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US3919154A
Expired / Lapsed
US
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Aqueous coating composition of acrylic polymer latex, acrylic polymer solution and aminoplast and method of making
Assignee: EIDP Inc
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Filing: 1974-06-03
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Granted: 1975-11-11
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Expires: 1994-06-03
Abstract
Abstract Water-based paints having improved properties and application characteristics are disclosed. The paint, exclusive of optional components such as pigments, particulate fillers and catalysts, comprises a liquid, continuous aqueous phase. About 30 to about 50 percent by weight of this phase exclusive of the aforecited optional components, is made up of a mixture of (a) an amino resin crosslinking agent; (b) a mixture of at least two copolymers of acrylic monomers; and (c) an amine. The balance is water or, in certain embodiments, water and an organic solvent. The mixture of copolymers comprises (1) about 5 to about 50, preferably about 10 to about 30, parts by weight of a ''''solution polymer,'''' i.e., a carboxyfunctional copolymer of acrylic monomers that (i) is at least partially neutralized with an amine, (ii) is soluble in said aqueous phase, (iii) has average molecular weight (Mn) in the range of about 3,000 to about 20,000, and (iv) has Tg in the range of -15* to 50*C., and (2) about 50 to about 95, preferably about 70 to about 90, parts by weight of an ''''emulsion polymer,'''' i.e., a copolymer of acrylic monomers having carboxy, hydroxy or carboxy and hydroxy functionality that (i) is essentially insoluble in said continuous phase, (ii) has average molecular weight (Mn) in the range of about 3,000 to about 20,000, and (iii) has Tg of -15* to 50*C. The amino resin crosslinking agent is present in an amount in the range of about 15 to about 35 weight percent of the sum of the weight of solution polymer and the weight of emulsion polymer. The amine is a water-soluble amine and is present in an amount sufficient to solubilize the solution polymer in the aqueous phase at a pH range of about 7 to about 10, most commonly in the range of about 7.1 to about 8.5.
Inventors
- 👤 Yun-Feng Chang
- 👤 Mo-Fung Cheung
- 👤 Santokh S Labana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:14
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L61/00; C08L61/20
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
64 words
IN AN AQUEOUS DISPERSION OF PAINT IN WHICH A CARBOXYFUNCTIONAL POLYMER IS AT LEAST PARTIALLY NEUTRALIZED WITH A WATER-SOLUBLE AMINE AND DISPERSED WITH AN AMINO RESIN CROSSLINKING AGENT SELECTED FROM MELAMINE-FORMALHYDE RESINS AND UREA-FORMALHYLDE RESINS IN AN AQUEOUS SOLUTION OF WATER AND A WATER-SOLUBLE AMINE, THE IMPROVEMENT WHEREIN THE FILM-FORMING COMPONENTS OF SAID DISPERSON PAINT EXCLUSIVE OF SAID AMINO RESIN COMPRISES THE COMBINATION OF:
Claim 2
Dependent Claim
64 words
IN AN AQUEOUS DISPERSION OF PAINT IN WHICH A CARBOXYFUNCTIONAL POLYMER IS AT LEAST PARTIALLY NEUTRALIZED WITH A WATER-SOLUBLE AMINE AND DISPERSED WITH AN AMINO RESIN CROSSLINKING AGENT SELECTED FROM MELAMINE-FORMALHYDE RESINS AND UREA-FORMALHYLDE RESINS IN AN AQUEOUS SOLUTION OF WATER AND A WATER-SOLUBLE AMINE, THE IMPROVEMENT WHEREIN THE FILM-FORMING COMPONENTS OF SAID DISPERSON PAINT EXCLUSIVE OF SAID AMINO RESIN COMPRISES THE COMBINATION OF:
Claim 3
Dependent Claim
165 words
ABOUT 5 TO ABOUT 50 PARTS BY WEIGHT OF A SOLUTION POLYMER WHICH IS A CARBOXYL-FUNCTIONAL COPOLYMER OF ACRYLIC MONOMERS THAT, A. IS AT LEAST PARTIALLY NEUTRALIZED WITH SAID WATER-SOLUBLE AMINE, B. I SOLUBLE IN SAID AQUEOUS SOLUTION, C. HAS AN AVERAGE MOLECULAR WEIGHT (MN) IN THE RANGE OF ABOUT 3,000 TO ABOUT 20,000 AND D. HAS IN THE RANGE OF -15*C. TO 50*C., AND II. ABOUT 50 TO ABOUT 95 PARTS BY WEIGHT OF AN EMULSION POLYMER HAVING FUNCTIONALITY SELECTED FROM CARBOXY FUNCTIONALITY AND HYDROXY FUNCTIONALITY AND IS A COPOLYMER OF ACRYLIC MONOMERS THAT: A. IS ESSENTIALLY INSOLUBLE IN SAID AQUEOUS SOLUTION, B. HAS AVERAGE MOLECUALR WEIGHT (MN) IN THE RANGE OF ABOUT 3,000 TO ABOUT 20,000, AND C. HAS TG IN THE RANGE OF -15*C. TO 50*C., AND WHEREIN SAID AMINO RESIN CROSSLINKING AGENT IS PRESENT IN AN AMOUNT IN TH RANGE OF ABOUT 15 TO 35 WEIGHT PERCENT OF THE SUM OF THE WEIGHTS OF SAID SOLUTION POLYMER AND SAID EMULSION POLYMER.
Claim 4
Dependent Claim
165 words
ABOUT 5 TO ABOUT 50 PARTS BY WEIGHT OF A SOLUTION POLYMER WHICH IS A CARBOXYL-FUNCTIONAL COPOLYMER OF ACRYLIC MONOMERS THAT, A. IS AT LEAST PARTIALLY NEUTRALIZED WITH SAID WATER-SOLUBLE AMINE, B. I SOLUBLE IN SAID AQUEOUS SOLUTION, C. HAS AN AVERAGE MOLECULAR WEIGHT (MN) IN THE RANGE OF ABOUT 3,000 TO ABOUT 20,000 AND D. HAS IN THE RANGE OF -15*C. TO 50*C., AND II. ABOUT 50 TO ABOUT 95 PARTS BY WEIGHT OF AN EMULSION POLYMER HAVING FUNCTIONALITY SELECTED FROM CARBOXY FUNCTIONALITY AND HYDROXY FUNCTIONALITY AND IS A COPOLYMER OF ACRYLIC MONOMERS THAT: A. IS ESSENTIALLY INSOLUBLE IN SAID AQUEOUS SOLUTION, B. HAS AVERAGE MOLECUALR WEIGHT (MN) IN THE RANGE OF ABOUT 3,000 TO ABOUT 20,000, AND C. HAS TG IN THE RANGE OF -15*C. TO 50*C., AND WHEREIN SAID AMINO RESIN CROSSLINKING AGENT IS PRESENT IN AN AMOUNT IN TH RANGE OF ABOUT 15 TO 35 WEIGHT PERCENT OF THE SUM OF THE WEIGHTS OF SAID SOLUTION POLYMER AND SAID EMULSION POLYMER.
Claim 5
Dependent Claim
42 words
An aqueous dispersion of paint in accordance with claim 1 adapted for spray paint application by adjusting the water content thereof to between about 50 and about 65 weight percent of said dispersion and adjusting the pH to between 7 and 10.
Claim 6
Dependent Claim
40 words
An aqueous dispersion of paint in accordance with claim 2 wherein about 5 to about 20 volume percent of the water in said diSpersion is displaced by an equal volume of an essentially non-ionizable organic solvent for said solution resin.
Claim 7
Dependent Claim
17 words
An aqueous dispersion of paint in accordance with claim 3 wherein said organic solvent is an alcohol.
Claim 8
Dependent Claim
74 words
An aqueous dispersion of paint in accordance with claim 1 wherein in addition to said solution polymer and said emulsion polymer, said paint dispersion contains a stabilizer polymer which is a carboxy-functional acrylic copolymer that is soluble in said aqueous solution, has average molecular weight (Mn) below that of said solution polymer and is present in said aqueous dispersion in an amount in the range of about 0.01 to about 10 parts by weight.
Claim 9
Dependent Claim
79 words
An aqueous dispersion of paint in accordance with claim 1 wherein in addition to said solution polymer and said emulsion polymer, said paint dispersion contains a stabilizer polymer which is a carboxy-functional copolymer of acrylic monomers that is soluble in said aqueous solution, has average molecular weight (Mn) in the range of about 3,000 to about 8,000, and is present in said aqueous dispersion in an amount in the range of about 0.025 to about 5 parts by weight.
Claim 10
Dependent Claim
232 words
In an aqueous dispersion of paint in which a carboxyfunctional polymer is at least partially neutralized with a water-soluble amine and dispersed with an amino resin crosslinking agent selected from melamine-formaldehyde resins and urea-formaldehyde resins in an aqueous solution of water and a water-soluble amine, the improvement wherein the filmforming components of said dispersion of paint exclusive of said amino resin consist essentially of: I. about 10 to about 30 parts by weight of a solution polymer which is a carboxy-functional copolymer of acrylic monomers that: A. is at least partially neutralized with said water soluble amine, B. is soluble in said aqueous solution, C. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and D. has Tg in the range of -15*C. to 50*C., II. about 70 to about 90 parts by weight of an emulsion polymer having functionality selected from carboxy functionality and hydroxy functionality and is a copolymer of acrylic monomers that: A. is essentially insoluble in said aqueous solution, b. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and C. has Tg in the range of -15*C., to 50*C., and said amino resin crosslinking agent is present in an amount in the range of about 15 to about 35 weight percent of the sum of the weights of said solution polymer and said emulsion polymer.
Claim 11
Dependent Claim
232 words
In an aqueous dispersion of paint in which a carboxyfunctional polymer is at least partially neutralized with a water-soluble amine and dispersed with an amino resin crosslinking agent selected from melamine-formaldehyde resins and urea-formaldehyde resins in an aqueous solution of water and a water-soluble amine, the improvement wherein the filmforming components of said dispersion of paint exclusive of said amino resin consist essentially of: I. about 10 to about 30 parts by weight of a solution polymer which is a carboxy-functional copolymer of acrylic monomers that: A. is at least partially neutralized with said water soluble amine, B. is soluble in said aqueous solution, C. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and D. has Tg in the range of -15*C. to 50*C., II. about 70 to about 90 parts by weight of an emulsion polymer having functionality selected from carboxy functionality and hydroxy functionality and is a copolymer of acrylic monomers that: A. is essentially insoluble in said aqueous solution, b. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and C. has Tg in the range of -15*C., to 50*C., and said amino resin crosslinking agent is present in an amount in the range of about 15 to about 35 weight percent of the sum of the weights of said solution polymer and said emulsion polymer.
Claim 12
Dependent Claim
20 words
An aqueous dispersion of paint in accordance with claim 7 having pH in the range of 7 to about 10.
Claim 13
Dependent Claim
21 words
An aqueous dispersion of the paint in accordance with claim 7 having pH in the range of 7 to about 9.5.
Claim 14
Dependent Claim
21 words
An aqueous dispersion of paint in accordance with claim 7 having pH in the range of 7 to about 9. 9.
Claim 15
Dependent Claim
22 words
An aqueous dispersion of paint in accordance with claim 7 wherein said solution polymer in addition to being carboxy-functional is also hydroxy-functional.
Claim 16
Dependent Claim
22 words
An aqueous dispersion of paint in accordance with claim 7 wherein said solution polymer in addition to being carboxy-functional is also amide-functional.
Claim 17
Dependent Claim
288 words
In a method for producing an aqueous dispersion of paint in which a carboxy-functional polymer is at least partially neutralized with a water-soluble amine and dispersed with an amino resin crosslinking agent selected from melamineformaldehyde resins and urea-formaldehyde resins in a continuous phase consisting essentially of water-dilutable organic solvent and an aqueous solution of water and water-soluble amine, the improvement which comprises intimately dispersing with said water, said amine resin crosslinking agent and said water-soluble amine: I. about 5 to about 50 parts by weight of a solution polymer which is a carboxy-functional copolymer of acrylic monomers that: A. is at least partially neutralized with water-soluble amine, B. is soluble in said aqueous solution, C. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and D. has Tg in the range of -15*C., to 50*C., and II. An aqueous emulsion consisting essentially of water, water-soluble amine, and about 50 to about 95 parts by weight of an emulsion polymer having functionality selected from carboxy functionality and hydroxy functionality and is a copolymer or acrylic monomers that: A. is essentially insoluble in said aqueous solution, B. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and C. has Tg in the range of -15*C. to 50*C., said amino resin crosslinking agent being present in an amount in the range of about 15 to about 35 weight percent of the sum of the weights of said solution polymer and said emulsion polymer and said water-dilutable organic solvent constituting between 5 and 20 percent of said continuous phase when the combination of said water and said water-dilutable organic solvent comprises 50 to 65 weight percent of said aqueous dispersion.
Claim 18
Dependent Claim
288 words
In a method for producing an aqueous dispersion of paint in which a carboxy-functional polymer is at least partially neutralized with a water-soluble amine and dispersed with an amino resin crosslinking agent selected from melamineformaldehyde resins and urea-formaldehyde resins in a continuous phase consisting essentially of water-dilutable organic solvent and an aqueous solution of water and water-soluble amine, the improvement which comprises intimately dispersing with said water, said amine resin crosslinking agent and said water-soluble amine: I. about 5 to about 50 parts by weight of a solution polymer which is a carboxy-functional copolymer of acrylic monomers that: A. is at least partially neutralized with water-soluble amine, B. is soluble in said aqueous solution, C. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and D. has Tg in the range of -15*C., to 50*C., and II. An aqueous emulsion consisting essentially of water, water-soluble amine, and about 50 to about 95 parts by weight of an emulsion polymer having functionality selected from carboxy functionality and hydroxy functionality and is a copolymer or acrylic monomers that: A. is essentially insoluble in said aqueous solution, B. has average molecular weight (Mn) in the range of about 3, 000 to about 20,000, and C. has Tg in the range of -15*C. to 50*C., said amino resin crosslinking agent being present in an amount in the range of about 15 to about 35 weight percent of the sum of the weights of said solution polymer and said emulsion polymer and said water-dilutable organic solvent constituting between 5 and 20 percent of said continuous phase when the combination of said water and said water-dilutable organic solvent comprises 50 to 65 weight percent of said aqueous dispersion.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |