US4065416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-based coatings with reduced solvent or water popping and sagging
Assignee: PPG Industries Inc
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Filing: 1975-10-01
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Granted: 1977-12-27
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Expires: 1995-10-01
Abstract
Abstract This invention relates to a water-based coating composition in which solvent or water popping and sagging are eliminated or substantially reduced. The composition comprises a thermosetting, film-forming organic binder dispersed in an aqueous medium containing from 60 to 100 parts by weight of water and from 0 to 40 parts by weight of a volatile organic solvent. The organic binder is formulated from (a) an acid-containing interpolymer adapted to be dissolved or dispersed in water with the aid of a base and (b) a water-soluble or water-dispersible polyether polyol or polyester polyol having a molecular weight of at least 300. The interpolymer consists essentially of the interpolymerization product of an N-alkoxyalkyl-substituted amide, an alpha, beta-ethylenically unsaturated carboxylic acid, and at least one other monomer containing a ##STR1## In addition to the elimination of, or substantial reduction in solvent or water popping and sagging of the composition, films formed from the compositions exhibit good properties, such as hardness, water resistance, salt spray resistance and stain resistance.
Inventors
- 👤 Roger M. Christenson
- 👤 Clarence E. Evjen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:19
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/24
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
107 words
A water-based coating composition having reduced solvent popping, water-popping and sagging characteristics comprising a thermosetting, film-forming organic binder dispersed in an aqueous medium containing at least 60 percent by weight of water, said organic binder consisting essentially of: A. an interpolymer consisting essentially of the interpolymerization product of: 1. from about 10 percent to about 40 percent by weight of an N-alkoxyalkyl-substituted amide represented by the structure: ##STR6## wherein R' is an aliphatic hydrocarbon radical containing from 2 to 6 carbon atoms and having a single terminal polymerizable alpha, beta-ethylenically unsaturated group and R is a lower alkyl radical containing from 1 to 8 carbon atoms, 2.
Claim 2
Dependent Claim
107 words
A water-based coating composition having reduced solvent popping, water-popping and sagging characteristics comprising a thermosetting, film-forming organic binder dispersed in an aqueous medium containing at least 60 percent by weight of water, said organic binder consisting essentially of: A. an interpolymer consisting essentially of the interpolymerization product of: 1. from about 10 percent to about 40 percent by weight of an N-alkoxyalkyl-substituted amide represented by the structure: ##STR6## wherein R' is an aliphatic hydrocarbon radical containing from 2 to 6 carbon atoms and having a single terminal polymerizable alpha, beta-ethylenically unsaturated group and R is a lower alkyl radical containing from 1 to 8 carbon atoms, 2.
Claim 3
Dependent Claim
70 words
from about 5 to about 20 percent by weight of an alpha, beta-ethylenically unsaturated carboxylic acid, and 3. at least one other ethylenically unsaturated monomer containing a ##STR7## wherein said interpolymer is solubilized by neutralizing at least a portion of the carboxylic acid groups thereof with a base; and B. from about 5 percent to about 50 percent by weight of interpolymer solids of a non-volatile water-soluble or water-dispersible polyether
Claim 4
Dependent Claim
70 words
from about 5 to about 20 percent by weight of an alpha, beta-ethylenically unsaturated carboxylic acid, and 3. at least one other ethylenically unsaturated monomer containing a ##STR7## wherein said interpolymer is solubilized by neutralizing at least a portion of the carboxylic acid groups thereof with a base; and B. from about 5 percent to about 50 percent by weight of interpolymer solids of a non-volatile water-soluble or water-dispersible polyether
Claim 5
Dependent Claim
29 words
polyol or polyester polyol having a molecular weight of at least 300. 2. The water-based coating composition of claim 1 wherein the N-alkoxyalkyl-substituted amide is N-(butoxymethyl)acrylamide or N-(butoxymethyl) methacrylamide.
Claim 6
Dependent Claim
20 words
The water-based coating composition of claim 1 wherein said alpha, beta-ethylenically unsaturated carboxylic acid is acrylic acid or methacrylic acid.
Claim 7
Dependent Claim
22 words
The water-based coating composition of claim 1 wherein the other monomer containing a ##STR8## is a mixture of hardening and flexibilizing monomers.
Claim 8
Dependent Claim
27 words
The water-based coating composition of claim 4 wherein the hardening monomer is of styrene, vinyl toluene or an alkyl methacrylate having from 1 to 4 carbon atoms.
Claim 9
Dependent Claim
57 words
The water-based coating composition of claim 4 wherein the flexibilizing monomer is an alkyl ester of acrylic acid or an alkyl ester of methacrylic acid, and wherein the alkyl groups have from 1 to 13 carbon atoms in the case of the acrylic esters and from 5 to 16 carbon atoms in the case of methacrylic esters.
Claim 10
Dependent Claim
14 words
The water-based coating composition of claim 1 wherein said base is a monomeric amine.
Claim 11
Dependent Claim
12 words
The water-based coating composition of claim 1 wherein said base is dimethylethanolamine.
Claim 12
Dependent Claim
16 words
The water-based coating composition of claim 1 wherein said polyether polyol is a sucrose polyether polyol.
Claim 13
Dependent Claim
15 words
The water-based coating composition of claim 1 wherein said polyester polyol is a polycaprolactone polyol.
References Cited (Backward Citations)
US3079434A
Cited
US3085085A
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US3288740A
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US3652478A
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US3860549A
Cited
US3959202A
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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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |