Patent EP0228532A1 successfully refreshed from Google Patents.
US4043953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ambient temperature, moisture-curable acrylic-silane coating compositions having improved potlife
Assignee: PPG Industries Inc
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Filing: 1975-05-02
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Granted: 1977-08-23
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Expires: 1995-05-02
Abstract
Abstract The potlife of an ambient temperature, moisture-curable coating composition comprising an acrylic-silane interpolymer and a cure-accelerating catalyst is increased by the addition to the composition of from about 0.5 percent to about 15 percent by weight of interpolymer solids of a monomeric hydrolytically reactive organo-silicon compound represented by the structural formula: X.sub.n Si(OR).sub.4-n wherein X is an organic radical having from 1 to 12 carbon atoms, R is methyl, ethyl, 2-methoxyethyl, 2-ethoxyethyl, or an acyl group containing 5 or less carbon atoms and n is 0, 1 or 2.
Inventors
- 👤 Wen-Hsuan Chang
- 👤 Marvis E. Hartman
- 👤 Roger L. Scriven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:28
CPC Classifications
C; C09; C09D; C09D143/00; C09D143/04; C08; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5415
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
33 words
In an ambient temperature, moisture-curable coating composition which includes: A. an acrylic-silane interpolymer of: 1. at least one ethylenically unsaturated monomer which contains ##STR13## group and is devoid of active hydrogen atoms; and
Claim 2
Dependent Claim
33 words
In an ambient temperature, moisture-curable coating composition which includes: A. an acrylic-silane interpolymer of: 1. at least one ethylenically unsaturated monomer which contains ##STR13## group and is devoid of active hydrogen atoms; and
Claim 3
Dependent Claim
78 words
a copolymerizable organoalkoxysilane selected from the group consistng of acrylatoalkoxysilanes, methacrylatoalkoxysilanes and vinylalkoxysilanes; and B. a cure accelerating catalyst; the improvement which comprises the addition of: C. from about 0.5 percent to about 15 percent by weight of interpolymer solids of a monomeric hydrolytically reactive organosilicon stabilizer represented by the formula: X.sub.n Si(OR).sub.4-n wherein X is an organic radical having from 1 to 12 carbon atoms, R may be methyl, ethyl, 2-methoxymethyl, 2-ethoxyethyl or an acyl group containing
Claim 4
Dependent Claim
78 words
a copolymerizable organoalkoxysilane selected from the group consistng of acrylatoalkoxysilanes, methacrylatoalkoxysilanes and vinylalkoxysilanes; and B. a cure accelerating catalyst; the improvement which comprises the addition of: C. from about 0.5 percent to about 15 percent by weight of interpolymer solids of a monomeric hydrolytically reactive organosilicon stabilizer represented by the formula: X.sub.n Si(OR).sub.4-n wherein X is an organic radical having from 1 to 12 carbon atoms, R may be methyl, ethyl, 2-methoxymethyl, 2-ethoxyethyl or an acyl group containing
Claim 5
Dependent Claim
42 words
5 or less carbon atoms and n is 0, 1 or 2. 2. The coating composition of claim 1 wherein said ethylenically unsaturated monomer is selected from the group consisting of alkyl acrylates, alkyl methacrylates, vinyl aromatic hydrocarbons and mono-unsaturated organic nitriles.
Claim 6
Dependent Claim
26 words
The coating composition of claim 2 wherein the alkyl acrylate is selected from the group consisting of ethyl acrylate, propyl acrylate, butyl acrylate, and 2-ethylhexyl acrylate.
Claim 7
Dependent Claim
26 words
The coating composition of claim 2 wherein the alkyl methacrylate is selected from the group consisting of methyl methacrylate, lauryl methacrylate, butyl methacrylate and isobutyl methacrylate.
Claim 8
Dependent Claim
23 words
The coating composition of claim 2 wherein the vinyl aromatic hydrocarbon is selected from the group consisting of styrene, vinyl toluene, and alpha-methylstyrene.
Claim 9
Dependent Claim
22 words
The coating composition of claim 2 wherein the monounsaturated organic nitrile is selected from the group consisting of acrylonitrile, methacrylonitrile and ethacrylonitrile.
Claim 10
Dependent Claim
20 words
The coating composition of claim 1 wherein the methacrylatoalkoxysilane is selected from the group consisting of gammamethacryloxypropyltrimethoxysilane, gamma-methacryloxypropyltriethoxysilane and gamma-methacryloxypropyltris(2-ethoxyethoxy)silane.
Claim 11
Dependent Claim
11 words
The coating composition of claim 1 wherein the methacrylatoalkoxysilane is gamma-methacryloxypropyltrimethoxysilane.
Claim 12
Dependent Claim
20 words
The coating composition of claim 1 wherein the vinylalkoxysilane is selected from the group consisting of vinyltrimethoxysilane, vinyltriethoxysilane and vinyltris(2-ethoxyethoxy)silane.
Claim 13
Dependent Claim
11 words
The coating composition of claim 1 wherein the vinylalkoxysilane is vinyltrimethoxysilane.
Claim 14
Dependent Claim
31 words
The coating composition of claim 1 wherein the cure accelerating catalyst is selected from the group consisting of an organic acid, a metallic salt of an organic acid and mixtures thereof.
Claim 15
Dependent Claim
14 words
The coating composition of claim 11 wherein the organic acid is p-toluene sulfonic acid.
Claim 16
Dependent Claim
13 words
The coating composition of claim 11 wherein the organic acid is n-butylphosphoric acid.
Claim 17
Dependent Claim
13 words
The coating composition of claim 11 wherein the metallic salt is dibutyltin dilaurate.
Claim 18
Dependent Claim
13 words
The coating composition of claim 11 wherein the organic base is isophorone diamine.
Claim 19
Dependent Claim
36 words
The coating composition of claim 1 wherein said organic radical X is an alkyl radical, aryl radical or an organic radical containing functional groups wherein said functional group is linked to silicon through a hydrocarbon linkage.
Claim 20
Dependent Claim
21 words
The coating composition of claim 16 wherein said alkyl radical is an alkyl radical having from 1 to 12 carbon atoms.
Claim 21
Dependent Claim
21 words
The coating composition of claim 16 wherein said aryl radical is selected from the group consisting of phenyl, bisphenyl and naphthyl.
Claim 22
Dependent Claim
31 words
The coating composition of claim 16 wherein the functional group of the functional group containing radical may be hydroxyl, mercaptan, epoxy, glycidyl, ether, amine, diamine, urea, carboxyl, amide, halide, or vinyl.
Claim 23
Dependent Claim
12 words
The coating composition of claim 1 wherein said stabilizer is methyl silicate.
Claim 24
Dependent Claim
18 words
The coating composition of claim 1 wherein said stabilizer is a partially condensed 2-ethoxyethyl ester of silicic acid.
Claim 25
Dependent Claim
11 words
The coating composition of claim 1 wherein said stabilizer is phenyltrimethoxysilane.
Claim 26
Dependent Claim
11 words
The coating composition of claim 1 wherein said stabilizer is vinyltriacetoxysilane.
Claim 27
Dependent Claim
98 words
The ambient temperature, moisture-curable coating composition of claim 1 wherein said interpolymer (A) consists essentially of from about 75 percent to about 98 percent by weight of said unsaturated monomer and from about 2 percent to about 25 percent by weight of said organoalkoxysilane; said cure accelerating catalyst (B) is present in said composition in an amount of from about 0.1 percent to about 5.0 percent by weight of interpolymer solids and said organo-silicon stabilizer (C) is present in said composition in an amount of from about 0.5 percent to about 15 percent by weight of interpolymer solids.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |