US3925510A
Expired / Lapsed
US
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Vinyl chloride polymer composition
Assignee: Mitsubishi Chemical Corp
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Filing: 1974-03-21
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Granted: 1975-12-09
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Expires: 1994-03-21
Abstract
Abstract A thermoplastic vinyl chloride polymer composition superior in processing properties is provided. The composition comprises (I) polyvinyl chloride or a copolymer predominantly comprised of vinyl chloride and (II) a methyl methacrylate composite polymer characterized by the combination of 10 TO 60% OF COMPONENT A consisting essentially of, in polymerized form, 80 to 100% of methyl methacrylate, 0 to 20% of a copolymerizable monoethylenically unsaturated monomer and 0 to 2% of a copolymerizable polyfunctional monomer having at least two ethylenically unsaturated bonds, and having a reduced viscosity of at least 2.0; 40 TO 80% OF COMPONENT B consisting essentially of in polymerized form, 30 to 80% of styrene or substituted styrene and 70 to 20% of an acrylic or methacrylic acid ester, and having a reduced viscosity of not greater than 1.0; and 0 TO 40% OF COMPONENT C consisting essentially of in polymerized form, 80 to 100% of methyl methacrylate, 0 to 20% of a copolymerizable monoethylenically unsaturated monomer, and 0 to 2% of a copolymerizable polyfunctional monomer having at least two ethylenically unsaturated bonds. The methyl methacrylate composite polymer (II) is either a twoor three-stage polymer prepared by the sequential two- or threestage emulsion polymerization procedure.
Inventors
- 👤 Fumio Ide
- 👤 Kazuo Kishida
- 👤 Akira Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:09
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L51/00; C08L51/003; Y; Y10; Y10S; Y10S525/00; Y10S525/902
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
276 words
A THERMOPLASTIC VINYL CHLORIDE POLYMER COMPOSITION WHICH COMPRISES I. 80 TO 99.9 PARTS BY WEIGHT OF POLYVINYL CHLORIDE AND/OR A COPOLYMER CONTAINING NO LESS THAN 80% BY WEIGHT OF VINYL CHLORIDE AND NO GREATER THAN 20% BY WEIGHT OF AT LEAST ONE OTHER COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER, AND II. 20 TO 0.1 PARTS BY WEIGHT OF A METHYL METHACRYLATE COMPOSITE POLYMER CHARACTERIZED BY THE COMBINATION OF 10 TO 60% BY WEIGHT OF COMPONENT A CONSISTING ESSENTIALLY OF, IN POLYMERIZED FORM, 80 TO 100% BY WEIIGHT OF METHYL METHACRYLATE, 0 TO 20% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONOMER ANND 0 TO 2% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE POLYFUNCTIONAL MONOMER HAVING AT LEAST TWO ETHYLENICALLY UNSATURATED BONDS, AND HAVING A REDUCED VISCOSITY NSP/C OF AT LEAST 2.0, 40 TO 80% BY WEIGHT OF COMPONENT B CONSISTING ESSENTIALLY OF IN POLYMERIZED FORM, 30 TO 80% BY WEIGHT OF STYRENE AND 70 TO 20% BY WEIGHT OF AN ACRYLIC ACID ESTER OR A METHACRYLIC ACID ESTER, THE COMPONENT B BEING PREPARED BY POLYMERIZING MONOMERS THEREOF IN THE PRESENCE OF A PREFORMED LATEX OF THE COMPONENT A AND HAVING A REDICE VISCOSITY NSP/C OF NOT GREATER THAN 1/0, AND, 0 TO 40% BY WEIGHT OF COMPONENT C CONSISTING ESSENTIALLY OF, IN POLYMERIZED FORM, 80 TO 100% BY WEIGHT OF METHYL METHACRYLATE AND 0 TO 20% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONONER AND 0 TO 2% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE POLYFUNCTIONAL MONOMER HAVING AT LEAST TWO ETHLENICALLY UNSATURATED BONDS, THE COMPONENT C BEING PREPARED BY POLYMERIZING MONOMERS THEREOF IN THE PRESENCE OF A PREFORMED LATEX OF THE COMPONENT B.
Claim 2
Dependent Claim
276 words
A THERMOPLASTIC VINYL CHLORIDE POLYMER COMPOSITION WHICH COMPRISES I. 80 TO 99.9 PARTS BY WEIGHT OF POLYVINYL CHLORIDE AND/OR A COPOLYMER CONTAINING NO LESS THAN 80% BY WEIGHT OF VINYL CHLORIDE AND NO GREATER THAN 20% BY WEIGHT OF AT LEAST ONE OTHER COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER, AND II. 20 TO 0.1 PARTS BY WEIGHT OF A METHYL METHACRYLATE COMPOSITE POLYMER CHARACTERIZED BY THE COMBINATION OF 10 TO 60% BY WEIGHT OF COMPONENT A CONSISTING ESSENTIALLY OF, IN POLYMERIZED FORM, 80 TO 100% BY WEIIGHT OF METHYL METHACRYLATE, 0 TO 20% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONOMER ANND 0 TO 2% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE POLYFUNCTIONAL MONOMER HAVING AT LEAST TWO ETHYLENICALLY UNSATURATED BONDS, AND HAVING A REDUCED VISCOSITY NSP/C OF AT LEAST 2.0, 40 TO 80% BY WEIGHT OF COMPONENT B CONSISTING ESSENTIALLY OF IN POLYMERIZED FORM, 30 TO 80% BY WEIGHT OF STYRENE AND 70 TO 20% BY WEIGHT OF AN ACRYLIC ACID ESTER OR A METHACRYLIC ACID ESTER, THE COMPONENT B BEING PREPARED BY POLYMERIZING MONOMERS THEREOF IN THE PRESENCE OF A PREFORMED LATEX OF THE COMPONENT A AND HAVING A REDICE VISCOSITY NSP/C OF NOT GREATER THAN 1/0, AND, 0 TO 40% BY WEIGHT OF COMPONENT C CONSISTING ESSENTIALLY OF, IN POLYMERIZED FORM, 80 TO 100% BY WEIGHT OF METHYL METHACRYLATE AND 0 TO 20% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE MONOETHYLENICALLY UNSATURATED MONONER AND 0 TO 2% BY WEIGHT OF AT LEAST ONE COPOLYMERIZABLE POLYFUNCTIONAL MONOMER HAVING AT LEAST TWO ETHLENICALLY UNSATURATED BONDS, THE COMPONENT C BEING PREPARED BY POLYMERIZING MONOMERS THEREOF IN THE PRESENCE OF A PREFORMED LATEX OF THE COMPONENT B.
Claim 3
Dependent Claim
54 words
A thermoplastic vinyl chloride polymer composition according to claim 1, wherein said methyl methacrylate composite polymer is a two-stage polymer prepared by polymerizing 40 to 80% by weight of a monomer charge of the component B in the presence of 20 to 60% by weight of the component A in the form of latex.
Claim 4
Dependent Claim
88 words
A thermoplastic vinyl chloride polymer composition according to claim 1, wherein said methyl methacrylate composite polymer is a three-stage polymer prepared by polymerizing 40 to 70% by weight of a monomer charge of the comoponent B in the presence of 10 to 45% by weight of the component A in the form of latex, and then polymerizing 5 to 40% by weight of a monomer charge of the component C in the presence of 40 to 70% by weight of the component B in the form of latex.
Claim 5
Dependent Claim
38 words
A thermoplastic vinyl chloride polymer composition according to claim 3, wherein the amount of the monomer charge of the component C is 10 to 30% by weight based on the weight of the methyl methacrylate composite polymer (II).
Claim 6
Dependent Claim
34 words
A thermoplastic vinyl chloride polymer composition according to claim 1, wherein said component A has a reduced viscosity of 2 to 15 and said component B has a reduced viscosity of 0.2 to 0.8.
Claim 7
Dependent Claim
62 words
A thermoplastic vinyl chloride polymer composition according to claim 1, wherein no greater than 5% by weight of at least one anionic surface active agent, based on the weight of the methyl methacrylate composite polymer, is added to the latex of the methyl methacrylate composite polymer prior to, simultaneously with or after the addition of a coagulating agent to the polymer latex.
Claim 8
Dependent Claim
50 words
A thermoplastic vinyl chloride polymer composition according to claim 6, wherein coagulated particles of said methyl methacrylate composite polymer treated with saiD anionic surface active agent have, before being dried, a size that at least 95% by weight of the particles fall within the range of 20 to 300 microns.
Claim 9
Dependent Claim
66 words
A thermoplastic vinyl chloride polymer composition according to claim 1, wherein said acrylic acid ester or said methacrylic acid ester, contained in polymerized form in component B, is at least one compound selected from alkyl acrylates and alkyl methacrylates, the alkyl group having 1 to 12 carbon atoms, and substituted alkyl acrylates and substituted alkyl methacrylates, the substituted alkyl group having 1 to 12 carbon atoms.
Claim 10
Dependent Claim
62 words
A thermoplastic vinyl chloride polymer composition according to claim 1, wherein said copolymerizable monoethylenically unsaturated monomer contained in polymerized form in components A and C is at least one compound selected from aromatic vinyl compounds, unsaturated nitriles, vinyl esters, alkyl acrylates, the alkyl group having 1 to 12 carbon atoms, and alkyl methacrylates, the alkyl group having 2 to 12 carbon atoms.
Claim 11
Dependent Claim
66 words
A thermoplastic vinyl chloride polymer composition according to claim 1, wherein said copolymerizable polyfunctional monomer having at least two ethylenically unsaturated bonds contained, in polymerized form, in the component A and C is at least one selected from ethylene glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, triethylene glycol diacrylate, triethylene glycol dimethacrylate, tetraethylene glycol diacrylate, tetraethlene glycol dimethacrylate, divinylbenzene and triallyl cyanurate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |