092A (en) * | 1947-10-22 | 1952-02-19 | Reichhold Chemicals Inc | Emulsion copolymerization of styrene with bodied oil or bodied oil modified alkyd |
US2591754A (en) * | 1945-05-21 | 1952-04-08 | Auto Lite Battery Corp | Battery separator |
US2650163A (en) * | 1947-05-21 | 1953-08-25 | Hercules Powder Co Ltd | Butadiene-styrene sized paper and method |
DE764239C (en) * | 1934-12-22 | 1954-04-12 | Bosch Gmbh Robert | Pressurized seal for electrical capacitors with liquid or semi-solid impregnation or filling compound |
US2688774A (en) * | 1951-04-25 | 1954-09-14 | Monsanto Chemicals | Process for molding polystyrenes |
US2789903A (en) * | 1954-09-02 | 1957-04-23 | Celanese Corp | Process for production of shaped articles comprising fibrous particles and a copolymer of vinyl acetate and an ethylenically unsaturated acid |
US2877498A (en) * | 1954-10-18 | 1959-03-17 | Caspar C Schneider | Process for the manufacture of hollow articles from resin impregnated cellulosic materials |
US3203851A (en) * | 1958-06-18 | 1965-08-31 | Vinypal S A | Method of producing highly filled compressed masses of fiber-like filler material and thermoplastic synthetic material and compressed bodies made of such compressed masses, particularly plates and laminations |
US3879324A (en) * | 1968-04-29 | 1975-04-22 | Robert D Timmons | Solvent-free, aqueous resin dispersion |
US3919141A (en) * | 1974-07-12 | 1975-11-11 | Schenectady Chemical | Asbestos substitute |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE748428C (en) * | 1936-08-30 | 1944-07-29 | Solder-proof products | |
DE751173C (en) * | 1937-01-07 | 1952-01-31 | Freudenberg Carl Fa | Process for the production of leather substitutes |
DE745026C (en) * | 1937-10-06 | 1944-02-23 | Ig Farbenindustrie Ag | Process for the production of hollow bodies from fibrous material for packaging purposes |
DE748392C (en) * | 1942-01-18 | 1945-01-11 | Process for the production of lacquer-like lacquer and paint dispersions | |
US2765247A (en) * | 1953-04-14 | 1956-10-02 | Du Pont | Non-woven sheet material |
US2955067A (en) * | 1954-10-20 | 1960-10-04 | Rohm & Haas | Cellulosic paper containing ion exchange resin and process of making the same |
WO1981000422A1 (en) * | 1979-07-31 | 1981-02-19 | K Holbek | Process for the preparation of fibers |
-
1930
- 1930-11-03 US US493235A patent/US1836021A/en not_active Expired - Lifetime
-
1931
- 1931-09-29 GB GB27120/31A patent/GB372217A/en not_active Expired
- 1931-10-16 DE DEN32810D patent/DE605903C/en not_active Expired
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE764239C (en) * | 1934-12-22 | 1954-04-12 | Bosch Gmbh Robert | Pressurized seal for electrical capacitors with liquid or semi-solid impregnation or filling compound |
US2455890A (en) * | 1943-01-02 | 1948-12-07 | Anglo Iranian Oil Co Ltd | Polystyrene-mineral oil extract plastic composition |
US2440190A (en) * | 1944-03-01 | 1948-04-20 | Du Pont | Preparation of nonporous polytetrafluoroethylene articles |
US2460976A (en) * | 1944-08-15 | 1949-02-08 | Falk & Company | Method of making plastic polystyrene |
US2591754A (en) * | 1945-05-21 | 1952-04-08 | Auto Lite Battery Corp | Battery separator |
US2474801A (en) * | 1945-09-15 | 1949-06-28 | Latex Fiber Ind Inc | Fibrous sheets formed from an aqueous suspension of a mixture of fibers and butadiene-styrene copolymer |
US2650163A (en) * | 1947-05-21 | 1953-08-25 | Hercules Powder Co Ltd | Butadiene-styrene sized paper and method |
US2586092A (en) * | 1947-10-22 | 1952-02-19 | Reichhold Chemicals Inc | Emulsion copolymerization of styrene with bodied oil or bodied oil modified alkyd |
US2688774A (en) * | 1951-04-25 | 1954-09-14 | Monsanto Chemicals | Process for molding polystyrenes |
US2789903A (en) * | 1954-09-02 | 1957-04-23 | Celanese Corp | Process for production of shaped articles comprising fibrous particles and a copolymer of vinyl acetate and an ethylenically unsaturated acid |
US2877498A (en) * | 1954-10-18 | 1959-03-17 | Caspar C Schneider | Process for the manufacture of hollow articles from resin impregnated cellulosic materials |
US3203851A (en) * | 1958-06-18 | 1965-08-31 | Vinypal S A | Method of producing highly filled compressed masses of fiber-like filler material and thermoplastic synthetic material and compressed bodies made of such compressed masses, particularly plates and laminations |
US3879324A (en) * | 1968-04-29 | 1975-04-22 | Robert D Timmons | Solvent-free, aqueous resin dispersion |
US3919141A (en) * | 1974-07-12 | 1975-11-11 | Schenectady Chemical | Asbestos substitute |
Also Published As
Publication number | Publication date |
---|---|
DE605903C (en) | 1934-11-20 |
GB372217A (en) | 1932-05-05 |
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