Patent US3867481A successfully refreshed from Google Patents.
US3867481A
Expired / Lapsed
US
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Low molecular weight acrylic modifiers for rigid vinyl halide polymers
Assignee: Rohm and Haas Co
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Filing: 1970-06-02
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Granted: 1975-02-18
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Expires: 1990-06-02
Abstract
Abstract Improved molding compositions based on polyvinyl halides modified with acrylic polymers are provided. The polymeric modifiers have molecular weights of from 1,500 to less than 10,000 and contain residues of (A) from 75 to 100 percent by weight alkyl methacrylate and (B) from 0 to 25 percent of at least one additional ester of acrylic or methacrylic acid, styrene or substituted styrene. The molding compositions provide improved flow characteristics and processing characteristics.
Inventors
- 👤 Jong Jai Whang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:18
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L33/00; C08L33/04; C08L33/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
99 words
A POLYMERIC COMPOSITION COMPRISING FROM 70 TO 99 WEIGHT PERCENT OF A VINYL HALIDE POLYMER, WHEREIN THE VINYL HALIDE POLYMER CONTAINS A MAJOR AMOUNT OF VINYL HALIDE, AND FROM 1 TO 30 WEIGHT PERCENT OF AN ACRYLIC ADDITION POLYMER OF A. AT LEAST 75 WEIGHT PERCENT OF AT LEAST ONE MONOMER CHOSEN FROM THE GROUP CONSISTING OF LOWER ALKYL METHACRYLATES AND B. THE BALANCE COMPRISING AT LEAST ONE ADDITIONAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF ESTERS OF ACRYLIC AND METHACYLIC ACID, THE NUMBER AVERAGE MOLECULAR WEIGHT OF SAID ACRYLIC POLYMER BEING IN THE RANGE OF 2000 TO 9000.
Claim 2
Dependent Claim
99 words
A POLYMERIC COMPOSITION COMPRISING FROM 70 TO 99 WEIGHT PERCENT OF A VINYL HALIDE POLYMER, WHEREIN THE VINYL HALIDE POLYMER CONTAINS A MAJOR AMOUNT OF VINYL HALIDE, AND FROM 1 TO 30 WEIGHT PERCENT OF AN ACRYLIC ADDITION POLYMER OF A. AT LEAST 75 WEIGHT PERCENT OF AT LEAST ONE MONOMER CHOSEN FROM THE GROUP CONSISTING OF LOWER ALKYL METHACRYLATES AND B. THE BALANCE COMPRISING AT LEAST ONE ADDITIONAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF ESTERS OF ACRYLIC AND METHACYLIC ACID, THE NUMBER AVERAGE MOLECULAR WEIGHT OF SAID ACRYLIC POLYMER BEING IN THE RANGE OF 2000 TO 9000.
Claim 3
Dependent Claim
15 words
The composition of claim 1 wherein said acrylic polymer is a homopolymer of methyl methacrylate.
Claim 4
Dependent Claim
21 words
The composition of claim 1 wherein said acrylic polymer is present in an amount of from 2 to 20 weight percent.
Claim 5
Dependent Claim
21 words
The composition of claim 3 wherein said acrylic polymer is present in an amount of from 2 to 10 weight percent.
Claim 6
Dependent Claim
20 words
The composition of claim 1 wherein said component A has from 1 to 4 carbon atoms in the alkyl group.
Claim 7
Dependent Claim
31 words
The composition of claim 1 where said component B is selected from the group consisting of alkyl acrylates and methacrylates of from 1 to 15 carbon atoms in the ester group.
Claim 8
Dependent Claim
17 words
The composition of claim 1 wherein the alkyl ester group has from 1 to 4 carbon atoms.
Claim 9
Dependent Claim
33 words
The composition of claim 1 wherein said component A amounts to from 80 to 90 weight percent, and component B amounts to from 10 to 20 weight percent, based on said acrylic polymer.
Claim 10
Dependent Claim
19 words
The composition of claim 1 wherein said vinyl halide polymer is at least 50 weight percent vinyl chloride residues.
Claim 11
Dependent Claim
48 words
The composition of claim 9 where said vinyl halide polymer is a copolymer of vinyl chloride and a material selected from the group consisting of lower alkyl esters of acrylic acid, unsaturated hydrocarbons of from 2 to 6 carbon atoms, and vinyl esters of short chain carboxylic acids.
Claim 12
Dependent Claim
19 words
The compositions of claim 10 wherein said vinyl halide polymer is a copolymer of vinyl chloride and vinyl acetate.
Claim 13
Dependent Claim
16 words
The compositions of claim 1 wherein said vinyl halide polymer is a homopolymer of vinyl chloride.
Claim 14
Dependent Claim
88 words
A polymeric composition comprising from 90 to 98 weight percent of a vinyl chloride polymer, wherein the vinyl halide polymer contains a major amount of vinyl halide, and from 2 to 10 weight percent of an acrylic addition polymer of: A. 80 to 90 weight percent of an ester of methacrylic acid containing from 1 to 4 carbon atoms in the ester group, and B. from 10 to 20 weight percent of ethyL acrylate, the number average molecular weight of said acrylic polymer being from 2000 to 9000.
Claim 15
Dependent Claim
88 words
A polymeric composition comprising from 90 to 98 weight percent of a vinyl chloride polymer, wherein the vinyl halide polymer contains a major amount of vinyl halide, and from 2 to 10 weight percent of an acrylic addition polymer of: A. 80 to 90 weight percent of an ester of methacrylic acid containing from 1 to 4 carbon atoms in the ester group, and B. from 10 to 20 weight percent of ethyL acrylate, the number average molecular weight of said acrylic polymer being from 2000 to 9000.
Claim 16
Dependent Claim
44 words
The composition of claim 13 wherein said vinyl chloride polymer contains residue of from 80 to 100 weight percent vinyl chloride and from 0 to 20 weight percent of a compound selected from the group consisting of allyl acetate, vinyl acetate, and ethyl acrylate.
Claim 17
Dependent Claim
12 words
The composition of claim 13 wherein said component A is methyl methacrylate.
Claim 18
Dependent Claim
12 words
The composition of claim 13 where said component B is ethyl acrylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |