US5051464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterborne acrylourethane pigment dispersant polymer
Assignee: EIDP Inc
•
Filing: 1989-09-01
•
Granted: 1991-09-24
•
Expires: 2009-09-01
Abstract
Abstract An improved waterbased coating composition containing about 10-50% by weight of film forming binder and pigment in a pigment to binder weight ratio of about 1/100 to 200/100 dispersed in an aqueous carrier and having a pH of about 7-10; wherein the improvement used in the composition is a acrylourethane pigment dispersing polymer in an amount of about 0.5-10% by weight, based on the weight of the coating composition; the acrylourethane pigment dispersing polymer is composed of hydroxyl and carboxyl functional acrylic polyol having a hydroxyl no. of about 50-170 and an acid no. of about 30-120 and chain extended with an aliphatic, cycloaliphatic or aromatic diisocyanate in the presence of a monohydric alcohol and the polymer has a weight average molecular weight of about 10,000-40,000 and the carboxyl groups are neutralized with ammonia or an amine.
Inventors
- 👤 Jeffery W. Johnson
- 👤 Robert D. Prottas
- 👤 Clifford H. Strolle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/2815; C08G18/282; C08G18/40; C08G18/62; C08G18/6216; C08G18/625; C08G18/6254; C09; C09D; C09D7/00; C09D7/40; C09D7/45
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
An aqueous dispersion comprising an aqueous carrier and about 10-70% by weight of an acrylourethane pigment dispersing polymer; wherein the acrylourethane polymer consists essentially of about 90-98% by weight, based on the weight of the acrylourethane polymer, of a hydroxyl and carboxyl functional acrylic polyol having a hydroxyl no. of about 50-170 and an acid no. of about 30-120 chain extended with about 1-9% by weight, based on the weight of the acrylourethane polymer, of an aliphatic, cycloaliphatic or aromatic diisocyanate in the presence of about 0.5-1% by weight, based on the weight of the acrylourethane polymer, of monohydric alcohol; wherein the acrylourethane polymer has a weight average molecular weight of about 10,000-40,000 and the carboxyl groups are neutralized with ammonia or an amine and wherein the acrylic polyol consists essentially of polymerized monomers of alkyl methacrylate, alkyl acrylate wherein the alkyl groups have 1-12 carbon atoms, hydroxy alkyl acrylate or methacrylate wherein the alkyl groups have 1-8 carbon atoms and an alpha-beta ethylenically unsaturated monocarboxylic acid.
Claim 2
Dependent Claim
167 words
An aqueous dispersion comprising an aqueous carrier and about 10-70% by weight of an acrylourethane pigment dispersing polymer; wherein the acrylourethane polymer consists essentially of about 90-98% by weight, based on the weight of the acrylourethane polymer, of a hydroxyl and carboxyl functional acrylic polyol having a hydroxyl no. of about 50-170 and an acid no. of about 30-120 chain extended with about 1-9% by weight, based on the weight of the acrylourethane polymer, of an aliphatic, cycloaliphatic or aromatic diisocyanate in the presence of about 0.5-1% by weight, based on the weight of the acrylourethane polymer, of monohydric alcohol; wherein the acrylourethane polymer has a weight average molecular weight of about 10,000-40,000 and the carboxyl groups are neutralized with ammonia or an amine and wherein the acrylic polyol consists essentially of polymerized monomers of alkyl methacrylate, alkyl acrylate wherein the alkyl groups have 1-12 carbon atoms, hydroxy alkyl acrylate or methacrylate wherein the alkyl groups have 1-8 carbon atoms and an alpha-beta ethylenically unsaturated monocarboxylic acid.
Claim 3
Dependent Claim
26 words
The aqueous dispersion of claim 1 in which the aqueous carrier comprises about 10-30% by weight of solvent for the acrylourethane and 70-90% by weight water.
Claim 4
Dependent Claim
72 words
The aqueous dispersion of claim 2 in which the acrylic polyol consists essentially of polymerized monomers of about 50-60% by weight, based on the weight of the acrylic polyol, of methyl methacrylate, 25-35% by weight, based on the weight of the acrylic polyol, of butyl acrylate, 5-10% by weight, based on the weight of the acrylic polyol, of hydroxy ethyl methacrylate and 5-15% by weight of the acrylic polyol, of acrylic acid.
Claim 5
Dependent Claim
22 words
The aqueous dispersion of claim 2 in which the diisocyanate of the acrylourethane is isophorone diisocyanate and the monohydric alcohol is butanol.
Claim 6
Dependent Claim
20 words
The aqueous dispersion of claim 2 in which the diisocyanate is m-tetramethyl xylene diisocyanate and the monohydric alcohol is butanol.
Claim 7
Dependent Claim
17 words
The aqueous dispersion of claim 1 in which the acrylourethane contains up to 20% by weight styrene.
References Cited (Backward Citations)
US3028367A
Cited
US3671496A
Cited
US3878139A
Cited
US3853822A
Cited
US3867347A
Cited
US4064294A
Cited
US4234468A
Cited
US4247578A
Cited
US4255298A
Cited
US4243573A
Cited
US4322508A
Cited
US4248978A
Cited
US4309330A
Cited
US4443589A
Cited
US4558090A
Cited
US4426510A
Cited
US4578426A
Cited
US4617349A
Cited
US4732960A
Cited
US4730020A
Cited
US4659780A
Cited
US4711929A
Cited
US4839414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |