US3719632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room temperature curable organopolysiloxanes
Assignee: Wacker Chemical Corp
•
Filing: 1970-12-30
•
Granted: 1973-03-06
•
Expires: 1990-12-30
Abstract
Abstract The invention relates to siloxane cross-linking agents and to curable one-component organopolysiloxanes obtained from the reaction of the siloxane cross-linking agents and a hydroxylterminated organopolysiloxane to form a composition which is curable in ambient moisture.
Inventors
- 👤 G Lengnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:29
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/08; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0876; C07F7/0892; C08G; C08G77/00; C08G77/04; C08G77/20; C08G77/22; C08G77/24; C08G77/26; C08G77/30; C08G77/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A composition stable under anhydrous conditions which is curable to a solid, elastomeric state when exposed to atmospheric moisture having the formula: wherein Q is a radical of the formula: R and R'' are selected from the group consisting of alkyl radicals having from one to 18 carbon atoms, aryl radicals, alkaryl radicals, aralkyl radicals, alkenyl radicals, haloaryl radicals and cyanoalkyl radicals; Z is a hydrolyzable group selected from the class consisting of aminooxy radicals, oximo radicals and phosphato radicals; m is a number greater than 1 and up to 3 and x is an integer of from 0 to 20,000.
Claim 2
Dependent Claim
101 words
A composition stable under anhydrous conditions which is curable to a solid, elastomeric state when exposed to atmospheric moisture having the formula: wherein Q is a radical of the formula: R and R'' are selected from the group consisting of alkyl radicals having from one to 18 carbon atoms, aryl radicals, alkaryl radicals, aralkyl radicals, alkenyl radicals, haloaryl radicals and cyanoalkyl radicals; Z is a hydrolyzable group selected from the class consisting of aminooxy radicals, oximo radicals and phosphato radicals; m is a number greater than 1 and up to 3 and x is an integer of from 0 to 20,000.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein Z is an oximo radical.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein Z is an aminooxy radical.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |