Patent US4808656A successfully refreshed from Google Patents.
US4808656A
Expired / Lapsed
US
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High solids coating compositions
Assignee: PPG Industries Ohio Inc
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Filing: 1987-05-04
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Granted: 1989-02-28
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Expires: 2007-05-04
Abstract
Abstract A curable high solids coating composition containing a reactive acrylic polymer formed from polymerizing an alpha, beta-ethylenically unsaturated monomer containing a functional group such as a hydroxyl group and other non-functional alpha, beta-ethylenically unsaturated monomers is disclosed. The polymer is prepared by organic solution polymerization techniques in an organic solvent and in the presence of t-amylperoxy compound and a 2,4-diaryl-1-alkene. The coating compositions are particularly useful as coatings for automobiles where they can be deposited as non-yellowing clear coats.
Inventors
- 👤 Charles M. Kania
- 👤 Samuel Porter, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:18
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F2/00; C08F2/04; C08F2/06; C09; C09D; C09D133/00; C09D133/04; C09D133/14; C08L; C08L61/00; C08L61/20
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
102 words
A curable high solids coating composition containing at least 60 percent by weight resin solids and capable of being deposited as a non-yellowing clear coat comprising a reactive acrylic polymer formed from polymerizing: (A) from 10 to 60 percent by weight of a polymerizable alpha, beta-ethylenically unsaturated monomer containing a functional group which participates in the curing of the coating composition, (B) from 40 to 90 percent by weight of a polymerizable alpha, beta-ethylenically unsaturated monomer free of functional groups; said acrylic polymer being prepared in organic solvent by solution polymerization techniques in the presence of a t-amylperoxy compound and a 2,4-diaryl-1-alkene.
Claim 2
Dependent Claim
102 words
A curable high solids coating composition containing at least 60 percent by weight resin solids and capable of being deposited as a non-yellowing clear coat comprising a reactive acrylic polymer formed from polymerizing: (A) from 10 to 60 percent by weight of a polymerizable alpha, beta-ethylenically unsaturated monomer containing a functional group which participates in the curing of the coating composition, (B) from 40 to 90 percent by weight of a polymerizable alpha, beta-ethylenically unsaturated monomer free of functional groups; said acrylic polymer being prepared in organic solvent by solution polymerization techniques in the presence of a t-amylperoxy compound and a 2,4-diaryl-1-alkene.
Claim 3
Dependent Claim
21 words
The composition of claim 1 in which the alpha, beta-ethylenically unsaturated monomer containing a functional group is a hydroxyl group-containing monomer.
Claim 4
Dependent Claim
27 words
The composition of claim 2 in which the hydroxyl group-containing monomer is selected from the class consisting of hydroxyethyl acrylate and methacrylate and hydroxypropyl acrylate and methacrylate.
Claim 5
Dependent Claim
45 words
The composition of claim 1 in which the polymerizable alpha, beta-ethylenically unsaturated monomer (B) is selected from the class consisting of alkyl esters of acrylic and methacrylic acid containing from 1 to 20 carbon atoms in the alkyl group, vinyl aromatic compounds and mixtures thereof.
Claim 6
Dependent Claim
19 words
The composition of claim 1 in which the organic solvent has a boiling point of at least 150° C.
Claim 7
Dependent Claim
60 words
The composition of claim 5 in which the organic solvent comprises a liquid ester of the structure: ##STR3## where R 1 is straight or branched chain alkyl of 1 to 6 carbon atoms and R 2 is straight or branched chain alkyl of 1 to 7 carbon atoms and R 1 plus R 2 contains at least 6 carbon atoms.
Claim 8
Dependent Claim
24 words
The composition of claim 6 in which the liquid ester is selected from the class consisting of hexyl acetate, heptyl acetate and mixtures thereof.
Claim 9
Dependent Claim
14 words
The composition of claim 1 in which the t-amylperoxy compound is a t-amylperoxy ester.
Claim 10
Dependent Claim
23 words
The composition of claim 8 in which the t-amylperoxy ester is selected from the class consisting of t-amylperoxy acetate, ethyl-3,3-di(t-amylperoxy)butyrate and mixtures thereof.
Claim 11
Dependent Claim
11 words
The composition of claim 1 in which the 2,4-diaryl-1-alkene is 2,4-diphenyl-4-methyl-1-pentene.
Claim 12
Dependent Claim
30 words
The composition of claim 1 in which the t-amylperoxy compound is present in amounts of 1.5 to 10 percent by weight based on total weight of alpha, beta-ethylenically unsaturated monomers.
Claim 13
Dependent Claim
29 words
The composition of claim 1 in which the 2,4-diaryl-1-alkene is present in amounts of 1 to 20 percent by weight based on total weight of alpha, beta-ethylenically unsaturated monomers.
Claim 14
Dependent Claim
25 words
The composition of claim 1 which contains a separate curing agent reactive with the functional groups in the acrylic polymer to form a cured product.
Claim 15
Dependent Claim
11 words
The composition of claim 2 which contains an aminoplast curing agent.
Claim 16
Dependent Claim
31 words
The composition of claim 14 in which the aminoplast curing agent is present in amounts of 25 to 50 percent by weight based on total weight of acrylic polymer and aminoplast.
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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |