US4579907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl chloride plastic film
Assignee: Benecke-Kaliko GmbH
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Filing: 1984-08-30
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Granted: 1986-04-01
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Expires: 2004-08-30
Abstract
Abstract A plastic film made from polyvinyl chloride homopolymers and/or copolymers that is produced with the use of olefinic unsaturated monomers is disclosed that includes a plasticizing agent and a thermoplastic rubber. The plastic film has high strength, behaves like rubber and has improved aging properties and low temperature properties. External softening is not necessary to obtain elastic properties.
Inventors
- 👤 Artur Wildenau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:11
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L21/00; C08L53/00; C08L53/02; C08L73/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
32 words
A plastic film comprising a polyvinyl chloride homopolymer or copolymer, an ethylene-vinyl acetate-carbonmonoxide terpolymer, and a thermoplastic rubber selected from the group consisting of ethylene-propylene rubbers, styrene-butadiene rubbers and styrene-rubber-styrene block polymers.
Claim 2
Dependent Claim
32 words
A plastic film comprising a polyvinyl chloride homopolymer or copolymer, an ethylene-vinyl acetate-carbonmonoxide terpolymer, and a thermoplastic rubber selected from the group consisting of ethylene-propylene rubbers, styrene-butadiene rubbers and styrene-rubber-styrene block polymers.
Claim 3
Dependent Claim
23 words
The plastic film of claim 1, wherein the thermoplastic rubber is present in an amount of about 1 to about 10% by weight.
Claim 4
Dependent Claim
18 words
The plastic film of claim 1, wherein the thermoplastic rubber is a styrene ethylene butylene styrene block polymer.
Claim 5
Dependent Claim
11 words
The platic film of claim 1, additionally comprising antioxidants and stabilizers.
Claim 6
Dependent Claim
20 words
The plastic film of claim 2, wherein the thermoplastic rubber is present in an amount of about 3% by weight.
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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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |