US3884860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxy-functional silicones
Assignee: Dow Silicones Corp
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Filing: 1974-04-15
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Granted: 1975-05-20
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Expires: 1994-04-15
Abstract
Abstract Organopolysiloxanes containing phenyl substituents and carboxyl groups attached to the silicon atom by a thioether linkage are useful as resin intermediates in water-reducible coating formulations.
Inventors
- 👤 Lawrence H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:58
CPC Classifications
C; C09; C09D; C09D167/00; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4246; C08G59/4269; C08G77/00; C08G77/04; C08G77/22; C08G77/28; C08G77/38; C08G77/382; C08G77/392; C08L; C08L63/00; C09D133/00; C09D133/04; C09D133/06; C09D133/08; C09D183/00; C09D183/04; C09D183/08; H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/74; C08L83/00; C08L83/04; C08L83/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
24 words
A COPOLYMERIC ORGANOPOLYSILOXANE CONSISTING ESSENTIALLY OF (A) FROM 10 TO 65 MOL PERCENT OF SILOXY UNITS SELECTED FROM THE GROUP CONSISTING OF HOOCRCH2CH2SIO3/2 AND
Claim 2
Dependent Claim
24 words
A COPOLYMERIC ORGANOPOLYSILOXANE CONSISTING ESSENTIALLY OF (A) FROM 10 TO 65 MOL PERCENT OF SILOXY UNITS SELECTED FROM THE GROUP CONSISTING OF HOOCRCH2CH2SIO3/2 AND
Claim 3
Dependent Claim
17 words
A copolymeric organopolysiloxane of claim 1 wherein at least 20 mol percent siloxy units (a) are present.
Claim 4
Dependent Claim
17 words
A copolymeric organopolysiloxane of claim 1 where in the siloxy units (a) R is a -CH2S- radical.
Claim 5
Dependent Claim
11 words
The nitrogenous base salt of the copolymeric organopolysiloxane of claim 1.
Claim 6
Dependent Claim
11 words
The salt of claim 4 wherein said nitrogenous base is triethylamine.
Claim 7
Dependent Claim
12 words
The salt of claim 4 wherein said nitrogenous base is dimethylethanol amine.
Claim 8
Dependent Claim
10 words
An aqueous coating composition comprising the salt of claim 4.
Claim 9
Dependent Claim
18 words
An aqueous coating composition in accordance with claim 7 comprising a water-dispersible oil-free polyester and a water-miscible solveNt.
References Cited (Backward Citations)
US3729444A
Cited
US3767690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |