Patent US1756862A successfully refreshed from Google Patents.
Patent US4634562A successfully refreshed from Google Patents.
US4634562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocurable polyvinyl chloride composition
Assignee: Geon Co
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Filing: 1981-09-08
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Granted: 1987-01-06
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Expires: 2001-09-08
Abstract
Abstract A shapable and photogellable liquid or fluid polyvinyl chloride composition comprising a blend of polyvinyl chloride with sufficient plasticizer and about 13 to 50 parts per hundred of a photopolymerizable polymer to give a liquid or fluid composition. Preferably said composition may contain a photoinitiator and a polyvinyl chloride stabilizer.
Inventors
- 👤 Raymond E. Downey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:26
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
41 words
A polyvinyl chloride composition composed of 100 parts polyvinyl chloride, at least sufficient plasticizer to form a plastisol with said polyvinyl chloride, stabilizer amounts of a polyvinyl chloride stabilizer, about 13 to 50 parts of a photopolymerizable polymer and a photoinitiator.
Claim 2
Dependent Claim
41 words
A polyvinyl chloride composition composed of 100 parts polyvinyl chloride, at least sufficient plasticizer to form a plastisol with said polyvinyl chloride, stabilizer amounts of a polyvinyl chloride stabilizer, about 13 to 50 parts of a photopolymerizable polymer and a photoinitiator.
Claim 3
Dependent Claim
36 words
The polyvinyl chloride composition of claim 1 wherein the plasticizer is present in 15 to 20 percent by weight and the photopolymerizable polymer is present in 30 to 40 percent by weight based on polyvinyl chloride.
Claim 4
Independent Claim
84 words
A method of forming shaped articles from a liquid polyvinyl chloride composition comprising (a) forming a liquid polyvinyl chloride composition composed of polyvinyl chloride, at least sufficient plasticizer to yield a plastisol with the polyvinyl chloride, a photopolymerizable polymer and photoinitiator, (b) spreading said liquid composition against a shaping surface, (c) exposing said spread liquid composition to sufficient actinic light to give a gelled composition, (d) curing the gelled composition in a heat zone, and (e) removing said shaped article from the heat zone.
Claim 5
Independent Claim
84 words
A method of forming shaped articles from a liquid polyvinyl chloride composition comprising (a) forming a liquid polyvinyl chloride composition composed of polyvinyl chloride, at least sufficient plasticizer to yield a plastisol with the polyvinyl chloride, a photopolymerizable polymer and photoinitiator, (b) spreading said liquid composition against a shaping surface, (c) exposing said spread liquid composition to sufficient actinic light to give a gelled composition, (d) curing the gelled composition in a heat zone, and (e) removing said shaped article from the heat zone.
Claim 6
Dependent Claim
22 words
The method of claim 3 wherein the gelled composition is removed from the shaping surface and heating to fuse the gelled composition.
Claim 7
Dependent Claim
13 words
The method of claim 3 wherein the shaping surface is a rotating mold.
Claim 8
Dependent Claim
23 words
The method of claim 5 wherein the shaping surface of the rotating mold passes ultraviolet rays to expose polymerizable polymer to said rays.
Claim 9
Dependent Claim
17 words
The method of claim 3 where the shaping surface passes X rays, gamma rays or beta rays.
Claim 10
Dependent Claim
16 words
The polyvinyl chloride composition of claim 1 wherein the photopolymerizable polymer is an ethylenically unsaturated polyurethane.
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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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |