US4366282A
Expired / Lapsed
US
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Aqueous coating compositions for wood surfaces
Assignee: Allnex Austria GmbH
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Filing: 1980-11-05
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Granted: 1982-12-28
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Expires: 2000-11-05
Abstract
Abstract Polymer dispersions characterized in that they contain N-methylol(meth)acrylamide groups, comprising 30-65% by weight of methylmethacrylate, 10-17% by weight of ethylacrylate, 10-30% by weight of butylmethacrylate, 5-20% by weight of styrene, 3-10% by weight of N-methylol(meth)acrylamide, and containing as a coalescing agent from about 5 to 15% by weight, based on the dispersion, of a blend comprising 20-65% by weight of a high boiling paint solvent such as 2,2,4-trimethylpentane-1,5-diol-monotrimethylacetate and 80-35% by weight of ethylene glycol monoethyletheracetate, and/or ethylene glycol monobutyletheracetate, optionally in conjunction with basic varnishes based on cationic water-soluble acrylic copolymers, are described. The dispersions when used in coating compositions for coating wood surfaces provide a coating on wood having good mar resistance, hardness, and flexibility, while accentuating the wood grain and color.
Inventors
- 👤 Herbert Zima
- 👤 Laszlo Tulacs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:28
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
75 words
Polymer aqueous dispersions containing N-methylol(meth)acrylamide and comprising from about 30-65% by weight of methylmethacrylate, 10-17% by weight of ethylacrylate, 10-30% by weight of butylmethacrylate, 5-20% by weight of styrene, 3-10% by weight of N-methylol(meth)acrylamide, and containing from 5 to 15% by weight coalescing agent, based on the said polymer dispersion, of a blend comprising 20.65% by weight of a high boiling paint solvent and 80-35% by weight of ethylene glycol monoethyletheracetate, and/or ethylene glycol monobutyletheracetate.
Claim 2
Dependent Claim
75 words
Polymer aqueous dispersions containing N-methylol(meth)acrylamide and comprising from about 30-65% by weight of methylmethacrylate, 10-17% by weight of ethylacrylate, 10-30% by weight of butylmethacrylate, 5-20% by weight of styrene, 3-10% by weight of N-methylol(meth)acrylamide, and containing from 5 to 15% by weight coalescing agent, based on the said polymer dispersion, of a blend comprising 20.65% by weight of a high boiling paint solvent and 80-35% by weight of ethylene glycol monoethyletheracetate, and/or ethylene glycol monobutyletheracetate.
Claim 3
Dependent Claim
15 words
The polymer aqueous dispersions of claim 1 wherein the high boiling paint solvent is 2,2,4-trimethylpentane-1,5-diol-monotrimethylacetate.
Claim 4
Dependent Claim
79 words
Polymer aqueous dispersions containing N-methylol(meth)acrylamide and comprising from about 45-55% by weight of methylmethacrylate, 12-15% by weight of ethylacrylate, 15-25% by weight of butylmethacrylate, 5-10% by weight of styrene, 7-9% by weight of N-methylolmethacrylamide, and containing from about 5 to 15% by weight coalescing agent, based on the said polymer dispersion, of a blend comprising 4-6% by weight of a high boiling paint solvent, 7-9% by weight of ethylene glycol monoethyletheracetate, or 3-5% by weight of ethylene glycol monobutyletheracetate.
Claim 5
Dependent Claim
79 words
Polymer aqueous dispersions containing N-methylol(meth)acrylamide and comprising from about 45-55% by weight of methylmethacrylate, 12-15% by weight of ethylacrylate, 15-25% by weight of butylmethacrylate, 5-10% by weight of styrene, 7-9% by weight of N-methylolmethacrylamide, and containing from about 5 to 15% by weight coalescing agent, based on the said polymer dispersion, of a blend comprising 4-6% by weight of a high boiling paint solvent, 7-9% by weight of ethylene glycol monoethyletheracetate, or 3-5% by weight of ethylene glycol monobutyletheracetate.
Claim 6
Dependent Claim
15 words
The polymer aqueous dispersions of claim 3 wherein the high boiling paint solvent is 2,2,4-trimethylpentane-1,5-diol-monotrimethylacetate.
Claim 7
Dependent Claim
43 words
A paint composition comprising the polymer dispersions of claim 2 and in addition thereto an aqueous solution of a cationic amine adduct of a copolymer carrying glycidyl groups and comprising from about 20-40% by weight of glycidyl(meth)acrylate, and 40-80% by weight of methyl(meth)acrylate.
Claim 8
Dependent Claim
43 words
A paint composition comprising the polymer dispersions of claim 4 and in addition thereto an aqueous solution of a cationic amine adduct of a copolymer carrying glycidyl groups and comprising from about 20-40% by weight of glycidyl(meth)acrylate, and 40-80% by weight of methyl(meth)acrylate.
Claim 9
Dependent Claim
35 words
The paint composition of claim 5 wherein the copolymer of said amine adduct includes up to 40% by weight of other alkyl(meth)acrylates, the homopolymers of which have a glass transition temperature of over +40° C.
Claim 10
Dependent Claim
35 words
The paint composition of claim 6 wherein the copolymer of said amine adduct includes up to 40% by weight of other alkyl(meth)acrylates, the homopolymers of which have a glass transition temperature of over +40° C.
Claim 11
Dependent Claim
139 words
The process of preparing polymer aqueous dispersions comprising the steps of (1) charging a reaction vessel with water, emulsifiers, and initiators, and heating said reaction charge to a temperature of approximately 75° to 90° C.; (2) separately and simultaneously adding to said heated reaction charge (a) a monomer blend comprising 30-65% by weight of methylmethacrylate, 10-17% by weight of ethylacrylate, 10-30% by weight of butylmethacrylate, and 5-20% by weight of styrene, (b) 3-10% by weight of N-methylol(meth)acrylamide, and (c) an initiator solution, said addition being completed within about 90 minutes; (3) adding a coalescing agent to said charge which is a blend of from about 20-65% by weight of a high boiling paint solvent, and 80-35% by weight of ethylene glycol monoethyletheracetate, and/or ethylene glycol monobutyletheracetate; and (4) continuing to heat said reaction charge to effect substantially complete polymerization.
Claim 12
Dependent Claim
139 words
The process of preparing polymer aqueous dispersions comprising the steps of (1) charging a reaction vessel with water, emulsifiers, and initiators, and heating said reaction charge to a temperature of approximately 75° to 90° C.; (2) separately and simultaneously adding to said heated reaction charge (a) a monomer blend comprising 30-65% by weight of methylmethacrylate, 10-17% by weight of ethylacrylate, 10-30% by weight of butylmethacrylate, and 5-20% by weight of styrene, (b) 3-10% by weight of N-methylol(meth)acrylamide, and (c) an initiator solution, said addition being completed within about 90 minutes; (3) adding a coalescing agent to said charge which is a blend of from about 20-65% by weight of a high boiling paint solvent, and 80-35% by weight of ethylene glycol monoethyletheracetate, and/or ethylene glycol monobutyletheracetate; and (4) continuing to heat said reaction charge to effect substantially complete polymerization.
Claim 13
Dependent Claim
13 words
The process of claim 9 wherein said high boiling paint solvent is 2,2,4-trimethylpentane-1,5-diol-monotrimethylacetate.
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) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |