US4016333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation curable coatings having nonadherent surfaces
Assignee: Stamicarbon BV
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Filing: 1974-10-25
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Granted: 1977-04-05
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Expires: 1994-10-25
Abstract
Abstract Radiation polymerizable coatings having nonadherent surfaces are provided utilizing nonaqueous emulsions of a liquid alkyl hydrogen polysiloxane in a radiation polymerizable polyethylenic liquid. Polyacrylates in combination with amines, and ultraviolet photosensitizers are particularly contemplated for rapid nonair inhibited ultraviolet cure.
Inventors
- 👤 Joseph E. Gaske
- 👤 Nick T. Georgas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:15
CPC Classifications
C; C09; C09D; C09D4/00; C09D4/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
37 words
A radiation polymerizable nonaqueous emulsion adapted to deposit coatings having nonadherent surfaces comprising a radiation polymerizable polyethylenically unsaturated liquid having emulsified therein from 2-50%, based on the weight of the emulsion, of a liquid alkyl hydrogen polysiloxane.
Claim 2
Dependent Claim
37 words
A radiation polymerizable nonaqueous emulsion adapted to deposit coatings having nonadherent surfaces comprising a radiation polymerizable polyethylenically unsaturated liquid having emulsified therein from 2-50%, based on the weight of the emulsion, of a liquid alkyl hydrogen polysiloxane.
Claim 3
Dependent Claim
50 words
An emulsion as recited in claim 1 in which said polysiloxane has the formula: ##STR3## in which n is a number of 1-100, R is an alkyl group containing from 1-4 carbon atoms, and the ratio of alkyl groups to H groups is in the range of 1:10 to 10:1.
Claim 4
Dependent Claim
27 words
An emulsion as recited in claim 2 in which R is methyl and the ratio of methyl to H is in the range of 1:2 to 2:1.
Claim 5
Dependent Claim
23 words
An emulsion as recited in claim 1 in which said emulsion includes agents rendering the emulsion rapidly polymerizable on exposure to ultraviolet light.
Claim 6
Dependent Claim
21 words
An emulsion as recited in claim 4 in which said polyethylenically unsaturated liquid is a polyacrylic ester of a polyhydroxy alcohol.
Claim 7
Dependent Claim
14 words
An emulsion as recited in claim 5 in which an amine is also present.
Claim 8
Dependent Claim
31 words
An emulsion as recited in claim 5 in which said polyacrylic ester is reacted with a proportion of an amine containing amino hydrogen to provide an unsaturated Michael addition reaction product.
Claim 9
Dependent Claim
50 words
An emulsion as recited in claim 7 in which said polyacrylic ester is formed by reaction of an aliphatic polyhydric alcohol with at least two mols per mol of alcohol of acrylic acid, said polyacrylic ester being reacted with a monosecondary amine to provide an unsaturated Michael addition reaction product.
Claim 10
Dependent Claim
14 words
An emulsion as recited in claim 8 in which said amine is diethyl amine.
Claim 11
Dependent Claim
120 words
A radiation polymerizable nonaqueous emulsion adapted to deposit coatings with nonadherent surfaces comprising a liquid polyacrylic ester of a polyhydroxy alcohol containing from 2-4 acrylate groups per molecule, said liquid polacrylic ester having emulsified therein from 2-50%, based on the weight of the emulsion, of a liquid alkyl hydrogen polysiloxane having the formula: ##STR4## in which n is a number from 4-30, R is an alkyl group containing from 1-4 carbon atoms, and the ratio of alkyl groups to H groups is in the range of 1:2 to 2:1, said emulsion further including an ultraviolet light sensitizer, an emulsifier for maintaining said polysiloxane in stable emulsion, and from 0.1-20%, based on the weight of said polyacrylic ester of an amine.
Claim 12
Dependent Claim
120 words
A radiation polymerizable nonaqueous emulsion adapted to deposit coatings with nonadherent surfaces comprising a liquid polyacrylic ester of a polyhydroxy alcohol containing from 2-4 acrylate groups per molecule, said liquid polacrylic ester having emulsified therein from 2-50%, based on the weight of the emulsion, of a liquid alkyl hydrogen polysiloxane having the formula: ##STR4## in which n is a number from 4-30, R is an alkyl group containing from 1-4 carbon atoms, and the ratio of alkyl groups to H groups is in the range of 1:2 to 2:1, said emulsion further including an ultraviolet light sensitizer, an emulsifier for maintaining said polysiloxane in stable emulsion, and from 0.1-20%, based on the weight of said polyacrylic ester of an amine.
Claim 13
Dependent Claim
35 words
An emulsion as recited in claim 10 in which said amine is a monosecondary amine present in the form of a Michael addition reaction product, said amine being used in an amount of from 0.5-15%.
Claim 14
Dependent Claim
41 words
A method of producing release coated paper comprising applying to a surface of a sheet of paper a film of a liquid emulsion as recited in claim 1, and then exposing the wet coated surface to radiation to cure the same.
Claim 15
Dependent Claim
10 words
Release coated paper produced by the method of claim 12.
References Cited (Backward Citations)
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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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |