US4238393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additives for coating compositions
Assignee: Shin-Etsu Chemical Co Ltd
•
Filing: 1976-09-27
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Granted: 1980-12-09
•
Expires: 1996-09-27
Abstract
Abstract The additives for coating compositions comprise as an essential component an organopolysiloxane having in the molecule at least one siloxane unit to which one or more mercapto-substituted hydrocarbon groups are bonded. The additives serve to impart blocking resistance to surfaces.
Inventors
- 👤 Minoru Takamizawa
- 👤 Yoshio Inoue
- 👤 Hiroshi Yoshioka
- 👤 Masaki Moteki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:12
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; C09D183/08; C09D131/00; C09D131/06; C09D131/08; C09D4/00; C09D4/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
In a paint, lacquer, or varnish composition which contains an organopolysiloxane, the improvement which comprises said organopolysiloxane being present in an anti-blocking effective amount within the range from about 0.05% to 15% by weight based on the solids in the composition and having the formula ##EQU4## where R 1 is a divalent hydrocarbon group having from 1 to 12 carbon atoms; R 2 is a substituted or unsubstituted monovalent hydrocarbon group other than the mercapto-substituted hydrocarbon groups; R 3 has the same definition as R 2 ; Y is a hydroxy group or a hydrolyzable group; a is 1, 2 or 3; b is 0, 1 or 2; c is 0, 1 or 2, with the proviso that (a+b+c) is 1, 2, or 3; d is 0, 1, 2 or 3; m is a positive number; and n is 0 or a positive number.
Claim 2
Dependent Claim
144 words
In a paint, lacquer, or varnish composition which contains an organopolysiloxane, the improvement which comprises said organopolysiloxane being present in an anti-blocking effective amount within the range from about 0.05% to 15% by weight based on the solids in the composition and having the formula ##EQU4## where R 1 is a divalent hydrocarbon group having from 1 to 12 carbon atoms; R 2 is a substituted or unsubstituted monovalent hydrocarbon group other than the mercapto-substituted hydrocarbon groups; R 3 has the same definition as R 2 ; Y is a hydroxy group or a hydrolyzable group; a is 1, 2 or 3; b is 0, 1 or 2; c is 0, 1 or 2, with the proviso that (a+b+c) is 1, 2, or 3; d is 0, 1, 2 or 3; m is a positive number; and n is 0 or a positive number.
Claim 3
Dependent Claim
31 words
The coating composition as claimed in claim 1 wherein said divalent hydrocarbon group R 1 is selected from the group consisting of alkylene groups, divalent alicyclic hydrocarbon groups and arylene groups.
Claim 4
Dependent Claim
18 words
The composition as claimed in claim 1 wherein said divalent hydrocarbon group R 1 is ethylene or propylene.
Claim 5
Dependent Claim
33 words
The coating composition as claimed in claim 1 wherein said monovalent hydrocarbon group R 2 is selected from the group consisting of alkyl groups, alkenyl groups, cycloalkyl groups, aryl groups and aralkyl groups.
Claim 6
Dependent Claim
19 words
The coating composition as claimed in claim 1 wherein said monovalent hydrocarbon group R 2 is a methyl group.
Claim 7
Dependent Claim
31 words
The coating composition as claimed in claim 1 wherein said hydrolyzable group Y is selected from the group consisting of amino groups, aminoxy groups, alkoxy groups, ketoxime groups and acyloxy groups.
Claim 8
Dependent Claim
15 words
The coating composition as claimed in claim 1 wherein said organopolysiloxane is dispersed in water.
Claim 9
Dependent Claim
17 words
The coating composition as claimed in claim 1 wherein said organopolysiloxane is dissolved in an organic solvent.
Claim 10
Dependent Claim
9 words
An article coated with the composition of claim 1.
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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) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |