US3684793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room temperature curing organopolysiloxanes
Assignee: Wacker Chemical Corp
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Filing: 1970-04-10
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Granted: 1972-08-15
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Expires: 1990-04-10
Abstract
Abstract The invention relates to curable organopolysiloxane compositions comprising an organopolysiloxane and a disilaorganic crosslinking agent containing functional groups which are hydrolyzable in the presence of ambient moisture.
Inventors
- 👤 Anthony Enrico Pepe
- 👤 Guenther Fritz Lengnick
- 👤 Charles George Neuroth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:43
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/14; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/20; C08G77/22; C08G77/24; C08G77/26; C08G77/30; C08G77/48; C08G77/50; C08G77/70; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
The composition of claim 1 which contains a tin salt of a carboxylic acid.
Claim 2
Dependent Claim
14 words
The composition of claim 1 wherein m and n are each equal to 2.
Claim 3
Dependent Claim
148 words
A composition curable to an elastomeric solid when exposed to atmospheric moisture at room temperature comprising an organopolysiloxane of the formula: in which R is selected from the group consisting of alkyl radicals having from one to 18 carbon atoms, aryl radicals, alkaryl radicals, aralkyl radicals, haloaryl radicals and alkenyl radicals; R'' is selected from the group consisting of hydrogen, monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and cyanoalkyl radicaLs; R'''' is selected from the class consisting of divalent hydrocarbon radicals and halogenated divalent hydrocarbon radicals having from two to 18 carbon atoms; Z is a phosphato radical; m is a number of at least 1 and up to 3; n is a number of from 0 to 3; the sum of m and n in each terminal disilaorganic group is greater than 2 and up to 6 and x is a number of from 0 to 20,000.
Claim 4
Dependent Claim
120 words
A composition curable to an elastomeric solid when exposed to atmospheric moisture at room temperature comprising an organopolysiloxane of the formula: in which R is selected from the group consisting of alkyl radicals having from one to 18 carbon atoms, aryl radicals, alkaryl radicals, aralkyl radicals, haloaryl radicals and alkenyl radicals; R'' is selected from the group consisting of hydrogen, monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and cyanoalkyl radicals; R'''' is selected from the group consisting of divalent hydrocarbon radicals and halogenated divalent hydrocarbon radicals having from two to 18 carbon atoms; Z is an aminooxy radical; each m is equal to 1; each n is equal to 3 and x is a number of from 0 to 20,000.
References Cited (Backward Citations)
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |