Patent US3852097A successfully refreshed from Google Patents.
US3852097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating surfaces
Assignee: Dow Silicones UK Ltd
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Filing: 1973-02-08
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Granted: 1974-12-03
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Expires: 1993-02-08
Abstract
Abstract A process for treating the surface of a solid organic polymer to provide e.g. durable water repellency, lubricant or release properties. The organic polymer is first coated with an organosiloxane containing azidoformate substituents and the applied coating is then exposed to high energy radiation, ultraviolet light or a temperature in excess of 80*C.
Inventors
- 👤 S Westall
- 👤 W Owen
- 👤 B Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:56
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/12; B05D5/00; B05D5/08; C; C08; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/26; C08G77/28; C08G77/38; C08G77/382; C08G77/388; C08J; C08J7/00; C08J7/04; C08J7/0427; C09; C09D; C09D183/00; C09D183/04; C09D183/08; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D06M15/6433; D06M15/6436; C08J2483/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
62 words
A PROCESS FOR TREATING A SURFACE OF A SOLID ORGANIC POLYMER CONTAINING LESS THAN 12 PER CENT BY WEIGHT OF HYDROXYL RADICALS AND HAVING AT LEAST CHEMICAL LINKAGE SELECTED FROM CARBON TO HYDROGEN BONDS AND OLEFINCIALLY-UNSATURATED LINKAGES, SAID PROCESS COMPRISING (1) APPLYING TO SID SURFACE A COATING OF AN ORGANOSILOXANE HAVING IN THE MOECULE AT LEAST ONE UNIT OF THE GENERAL FORMULA
Claim 2
Dependent Claim
62 words
A PROCESS FOR TREATING A SURFACE OF A SOLID ORGANIC POLYMER CONTAINING LESS THAN 12 PER CENT BY WEIGHT OF HYDROXYL RADICALS AND HAVING AT LEAST CHEMICAL LINKAGE SELECTED FROM CARBON TO HYDROGEN BONDS AND OLEFINCIALLY-UNSATURATED LINKAGES, SAID PROCESS COMPRISING (1) APPLYING TO SID SURFACE A COATING OF AN ORGANOSILOXANE HAVING IN THE MOECULE AT LEAST ONE UNIT OF THE GENERAL FORMULA
Claim 3
Dependent Claim
21 words
A process as claimed in claim 1 wherein the organo-siloxane has a molecular weight within the range from 1,000 to 1,000,000.
Claim 4
Dependent Claim
26 words
A process as claimed in claim 1 wherein at least 50 per cent of the total R and R'' substituents in the organosiloxane are methyl radicals.
Claim 5
Dependent Claim
32 words
A process as claimed in claim 1 wherein the organosiloxane comprises from 5 to 20 mol per cent of units (A) and from 95 to 80 mol per cent of units (B).
Claim 6
Dependent Claim
15 words
A process as claimed in claim 1 wherein R'' represents the -(CH2)3- or -CH2CHCH3- radicals.
Claim 7
Dependent Claim
16 words
A process as claimed in claim 1 wherein the solid organic polymer is a hydrocarbon polymer.
Claim 8
Dependent Claim
21 words
A process as claimed in claim 1 wherein the applied organosiloxane is exposed to a temperature of from 120 to 180*C.
Claim 9
Dependent Claim
24 words
The process of claim 1 in which R'' also contains oxygen or sulphur, any oxygen being present in the form of ether linkages, in
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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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |