US4778856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of polyvinyl chloride, chlorinated or chlorosulfonated polyethylene and ethylene-containing terpolymer
Assignee: EIDP Inc
•
Filing: 1987-05-26
•
Granted: 1988-10-18
•
Expires: 2007-05-26
Abstract
Abstract A polymer composition comprising (a) 35-65 parts by weight polyvinyl chloride, (b) 10-55 parts by weight chlorinated polyethylene or chlorosulfonated polyethylene elastomer or mixtures thereof containing 24-40 weight percent chlorine, (c) 10-55 parts by weight of a chlorinated polyethylene or chlorosulfonated polyethylene elastomer or mixtures thereof containing 40-52 weight percent chlorine with the proviso that the chlorine level of the elastomers (b) and (c) differ by at least 5 weight percent, and (d) 1-30 parts by weight per 100 parts by weight of total chlorinated polymers (a), (b) and (c) of an ethylene terpolymer containing 48-74 weight percent ethylene, 20-40 weight percent vinyl acetate or alkyl acrylate wherein the alkyl group contains 1-10 carbon atoms, and 6-14 weight percent carbon monoxide. Such compositions are useful as pond liners, roofing membranes, wire and cable covering, and window profiles.
Inventors
- 👤 John C. Chen
- 👤 Richard T. Chou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:26
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/26; C08L23/28; C08L23/286; C08L23/32; C08L23/34; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L73/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
165 words
A polymer composition comprising (a) 35-65 parts by weight polyvinyl chloride, (b) 10-55 parts by weight of a chlorinated elastomer selected from the group consisting of a chlorinated polyethylene elastomer or a chlorosulfonated polyethylene elastomer or mixtures thereof wherein the total amount of chlorine substituted on the chlorinated elastomer is from 24-40 weight percent, (c) 10-55 parts by weight of a chlorinated elastomer selected from the group consisting of a chlorinated polyethylene elastomer or a chlorosulfonated polyethylene elastomer or mixtures thereof wherein the total amount of chlorine substituted on the elastomer is from 40-52 weight percent, with the proviso that the chlorine level in elastomers (b) and (c) differ by at least 5 weight percent, and (d) 1-30 parts by weight per 100 parts by weight of total chlorinated polymers (a), (b) and (c) of an ethylene terpolymer containing 48-74 weight percent ethylene, 20-40 weight percent vinyl acetate or alkyl acrylate wherein the alkyl group contains 1-10 carbon atoms, and 6-14 weight percent carbon monoxide.
Claim 2
Dependent Claim
165 words
A polymer composition comprising (a) 35-65 parts by weight polyvinyl chloride, (b) 10-55 parts by weight of a chlorinated elastomer selected from the group consisting of a chlorinated polyethylene elastomer or a chlorosulfonated polyethylene elastomer or mixtures thereof wherein the total amount of chlorine substituted on the chlorinated elastomer is from 24-40 weight percent, (c) 10-55 parts by weight of a chlorinated elastomer selected from the group consisting of a chlorinated polyethylene elastomer or a chlorosulfonated polyethylene elastomer or mixtures thereof wherein the total amount of chlorine substituted on the elastomer is from 40-52 weight percent, with the proviso that the chlorine level in elastomers (b) and (c) differ by at least 5 weight percent, and (d) 1-30 parts by weight per 100 parts by weight of total chlorinated polymers (a), (b) and (c) of an ethylene terpolymer containing 48-74 weight percent ethylene, 20-40 weight percent vinyl acetate or alkyl acrylate wherein the alkyl group contains 1-10 carbon atoms, and 6-14 weight percent carbon monoxide.
Claim 3
Dependent Claim
14 words
A polymer composition of claim 1 wherein elastomer (b) contains 29-36 weight percent chlorine.
Claim 4
Dependent Claim
14 words
A polymer composition of claim 1 wherein elastomer (c) contains 42-47 weight percent chlorine.
Claim 5
Dependent Claim
22 words
A polymer composition of claim 1 wherein the chlorine content of elastomers (b) and (c) differ by at least 7 weight percent.
Claim 6
Dependent Claim
14 words
A polymer composition of claim 1 wherein the ethylene terpolymer is ethylene/vinyl acetate/carbon monoxide.
Claim 7
Dependent Claim
16 words
A polymer composition of claim 1 wherein the ethylene terpolymer is an ethylene/alkyl acrylate/carbon monoxide terpolymer.
Claim 8
Dependent Claim
14 words
A polymer composition of claim 6 wherein the ethylene terpolymer is ethylene/n-butyl acrylate/carbon monoxide.
Claim 9
Dependent Claim
15 words
A polymer composition of claim 1 wherein chlorinated elastomers (b) and (c) are chlorosulfonated polyethylene.
Claim 10
Dependent Claim
15 words
A polymer composition of claim 1 wherein chlorinated elastomers (b) and (c) are chlorinated polyethylene.
Claim 11
Dependent Claim
22 words
A polymer composition of claim 1 wherein the one chlorinated elastomer is chlorosulfonated polyethylene and the other chlorinated elastomer is chlorinated polyethylene.
Claim 12
Dependent Claim
33 words
A polymer composition of claim 1 wherein the ethylene terpolymer is present in an amount of 5-25 parts by weight per 100 parts by weight of total chlorinated polymers (a), (b) and (c).
Claim 13
Dependent Claim
17 words
A polymer composition of claim 11 wherein the ethylene terpolymer is ethylene/n-butyl acrylate or vinyl acetate/carbon monoxide.
Claim 14
Dependent Claim
17 words
A polymer composition of claim 1 containing 12-35 parts by weight of chlorinated elastomers (b) and (c).
Claim 15
Dependent Claim
29 words
A polymer composition of claim 1 wherein the ethylene terpolymer contains 55-65 weight percent ethylene, 25-35 weight percent alkyl acrylate or vinyl acetate and 8-12 weight percent carbon monoxide.
References Cited (Backward Citations)
US3845166A
Cited
US4280940A
Cited
US4489193A
Cited
US4556694A
Cited
EP0180963A2
Cited
US4677163A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |