Patent US3692865A successfully refreshed from Google Patents.
US3692865A
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Room temperature curable organopolysiloxanes and process for preparing same
Assignee: Wacker Chemical Corp
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Filing: 1970-12-30
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Granted: 1972-09-19
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Expires: 1990-12-30
Abstract
Abstract The invention relates to siloxane cross-linking agents and to curable one-component modified organopolysiloxanes obtained from the reaction of the siloxane cross-linking agents and a hydroxylterminated modified organopolysiloxane to form a composition which is curable by ambient moisture.
Inventors
- 👤 Guenther Fritz Lengick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:02
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0892; C07F7/0838; C07F7/10; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08L; C08L83/00; C08L83/10; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
178 words
A composition which is curable to a solid elastomeric state when exposed to atmospheric moisture having the formula: wherein Q is a radical of the formula: in which R and R'' are selected from the group consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and cyanoalkyl radicals; R'''' is a divalent hydrocarbon radical; R'''''' is a polymeric radical linked to R'''' by a carbon-to-carbon linkage; said polymeric radical constituted of recurring units derived from monomers containing olefinic unsaturation, said monomers being selected from the class consisting of straight chain olefins, whether or not attached to an aromatic nucleus, halogenated olefins, again whether or not attached to an aromatic nucleus, unsaturated acids esters of organic acids in which either the esterifying group or the derivative acid is unsaturated, unsaturated amides and unsaturated nitriles; Z is a hydrolyzable group selected from the class consisting of acyloxy, amino, aminooxy, oximo and phosphato radicals; each m is a number greater than 1; x is a number of from 0 to 20,000 and y is a number of from 1 to 500.
Claim 2
Dependent Claim
11 words
The composition of claim 2 wherein Z is an oximo radical.
Claim 3
Dependent Claim
11 words
The composition of claim 2 wherein Z is an aminooxy radical.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein Z is a phosphato radical.
Claim 5
Dependent Claim
11 words
The composition of claim 2 wherein Z is an amino radical.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |