US4146511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin compositions for peel-off coatings comprising a film-forming polymeric resin, an organo polysiloxane and a solvent
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1977-11-23
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Granted: 1979-03-27
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Expires: 1997-11-23
Abstract
Abstract The resin compositions for peel-off coatings comprise a certain film-forming polymeric resin, an organopolysiloxane having a polyoxyalkylene group as the side chain, and a solvent. The coating compositions applied to the surfaces of various shaped articles provide protective films thereon, and the films thus formed are tough and can exhibit an excellent peelability even after the lapse of a long period of time or after heating. The coating resin compositions are prepared by a method comprising heating the mixture of the above-named individual components at an elevated temperature, not at room temperature.
Inventors
- 👤 Iwao Moriya
- 👤 Toru Sema
- 👤 Sigeyosi Hatasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:41
CPC Classifications
C; C09; C09D; C09D101/00; C09D101/08; C09D157/00; C09D5/00; C09D5/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A resin composition for a peel-off coatings comprising (a) 100 parts by weight of at least one film-forming resin selected from the group consisting of polyvinyl chloride resins, polyvinyl acetate resins, vinyl chloride-vinyl acetate copolymeric resins, acrylic resins, polyvinyl alcohols, polyethylenes, methyl cellulose, ethyl cellulose, nitrocellulose, acetyl cellulose, acetylbutyl cellulose, and natural rubber, (b) from 0.1 to 40 parts by weight of at least one organopolysiloxane represented by the general formula ##STR13## where R is a substituted or unsubstituted monovalent hydrocarbon group, R 1 is a hydrogen atom or a monovalent hydrocarbon group, a has a value from zero to 150 inclusive, b has a value from 2 to 50 inclusive, c has a value from zero to 5 inclusive, x has a value from 2 to 40 inclusive and y has a value from zero to 40 inclusive, and (c) a solvent.
Claim 2
Dependent Claim
143 words
A resin composition for a peel-off coatings comprising (a) 100 parts by weight of at least one film-forming resin selected from the group consisting of polyvinyl chloride resins, polyvinyl acetate resins, vinyl chloride-vinyl acetate copolymeric resins, acrylic resins, polyvinyl alcohols, polyethylenes, methyl cellulose, ethyl cellulose, nitrocellulose, acetyl cellulose, acetylbutyl cellulose, and natural rubber, (b) from 0.1 to 40 parts by weight of at least one organopolysiloxane represented by the general formula ##STR13## where R is a substituted or unsubstituted monovalent hydrocarbon group, R 1 is a hydrogen atom or a monovalent hydrocarbon group, a has a value from zero to 150 inclusive, b has a value from 2 to 50 inclusive, c has a value from zero to 5 inclusive, x has a value from 2 to 40 inclusive and y has a value from zero to 40 inclusive, and (c) a solvent.
Claim 3
Dependent Claim
41 words
The resin composition for peel-off coatings as claimed in claim 1 wherein the substituted or unsubstituted monovalent hydrocarbon group represented by the symbol R is selected from the class consisting of alkyl, alkenyl, cycloalkyl, aryl, aralkyl, and halogen-substituted monovalent hydrocarbon groups.
Claim 4
Dependent Claim
18 words
The resin composition for peel-off coatings as claimed in claim 1 wherein R 1 is a hydrogen atom.
Claim 5
Dependent Claim
22 words
The resin composition for peel-off coatings as claimed in claim 1 wherein the value of c is from 1 to 5, inclusive.
Claim 6
Dependent Claim
35 words
The resin composition for peel-off coatings as in claim 1 wherein the amount of component (b) is in the range from 1 to 30 parts by weight per 100 parts by weight of component (a).
Claim 7
Dependent Claim
50 words
A method for the preparation of the resin composition for peel-off coatings as set forth in claim 1 which comprises the steps of blending components (a), (b) and (c) into a homogeneous mixture, and heating the mixture at a temperature between 40° C. and the boiling point of component (c).
Claim 8
Dependent Claim
17 words
The method as claimed in claim 6 wherein the heating is conducted for 1 to 6 hours.
References Cited (Backward Citations)
US3471588A
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US3305504A
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US3505377A
Cited
US3691257A
Cited
US3709956A
Cited
US3576904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |