US4945132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosslinked polymer interdispersions, related compositions and method of making same
Assignee: Individual
•
Filing: 1988-04-18
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Granted: 1990-07-31
•
Expires: 2008-04-18
Abstract
Abstract Polyblend interdispersions of two or more different polymers formed at least partially in the presence of an interdispersing aid which can be polytetrafluoroethylene or ultra high molecular weight polyethylene; said blend can be chemically cross-linked with peroxides.
Inventors
- 👤 Edward V. Wilkus
- 👤 Alexander F. Wu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:01
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C08; C08L; C08L101/00; C08L21/00; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0807; C08L23/0815; C08L23/10; C08L23/16; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L59/00; C08L67/00; C08L7/00; C08L11/00; C08L2205/00; C08L2205/02; C08L2205/025; C08L2205/03; C08L2205/035; C08L23/26; C08L23/28; C08L23/286; C08L2312/00; C08L27/12; C08L27/18; C08L51/00; C08L51/06; C08L53/00; C08L53/02; C08L69/00; C08L77/00; C08L83/00; C08L83/04; C08L9/00; C08L9/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
A composition of matter comprising a chemically crosslinkable interdispersion of a first polymer and a second polymer, said interdispersion (i) being at least partially formed with at least one polytetrafluoroethylene interdispersing agent and (ii) containing a peroxide crosslinking agent; wherein the first polymer is selected from the group consisting of: low density polyethylene, high density polyethylene, linear low density polyethylene, ethylene/propylene copolymer, polypropylene ethylene/propylene/diene terpolymer, ethylene/vinyl acetate copolymer, ethylene/ethyl acrylate copolymer, chlorinated polyethylene, and chlorosulfonated polyethylene; the second polymer is selected from the group consisting of: polyvinyl chloride, styrene/butadiene rubber, polychloroprene, polymethyl methacrylate, and polypropylene; and, in each interdispersion, the first polymer is different from the second polymer.
Claim 2
Dependent Claim
108 words
A composition of matter comprising a chemically crosslinkable interdispersion of a first polymer and a second polymer, said interdispersion (i) being at least partially formed with at least one polytetrafluoroethylene interdispersing agent and (ii) containing a peroxide crosslinking agent; wherein the first polymer is selected from the group consisting of: low density polyethylene, high density polyethylene, linear low density polyethylene, ethylene/propylene copolymer, polypropylene ethylene/propylene/diene terpolymer, ethylene/vinyl acetate copolymer, ethylene/ethyl acrylate copolymer, chlorinated polyethylene, and chlorosulfonated polyethylene; the second polymer is selected from the group consisting of: polyvinyl chloride, styrene/butadiene rubber, polychloroprene, polymethyl methacrylate, and polypropylene; and, in each interdispersion, the first polymer is different from the second polymer.
Claim 3
Dependent Claim
15 words
The composition defined in claim 1 wherein the first polymer is an ethylene/vinyl acetate copolymer.
Claim 4
Dependent Claim
15 words
The composition defined in claim 1 wherein the first polymer is an ethylene/ethyl acrylate copolymer.
Claim 5
Dependent Claim
13 words
The copolymer defined in claim 1 wherein the second polymer is polyvinyl chloride.
Claim 6
Dependent Claim
14 words
The composition defined in claim 1 wherein the second polymer is a styrene/butadiene rubber.
Claim 7
Dependent Claim
12 words
The composition defined in claim 1 wherein the second polymer is polypropylene.
Claim 8
Dependent Claim
13 words
The composition defined in claim 1 wherein the second polymer is a polychloroprene.
Claim 9
Dependent Claim
14 words
The composition defined in claim 1 wherein the second polymer is a polymethyl methacrylate.
Claim 10
Dependent Claim
10 words
The composition defined in claim 1 in a crosslinked state.
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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) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |