US4246168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-static vinyl chloride polymers
Assignee: VISTA POLYMERS Inc A DE CRP AND WHOLLY-OWNED SUBSIDIARY OF VISTA CHEMICAL Co
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Filing: 1979-02-12
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Granted: 1981-01-20
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Expires: 1999-02-12
Abstract
Abstract This invention relates to anti-static vinyl chloride polymer compositions and a method of preparing such compositions.
Inventors
- 👤 Wayne R. Sorenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:13
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; C08K5/56; C08K5/57; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
32 words
A vinyl chloride polymer in particulate form containing an organotin stabilizer and having an external application of an anti-static amount of an anti-static agent consisting of 1,4-butanediol; 2,2-diemthyl propanediol-1,3; or mixtures thereof.
Claim 2
Dependent Claim
32 words
A vinyl chloride polymer in particulate form containing an organotin stabilizer and having an external application of an anti-static amount of an anti-static agent consisting of 1,4-butanediol; 2,2-diemthyl propanediol-1,3; or mixtures thereof.
Claim 3
Dependent Claim
22 words
The invention of claim 1 wherein the anti-static agent is present in an amount in the range of 0.01 to 0.10 phr.
Claim 4
Dependent Claim
22 words
The invention of claim 2 wherein the anti-static agent is present in an amount in the range of 0.01 to 0.05 phr.
Claim 5
Dependent Claim
30 words
The invention of claim 1 wherein the vinyl chloride polymer is polyvinyl chloride, a copolymer of vinyl chloride and vinyl acetate, or a copolymer of vinyl chloride and vinylidene chloride.
Claim 6
Dependent Claim
11 words
The invention of claim 4 wherein the anti-static agent is 1,4-butanediol.
Claim 7
Dependent Claim
11 words
The invention of claim 4 wherein the anti-static agent is 2,2-dimethylpropanediol-1,3.
References Cited (Backward Citations)
US3627718A
Cited
US3745116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |