US4937284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified polyolefin, method for making the same, and use thereof
Assignee: Neste Oyj
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Filing: 1988-08-23
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Granted: 1990-06-26
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Expires: 2008-08-23
Abstract
Abstract Modified polyolefin comprising a polyolefin linked to a hydrolyzable silane which is reactable with polyvinyl alcohol and being chemically bound to polyvinyl alcohol by the silane, and method for preparing the same.
Inventors
- 👤 Christer Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:06
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/021
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
53 words
Branched, block copolymer of a polyolefin chemically bound to polyvinyl alcohol by a hydrolyzable silane, said block copolymer comprising about 1-99% by weight of said polyolefin, and about 99-1% by weight of said polyolefin alcohol, the amount of said hydrolyzable silane bound to said polyolefin being sufficient to bind said polyvinyl alochol thereto.
Claim 2
Dependent Claim
53 words
Branched, block copolymer of a polyolefin chemically bound to polyvinyl alcohol by a hydrolyzable silane, said block copolymer comprising about 1-99% by weight of said polyolefin, and about 99-1% by weight of said polyolefin alcohol, the amount of said hydrolyzable silane bound to said polyolefin being sufficient to bind said polyvinyl alochol thereto.
Claim 3
Dependent Claim
23 words
The block copolymer of claim 1, wherein the amount of said hydrolyzable silane is between about 0.10-10% of the weight of said polyolefin.
Claim 4
Dependent Claim
13 words
The block copolymer of claim 2, wherein said silane is an unsaturated alkoxysilane.
Claim 5
Dependent Claim
16 words
The block copolymer of claim 3, wherein said silane is vinyltrimethoxysilane, vinyltriethoxysilane, vinyl-tris (betamethoxyethoxy)silane, or gammamethacryloxypropyltrimethoxysilane.
Claim 6
Dependent Claim
12 words
The block copolymer of claim 2, wherein said silane is an aminosilane.
Claim 7
Dependent Claim
12 words
The block copolymer of claim 2, wherein said silane is a chlorosilane.
Claim 8
Dependent Claim
10 words
The block copolymer claim 5, wherein said aminosilane is ρ-aminopropyltriethoxysilane.
Claim 9
Dependent Claim
11 words
The block copolymer of claim 6, wherein said chlorosilane is vinyltrichlorosilane.
Claim 10
Dependent Claim
17 words
The block copolymer of claim 2, having a melt index of less than about 0.2 g/10 min.
Claim 11
Dependent Claim
12 words
The block copolymer of claim 2, wherein said polyolefin is a copolymer.
Claim 12
Dependent Claim
17 words
The block copolymer of claim 2, wherein the polyvinyl alcohol comprises 0.5-100% by weight of vinyl alcohol.
References Cited (Backward Citations)
US4632959A
Cited
US4600748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |