US3674891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-crosslinked olefinic siloxane-organic polymer graft copolymers
Assignee: Union Carbide Corp
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Filing: 1970-07-23
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Granted: 1972-07-04
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Expires: 1990-07-23
Abstract
Abstract This invention provides non-crosslinked copolymers of olefinic siloxanes grafted to one of a particular class of organic polymers (i.e. polyurethanes, polyesters, epoxy resins, polyacetals, polysulfides, polycarbonates, phenoxy resins, mineral oils, polystyrene, polyacrylates, polyvinyl chloride and polymers comprising at least one of the following types of units: -CH2-CH(OCOCH3)-, -CH2-CCl-, -CH2-CFH-, -CF2-CFCl-, -CH2-CH(CN), -CH2-CH(OR)-, -CH2-CH=CH-CCl2-, -CH2-CH=C(CH3)-CH2- and CH2CH=ClCH2- wherein R is alkyl).
Inventors
- 👤 Marshall L Wheeler Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:26
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08F; C08F8/00; C08F8/42; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
10 words
An aromatic hydrocarbon-soluble graft copolymer as claimed in claim 1.
Claim 2
Dependent Claim
72 words
A process for producing a non-crosslinked siloxane-organic graft copolymer as defined in claim 1, said process comprising forming a reaction solution containing an olefinic siloxane as defined in claim 1, an organic polymer as defined in claim 1 and an organic peroxide catalyst and maintaining the reaction solution at a temperature from 30* to 225* C. to cause the olefinic siloxane and the organic polymer to react to form the graft copolymer.
Claim 3
Dependent Claim
112 words
A process as claimed in claim 3 wherein the siloxane is a siloxane oil consisting essentially of from 2 to 98 mole percent of groups represented by the formula: wherein R is an olefinically unsaturated monovalent hydrocarbon group, R'' is a monovalent hydrocarbon group free of aliphatic unsaturation, a has a value from 1 to 3 inclusive, b has a value from 0 to 2 inclusive, and (a+b) has a value from 1 to 3 inclusive; and from 2 to 98 mole-percent of groups having the formula: wherein R'' has the above-defined meaning and c has a value from 1 to 3 inclusive, said olefinic siloxane being substantially free of SiH groups.
References Cited (Backward Citations)
GB860327A
Cited
US3573334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |