Patent US4689355A successfully refreshed from Google Patents.
US4689355A
Expired / Lapsed
US
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Crosslinked silane-functional vinylidene chloride polymer and films or foams therefrom
Assignee: Dow Chemical Co
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Filing: 1986-06-17
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Granted: 1987-08-25
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Expires: 2006-06-17
Abstract
Abstract A polymeric composition is provided which includes the reaction product of vinylidene chloride, an optional copolymerizable monomer, and an α,β ethylenically unsaturated silane crosslinking agent. The polymeric reaction product may also be used to form films and coating. The composition further may include a volatile blowing agent which, when activated, expands the polymeric reaction product into a low density cellular structure.
Inventors
- 👤 Warren L. Treptow
- 👤 Kun S. Hyun
- 👤 Chung P. Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:22
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08J9/14; C08J9/143; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C08J9/147; C08J9/149; C08J9/16; C08J9/18; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
24 words
An expandable polymeric composition comprising (a) a reaction product of vinylidene chloride and an α,β ethylenically unsaturated silane and (b) a volatile blowing agent.
Claim 2
Dependent Claim
24 words
An expandable polymeric composition comprising (a) a reaction product of vinylidene chloride and an α,β ethylenically unsaturated silane and (b) a volatile blowing agent.
Claim 3
Dependent Claim
44 words
The composition of claim 1 in which said reaction product includes from 1-99% by weight of a copolymerizable monmer selected from the group consisting of vinyl functional monomers, alkyl esters of acrylic and methacrylic acid, ethylenically unsaturated mono- and dicarboxylic acids, and mixtures thereof.
Claim 4
Dependent Claim
27 words
The composition of claim 1 in which said silane is present in an amount of from 0.005 to 5.0% on a mole basis in the reaction product.
Claim 5
Dependent Claim
42 words
The composition of claim 1 further including from 1-2% by weight of an additional polymer selected from the group consisting of copolymers of ethylene and vinyl acetate, copolymers of styrene and acrylonitrile, copolymers of ethylene and methyl acrylate, polyolefins, and mixtures thereof.
Claim 6
Dependent Claim
13 words
The composition of claim 3 in which said silane is γ-methacryloxypropyl trimethoxy silane.
Claim 7
Dependent Claim
21 words
The composition of claim 2 in which said vinylidene chloride comprises from 1 to 99.9% by weight of said reaction product.
Claim 8
Dependent Claim
21 words
The composition of claim 5 in which said reaction product comprises 93.87% vinylidene chloride, 6.0% methyl acrylate and 0.13% γ-methacryloxypropyl trimethoxysilane.
References Cited (Backward Citations)
US28780A
Cited
US2848427A
Cited
USRE28780E
Cited
US4016116A
Cited
US4009138A
Cited
US4042556A
Cited
US3983080A
Cited
US4291090A
Cited
US4123477A
Cited
US4211684A
Cited
US4336171A
Cited
US4434272A
Cited
US4371677A
Cited
US4550003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |