Patent US4458046A successfully refreshed from Google Patents.
US4458046A
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Thermoplastic compositions of vinyl chloride polymers and imide containing polymers
Assignee: Ethyl Corp
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Filing: 1982-07-20
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Granted: 1984-07-03
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Expires: 2002-07-20
Abstract
Abstract A thermoplastic composition made up of an intimate admixture of (a) a vinyl chloride polymer, and (b) a thermoplastic copolymer of vinyl aromatic compound and an imide derivative of an ethylenically unsaturated dicarboxylic acid. The preferred blends contain from 90 to 40 weight percent of (a) and 10 to 60 weight percent of (b).
Inventors
- 👤 Edwin D. Hornbaker
- 👤 Jesse D. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:17
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L35/00; C08L35/06
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
83 words
A thermoplastic composition which comprises in intimate admixture: (a) a vinyl chloride polymer; and (b) (i) a thermoplastic binary copolymer of a vinyl aromatic compound and an imide derivative of an ethylenically unsaturated dicarboxylic acid or (II) a thermoplastic ternary copolymer of a vinyl aromatic compound, an imide derivative of an ethylenically unsaturated dicarboxylic acid and an anyhydride derivative of an ethylenically unsaturated dicarboxylic acid; said admixture containing 90 to 40 weight percent of (a) and 10 to 60 weight percent of (b).
Claim 2
Dependent Claim
83 words
A thermoplastic composition which comprises in intimate admixture: (a) a vinyl chloride polymer; and (b) (i) a thermoplastic binary copolymer of a vinyl aromatic compound and an imide derivative of an ethylenically unsaturated dicarboxylic acid or (II) a thermoplastic ternary copolymer of a vinyl aromatic compound, an imide derivative of an ethylenically unsaturated dicarboxylic acid and an anyhydride derivative of an ethylenically unsaturated dicarboxylic acid; said admixture containing 90 to 40 weight percent of (a) and 10 to 60 weight percent of (b).
Claim 3
Dependent Claim
29 words
A composition of claim 1 wherein (b) is (i) a copolymer of a styrene monomer and maleimide or (ii) a copolymer of a styrene monomer, maleimide and maleic anhydride.
Claim 4
Dependent Claim
56 words
A composition of claim 1 wherein (b) is a styrene-maleimide copolymer containing about 95 to about 75 weight percent of styrene and about 5 to about 25 weight percent of maleimide, and from zero up to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 5
Dependent Claim
60 words
A composition of claim 1 wherein (b) is a styrene-maleimide-maleic anhydride copolymer containing about 95 to about 75 weight percent of styrene and about 5 to about 25 weight percent of maleimide and maleic anhydride, and from zero up to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 6
Dependent Claim
26 words
A composition of claim 1 wherein said admixture contains about 60 to 40 weight percent of (a) and about 40 to 60 weight percent of (b).
Claim 7
Dependent Claim
22 words
A composition of claim 1 wherein said admixture contains about 50 weight percent of (a) and about 50 weight percent of (b).
Claim 8
Dependent Claim
10 words
A composition of claim 1 wherein (a) is polyvinyl chloride.
Claim 9
Dependent Claim
40 words
A composition of claim 1 wheren (a) is polyvinyl chloride having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25° C. falling within the range of about 1.50 to about 1.85.
Claim 10
Dependent Claim
34 words
A composition of claim 1 wherein (a) is polyvinyl chloride and (b) is (i) a copolymer of a styrene monomer and maleimide or (ii) a copolymer of a styrene monomer, maleimide and maleic anhydride.
Claim 11
Dependent Claim
91 words
A composition of claim 1 wherein (a) is polyvinyl chloride having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25° C. falling within the range of about 1.50 to about 1.85 and (b) is a styrene-maleimide copolymer containing about 95 to about 75 weight percent of styrene and about 5 to about 25 weight percent of maleimide, and from zero up to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 12
Dependent Claim
95 words
A composition of claim 1 wherein (a) is polyvinyl chloride having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25° C. falling within the range of about 1.50 to about 1.85 and (b) is a styrene-maleimide-maleic anhydride copolymer containing about 95 to about 75 weight percent of styrene and about 5 to about 25 weight percent of maleimide and maleic anhydride, and from zero up to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 13
Dependent Claim
91 words
A composition of claim 1 wherein (a) is polyvinyl chloride having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25° C. falling within the range of about 1.50 to about 1.65, and (b) is a styrene-maleimide copolymer containing about 90 to about 80 weight percent of styrene and about 10 to about 20 weight percent of maleimide, and from zero up to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 14
Dependent Claim
95 words
A composition of claim 1 wherein (a) is polyvinyl chloride having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25° C. falling within the range of about 1.50 to about 1.65, and (b) is a styrene-maleimide-maleic anhydride copolymer containing about 90 to about 80 weight percent of styrene and about 10 to about 20 weight percent of maleimide and maleic anhydride, and from zero up to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 15
Dependent Claim
23 words
A composition of claim 1 wherein said admixture additionally contains at least a thermal stabilizer and an impact modifier for vinyl chloride polymers.
Claim 16
Dependent Claim
12 words
A composition of claim 14 wherein the stabilizer is a lead stabilizer.
Claim 17
Dependent Claim
16 words
A composition of claim 14 wherein the impact modifier includes an impact modifier of the MBS-type.
Claim 18
Dependent Claim
94 words
A thermoplastic composition which comprises in intimate admixture: (a) a vinyl chloride polymer; and (b) (i) a rubber-modified thermoplastic binary copolymer of a vinyl aromatic compound and an imide derivative of an ethylenically unsaturated dicarboxylic acid grafted onto a substrate rubber or (ii) a thermoplastic ternary copolymer of a vinyl aromatic compound, an imide derivative of an ethylenically unsaturated dicarboxylic acid and an anhydride derivative of an ethylenically unsaturated dicarboxylic acid grafted onto a substrate rubber; said admixture containing 90 to 25 weight percent of (a) and 10 to 75 weight percent of (b).
Claim 19
Dependent Claim
94 words
A thermoplastic composition which comprises in intimate admixture: (a) a vinyl chloride polymer; and (b) (i) a rubber-modified thermoplastic binary copolymer of a vinyl aromatic compound and an imide derivative of an ethylenically unsaturated dicarboxylic acid grafted onto a substrate rubber or (ii) a thermoplastic ternary copolymer of a vinyl aromatic compound, an imide derivative of an ethylenically unsaturated dicarboxylic acid and an anhydride derivative of an ethylenically unsaturated dicarboxylic acid grafted onto a substrate rubber; said admixture containing 90 to 25 weight percent of (a) and 10 to 75 weight percent of (b).
Claim 20
Dependent Claim
31 words
A composition of claim 17 wherein (b) is (i) a rubber-modified copolymer of a styrene monomer and maleimide or (ii) a rubber-modified copolymer of a styrene monomer, maleimide and maleic anhydride.
Claim 21
Dependent Claim
55 words
A composition of claim 17 wherein (b) is a rubber-modified styrene-maleimide copolymer containing about 95 to about 75 weight percent of styrene and about 5 to about 25 weight percent of maleimide, and up to about 35 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 22
Dependent Claim
35 words
A composition of claim 19 wherein the rubber-modified copolymer of (b) contains about 5 to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 23
Dependent Claim
59 words
A composition of claim 17 wherein (b) is a rubber-modified styrene-maleimide-maleic anhydride copolymer containing about 95 to about 75 weight percent of styrene and about 5 to about 25 weight percent of maleimide and maleic anhydride, and up to about 35 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 24
Dependent Claim
35 words
A composition of claim 21 wherein the rubber-modified copolymer of (b) contains about 5 to about 25 parts by weight of a rubber per 100 parts by weight of the resin phase of said copolymer.
Claim 25
Dependent Claim
28 words
A composition of claim 17 wherein said admixture contains about 60 to about 35 weight percent of (a) and about 40 to about 65 weight percent of (b).
Claim 26
Dependent Claim
22 words
A composition of claim 17 wherein said admixture contains about 50 weight percent of (a) and about 50 weight percent of (b).
Claim 27
Dependent Claim
11 words
A composition of claim 17 wherein (a) is a polyvinyl chloride.
Claim 28
Dependent Claim
40 words
A composition of claim 17 wherein (a) is polyvinyl chloride having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25° C. falling within the range of about 1.50 to about 1.65.
Claim 29
Dependent Claim
36 words
A composition of claim 17 wherein (a) is polyvinyl chloride and (b) is (i) a rubber-modified copolymer of a styrene monomer and maleimide or (ii) a rubber-modified copolymer of a styrene monomer, maleimide and maleic anhydride.
Claim 30
Dependent Claim
103 words
A composition of claim 17 wherein (a) is polyvinyl chloride having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25° C. falling within the range of about 1.50 to about 1.65, and (b) is (i) a rubber-modified styrene-maleimide copolymer containing about 5 to about 15 parts by weight of a rubber per 100 parts by weight of the resin phase of the copolymer of (ii) a rubber-modified styrene-maleimide-maleic anhydride copolymer containing about 5 to about 15 parts by weight of a rubber per 100 parts by weight of the resin phase of the copolymer.
Claim 31
Dependent Claim
23 words
A composition of claim 17 wherein said admixture additionally contains a least a thermal stabilizer and an impact modifier for vinyl chloride polymers.
Claim 32
Dependent Claim
12 words
A composition of claim 29 wherein the stabilizer is a lead stabilizer.
Claim 33
Dependent Claim
16 words
A composition of claim 29 wherein the impact modifier includes an impact modifier of the MBS-type.
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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) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |