Patent US4075289A successfully refreshed from Google Patents.
US4075289A
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Chlorinated, hydrogenated polybutadiene impact modifiers for PVC
Assignee: GE Chemicals Inc
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Filing: 1976-11-22
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Granted: 1978-02-21
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Expires: 1996-11-22
Abstract
Abstract High-vinyl polybutadiene, when fully hydrogenated and then photo-chlorinated to a level of 15 to 40 wt% chlorine, is an impact modifier for PVC. Blends with PVC have high impact, good flow properties and are weatherable.
Inventors
- 👤 John Carl Falk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:17
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/12; C08C19/14; C08C19/02; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L15/00; C08L15/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
A thermoplastic composition comprising a blend of from about 95 to about 80 wt% of polyvinyl chloride and correspondingly from about 5 to about 20 wt% of a chlorinated polymer, said polymer being a fully hydrogenated polymer selected from the group consisting of hydrogenated homopolymers of 1,3-butadiene having greater than 30% 1,2-polymerized units and hydrogenated copolymers thereof containing up to 60 wt% styrene, said chlorinated polymer containing from 15 to 40 wt% chlorine.
Claim 2
Dependent Claim
73 words
A thermoplastic composition comprising a blend of from about 95 to about 80 wt% of polyvinyl chloride and correspondingly from about 5 to about 20 wt% of a chlorinated polymer, said polymer being a fully hydrogenated polymer selected from the group consisting of hydrogenated homopolymers of 1,3-butadiene having greater than 30% 1,2-polymerized units and hydrogenated copolymers thereof containing up to 60 wt% styrene, said chlorinated polymer containing from 15 to 40 wt% chlorine.
Claim 3
Dependent Claim
16 words
The thermoplastic composition of claim 1 wherein the hydrogenated polymer contains greater than 60% 1,2polymerized units.
Claim 4
Dependent Claim
17 words
The thermoplastic composition of claim 2 wherein the chlorinated polymer contains from 20 to 35 wt% chlorine.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |