US4029850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive comprising post-chlorinated polyethylene and polyvinyl chloride
Assignee: Sumitomo Bakelite Co Ltd
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Filing: 1975-12-22
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Granted: 1977-06-14
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Expires: 1995-12-22
Abstract
Abstract An adhesive composition particularly suitable for adhering polyvinyl chloride and an olefinic polymer comprising 1 to 99% by weight of post-chlorinated polyethylene having a mean molecular weight of about 20,000 to 200,000, a specific gravity of 1.00 to 1.35 and a chlorine content of 5 to 50% by weight and 99 to 1% by weight of polyvinyl chloride having a mean degree of polymerization of about 300 to 2,500.
Inventors
- 👤 Ko Ishii
- 👤 Tadamasa Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:21
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/304; B32B27/32; B32B27/322; B32B37/00; B32B37/10; C; C09; C09J; C09J127/00; C09J127/02; C09J127/04; C09J127/06; B32B2439/00; B32B2439/70; B32B2439/80; C08; C08L; C08L23/00; C08L23/26; C08L23/28; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A composite material of a thermoplastic resin and an olefinic polymer, said thermoplastic resin comprising a. 2 to 50 parts by weight of post-chdlorinated polyethylene having a specific gravity of 1.00 to 1.35, a chlorine content of 5 to 50% and a mean molecular weight of from about 20,000 to 200,000, and b. 100 parts by weight of polyvinyl chloride having a mean degree of polymerization from about 300 to 2,500, and said thermoplastic resin and said olefinic polymer having a contact interface therebetween.
Claim 2
Dependent Claim
84 words
A composite material of a thermoplastic resin and an olefinic polymer, said thermoplastic resin comprising a. 2 to 50 parts by weight of post-chdlorinated polyethylene having a specific gravity of 1.00 to 1.35, a chlorine content of 5 to 50% and a mean molecular weight of from about 20,000 to 200,000, and b. 100 parts by weight of polyvinyl chloride having a mean degree of polymerization from about 300 to 2,500, and said thermoplastic resin and said olefinic polymer having a contact interface therebetween.
Claim 3
Dependent Claim
25 words
The composite material as claimed in claim 1, wherein said olefinic polymer has been extruded through an extruder and then laminated with said thermoplastic resin.
Claim 4
Dependent Claim
19 words
The composite material as claimed in claim 1, wherein said thermoplastic resin and said olefinic polymer have been co-extruded.
Claim 5
Dependent Claim
24 words
The composite material as claimed in claim 1, wherein said thermoplastic resin and said olefinic polymer have been heat sealed at the contact interface.
Claim 6
Dependent Claim
28 words
The composite material as claimed in claim 1, wherein said adhesion of the thermoplastic resin and the olefinic polymer has been conducted by means of a pressing machine.
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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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |