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US4048261A
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Vulcanizable compositions of a halogen-containing polymer and a diene-nitrile rubber having active halogen cure sites
Assignee: Goodrich Corp
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Filing: 1975-11-10
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Granted: 1977-09-13
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Expires: 1995-11-10
Abstract
Abstract Compositions comprised of a polymer blend of a halogen-containing polymer and a diene/nitrile rubber having active halogen cure sites are covulcanized using a common cure system. The halogen-containing polymers used in the polymer blend include the commercial polymers such as epihalohydrin polymers, polychloroprenes, fluoroelastomers, halogen-containing acrylates, and halogenated polyolefins. The curative ingredients employed are those normally used for the cure of the halogen-containing polymer employed in the polymer blend.
Inventors
- 👤 Philip Hubert Starmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:58
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/02; C08K; C08K3/00; C08K3/01; C08K3/011; C08K5/00; C08K5/0008; C08K5/0025; C08L101/00; C08L101/02; C08L101/04; C08L15/00; C08L15/02; C08L23/00; C08L23/26; C08L23/28; C08L23/283; C08L27/00; C08L27/02; C08L27/12; C08L27/16; C08L71/00; C08L71/02; C08L71/03
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
219 words
A vulcanizable composition comprising (A) a polymer blend of (1) from about 1 part to about 99 parts by weight of a diene/nitrile rubber having a halogen content of from about 0.2 percent to about 5 percent by weight based on the polymer and comprised of interpolymerized units of from 50 percent to about 98 percent by weight of a non-halogen containing conjugated diene monomer having from 4 to about 10 carbon atoms, from about 1 percent to about 49 percent by weight of a non-halogen containing monoolefinically unsaturated nitrile monomer having 3 to about 6 carbon atoms, and from about 0.5 percent to about 20 percent by weight of a halogen-containing monomer have a Q value of from about 0.1 to about 6 and selected from the group consisting of halogen-bearing vinylidene hydrocarbons, halogen-containing acrylates, and halogen-containing vinyl ketones, and (2) from about 1 part to about 99 parts by weight of a halogen-containing polymer selected from the group consisting of halogen-containing acrylate rubbers, halogen-containing diene rubbers, epihalohydrin polymers, and polyfluorocarbons, and (B) a cure system for the polymer blend consisting essentially of from about 0.1 part to about 7 parts by weight of curative ingredients for the halogen-containing polymer of (A) (2) above, all parts by weight based upon 100 parts by weight of the polymer blend.
Claim 2
Dependent Claim
219 words
A vulcanizable composition comprising (A) a polymer blend of (1) from about 1 part to about 99 parts by weight of a diene/nitrile rubber having a halogen content of from about 0.2 percent to about 5 percent by weight based on the polymer and comprised of interpolymerized units of from 50 percent to about 98 percent by weight of a non-halogen containing conjugated diene monomer having from 4 to about 10 carbon atoms, from about 1 percent to about 49 percent by weight of a non-halogen containing monoolefinically unsaturated nitrile monomer having 3 to about 6 carbon atoms, and from about 0.5 percent to about 20 percent by weight of a halogen-containing monomer have a Q value of from about 0.1 to about 6 and selected from the group consisting of halogen-bearing vinylidene hydrocarbons, halogen-containing acrylates, and halogen-containing vinyl ketones, and (2) from about 1 part to about 99 parts by weight of a halogen-containing polymer selected from the group consisting of halogen-containing acrylate rubbers, halogen-containing diene rubbers, epihalohydrin polymers, and polyfluorocarbons, and (B) a cure system for the polymer blend consisting essentially of from about 0.1 part to about 7 parts by weight of curative ingredients for the halogen-containing polymer of (A) (2) above, all parts by weight based upon 100 parts by weight of the polymer blend.
Claim 3
Dependent Claim
81 words
A composition of claim 1 wherein the diene/nitrile rubber is comprised of interpolymerized units of from 50 percent to about 98 percent by weight of a non-halogen containing conjugated diene monomer containing 4 to 6 carbon atoms, from about 15 percent to about 49 percent by weight of acrylonitrile or methacrylonitrile, and from about 1 percent to about 5 percent by weight of a halogen-containing monomer selected from the group consisting of halogen-bearing vinylidene hydrocarbons, halogen-containing acrylates, and halogen-containing vinyl ketones.
Claim 4
Dependent Claim
33 words
A composition of claim 2 wherein the halogen-containing polymer is selected from the group consisting of poly(ethyl acrylate/vinyl benzyl chloride), polyepichlorohydrin, poly(epichlorohydrin/ethylene oxide), polychloroprene, poly(vinylidene fluoride/hexafluoropropylene), chlorinated butyl rubber, and brominated butyl rubber.
Claim 5
Dependent Claim
46 words
A composition of claim 3 wherein the diene/nitrile rubber, the diene monomer is butadiene or isoprene, the vinyl nitrile monomer is acrylonitrile, and the halogen-containing monomer is a halogen-bearing vinylidene hydrocarbon selected from the group consisting of vinyl benzyl chloride, vinyl benzyl bromide, and 2-β-chloroisopropyl butadiene.
Claim 6
Dependent Claim
21 words
A composition of claim 4 wherein the diene/nitrile rubber consists of interpolymerized units of butadiene, acrylonitrile, and vinyl benzyl chloride monomers.
Claim 7
Dependent Claim
26 words
A composition of claim 5 wherein the halogen-containing polymer is poly(ethyl acrylate/vinyl benzyl chloride) and the curative ingredients are lead tetraoxide and 2-mercaptoimidazoline or hexamethylenediamine carbamate.
Claim 8
Dependent Claim
23 words
A composition of claim 5 wherein the halogen-containing polymer is polyepichlorohydrin or poly(epichlorohydrin/ethylene oxide) and the curative ingredients are lead tetraoxide and 2-mercaptoimidazoline.
Claim 9
Dependent Claim
24 words
A composition of claim 5 wherein the halogen-containing polymer is polychloroprene and the curative ingredient is magnesium oxide, zinc oxide, 2-mercaptoimidaline, or mixtures thereof.
Claim 10
Dependent Claim
22 words
A composition of claim 5 wherein the halogen-containing polymer is poly(vinylidene fluoride/hexafluoropropylene) and the curative ingredients are magnesium oxide and hexa-methylenediamine carbamate.
Claim 11
Dependent Claim
28 words
A composition of claim 5 wherein the halogen-containing polymer is chlorinated butyl rubber or brominated butyl rubber and the curative ingredients are zinc oxide, magnesium oxide, and 2-mercaptoimidazoline.
Claim 12
Dependent Claim
27 words
A composition of claim 1 wherein the halogen-containing diene rubber is selected from the group consisting of polychloroprene, poly(butadiene/chloroprene), chlorobutyl rubber, bromobutyl rubber, and brominated poly(ethylene/propylene/diene) rubber.
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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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |