Patent US4259460A successfully refreshed from Google Patents.
US4259460A
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US
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Rubbery compositions
Assignee: Polysar Ltd
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Filing: 1979-12-05
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Granted: 1981-03-31
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Expires: 1999-12-05
Abstract
Abstract Improved rubbery compositions comprise vinyl chloride polymers, butadiene-acrylonitrile polymers and butadiene-styrene-tertiary amine polymers. Such compositions may be compounded and vulcanized and the vulcanizates may be used in hoses, rolls and gaskets.
Inventors
- 👤 Herbert F. Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:15
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/02; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L9/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
97 words
An improved rubbery composition which comprises, per 100 parts by weight of polymers, from about 15 to about 50 parts by weight of a vinyl chloride polymer, from about 10 to about 50 parts by weight of a butadiene-acrylonitrile polymer and from about 20 to about 60 parts by weight of a butadiene-styrene-tertiary amine polymer which contains from about 0.5 to about 10 millimoles of bound tertiary amine groups per 100 grams of polymer and which tertiary amine groups have been reacted with a dihalogen compound capable of forming quaternary ammonium salts with said tertiary amine groups.
Claim 2
Dependent Claim
97 words
An improved rubbery composition which comprises, per 100 parts by weight of polymers, from about 15 to about 50 parts by weight of a vinyl chloride polymer, from about 10 to about 50 parts by weight of a butadiene-acrylonitrile polymer and from about 20 to about 60 parts by weight of a butadiene-styrene-tertiary amine polymer which contains from about 0.5 to about 10 millimoles of bound tertiary amine groups per 100 grams of polymer and which tertiary amine groups have been reacted with a dihalogen compound capable of forming quaternary ammonium salts with said tertiary amine groups.
Claim 3
Dependent Claim
39 words
The composition of claim 1 wherein said butadiene-styrene-tertiary amine polymer contains an acrylate or methacrylate of the general formula ##STR2## wherein R represents hydrogen or methyl and X represents an aliphatic hydrocarbon group of 2 to 4 carbon atoms.
Claim 4
Dependent Claim
36 words
The composition of claim 2 wherein said butadiene-acrylonitrile polymer contains from about 50 to about 85 weight percent of butadiene and said butadiene-styrene-tertiary amine polymer contains from about 70 to about 85 weight percent of butadiene.
Claim 5
Dependent Claim
37 words
The composition of claim 2 wherein said dihalogen compound is selected from di-bromobutene-2, α,α'-dibromo-p-xylene, 4,4'-bis(chloromethyl) phenyl ether, 4,4'-bis(bromomethyl) phenyl ether, 4,4'-bis(chloromethyl) diphenyl methane, 4,4'-bis(chloromethyl) diphenyl, 4,4'-bis(bromomethyl) diphenyl, 4,4'-bis(bromoacetyl) diphenyl methane, 4,4'-bis (bromoacetyl) diphenyl ether and 4,4'-bis(bromoacetyl) diphenyl.
Claim 6
Dependent Claim
19 words
The composition of claim 1 wherein said butadiene-acrylonitrile polymer is a butadiene-acrylonitrile polymer containing bound hydroxy or epoxy groups.
Claim 7
Dependent Claim
27 words
The composition of claim 5 wherein said polymer contains from about 4 to about 60 millimoles of bound hydroxy or epoxy groups per 100 grams of polymer.
Claim 8
Dependent Claim
77 words
The composition of claim 5 wherein said polymer contains from about 50 to about 85 weight percent of butadiene and from about 4 to about 60 millimoles of bound hydroxy or epoxy groups per 100 grams of polymer, said hydroxy or epoxy groups being provided by a copolymerizable monomer selected from glycidyl acrylate or methacrylate, vinyl cyclohexene monoxide, allyl or methallyl glycidyl ether, hydroxyethyl acrylate or methacrylate, hydroxypropyl crotonate, di(2-hydroxyethyl) maleate or fumarate and hydroxyethyl vinyl ether.
Claim 9
Dependent Claim
21 words
The composition of claim 7 wherein the butadiene-styrene-tertiary amine polymer contains from about 70 to about 85 weight percent of butadiene.
Claim 10
Dependent Claim
70 words
A process for producing the composition of claim 1 wherein the polymers are mixed on a mill or in an internal mixer which has been preheated to between 90° and 120° C., the temperature during said mixing being allowed to increase to between 150° and 175° C. after which the mixing is continued for a further 2 to 4 minutes at a temperature controlled at about 155° to 165° C.
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) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |