US4277385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High PVC latex paint
Assignee: Akzo Nobel Paints LLC
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Filing: 1980-05-01
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Granted: 1981-07-07
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Expires: 2000-05-01
Abstract
Abstract An opacified latex paint comprising acrylic film-forming latex binders in combination with minor amounts of opacifying pigment and substantial amounts of non-film-forming polymeric particles (plastic pigment) provides a latex paint composition having desirable film integrity properties. The plastic pigment latex paint is compounded at a substantially high pigment-volume-content (PVC) greater than 75% PVC and yet produces a continuous crack-free paint film even though the dried paint film is highly loaded with non-film-forming components. The opacified paint films maintain excellent physical properties such as scrub resistance, burnish resistance, mar resistance, stain resistance, and other desirable paint film integrity properties.
Inventors
- 👤 Howard E. Carroll
- 👤 Gerald M. Sweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:15
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D7/00; C09D7/40; C09D7/42; C08; C08L; C08L2205/00; C08L2205/14; C08L2205/18; C08L25/00; C08L25/02; C08L25/04; C08L25/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
216 words
An aqueous latex dispersion paint composition which coalesces at an ambient coalescent temperature into a hardened paint film, said latex paint having about 30% to 70% by weight total solids, the improvement comprising on a dry solids volumn basis: 15% to 25% of a film-forming acrylic latex binder having an average polymer particle size between about 0.1 and 0.5 microns and a glass transition temperature at least about 5° C. below said coalescent temperature whereby said binder particles will coalesce into a binding matrix, said binder being an acrylic copolymer derived from copolymerization of at least 90% acrylic monomer and the remaining being ethylenically unsaturated monomers on a weight basis; 72% to 77% of solid, non-cellular, non-film-forming polymer particles having an average particle size diameter of between about 0.2 and 0.8 micron and having a glass transition temperature at least about 30° C. above the glass transition temperature of said acrylic binder, said non-film-forming particles being polymerized ethylenically unsaturated monomers having carbon-to-carbon unsaturation copolymerized with 0.2 to 2% by weight unsaturated acid selected from acrylic or methacrylic acid; 3% to 8% opacified pigment having refractive index of at least about 1.8; said latex paint substantially free of inorganic non-opacifying pigment; and said latex paint having a pigment-volume-content (PVC) greater than 75% and less than 85% PVC.
Claim 2
Dependent Claim
216 words
An aqueous latex dispersion paint composition which coalesces at an ambient coalescent temperature into a hardened paint film, said latex paint having about 30% to 70% by weight total solids, the improvement comprising on a dry solids volumn basis: 15% to 25% of a film-forming acrylic latex binder having an average polymer particle size between about 0.1 and 0.5 microns and a glass transition temperature at least about 5° C. below said coalescent temperature whereby said binder particles will coalesce into a binding matrix, said binder being an acrylic copolymer derived from copolymerization of at least 90% acrylic monomer and the remaining being ethylenically unsaturated monomers on a weight basis; 72% to 77% of solid, non-cellular, non-film-forming polymer particles having an average particle size diameter of between about 0.2 and 0.8 micron and having a glass transition temperature at least about 30° C. above the glass transition temperature of said acrylic binder, said non-film-forming particles being polymerized ethylenically unsaturated monomers having carbon-to-carbon unsaturation copolymerized with 0.2 to 2% by weight unsaturated acid selected from acrylic or methacrylic acid; 3% to 8% opacified pigment having refractive index of at least about 1.8; said latex paint substantially free of inorganic non-opacifying pigment; and said latex paint having a pigment-volume-content (PVC) greater than 75% and less than 85% PVC.
Claim 3
Dependent Claim
15 words
The latex paint in claim 1 wherein the binder polymer consists of copolymerized acrylic monomers.
Claim 4
Dependent Claim
216 words
An aqueous latex dispersion paint composition which coalesces at an ambient coalescent temperature into a hardened paint film, said latex paint having about 30% to 70% by weight total solids, the improvement comprising on a dry solids volume basis: 15% to 25% of a film-forming acrylic latex binder having an average polymer particle size between about 0.1 and 0.5 microns and a glass transition temperature at least about 5° C. below said colescent temperature whereby said binder particles will coalesce into a binding matrix, said binder being an acrylic copolymer derived from copolymerization of at least 90% acrylic monomer and the remaining being ethylenically unsaturated monomers on a weight basis; 72% to 77% of solid, non-cellular, non-film-forming polymer particles having an average particle size diameter of between about 500° A and 5000 A° and having a glass transition temperature at least about 30° C. above the glass transition temperature of said acrylic binder, said non-film-forming particles being polymerized ethylenically unsaturated monomers having carbon-to-carbon unsaturation copolymerized with 0.2 to 2% by weight unsaturated acid selected from acrylic or methacrylic acid: 3% to 8% opacified pigment having refractive index of at least about 1.8; and said latex paint substantially free of inorganic non-opacifying pigment and having a pigment-volume-content (PVC) greater than 75% PVC and less than 85% PVC.
Claim 5
Dependent Claim
216 words
An aqueous latex dispersion paint composition which coalesces at an ambient coalescent temperature into a hardened paint film, said latex paint having about 30% to 70% by weight total solids, the improvement comprising on a dry solids volume basis: 15% to 25% of a film-forming acrylic latex binder having an average polymer particle size between about 0.1 and 0.5 microns and a glass transition temperature at least about 5° C. below said colescent temperature whereby said binder particles will coalesce into a binding matrix, said binder being an acrylic copolymer derived from copolymerization of at least 90% acrylic monomer and the remaining being ethylenically unsaturated monomers on a weight basis; 72% to 77% of solid, non-cellular, non-film-forming polymer particles having an average particle size diameter of between about 500° A and 5000 A° and having a glass transition temperature at least about 30° C. above the glass transition temperature of said acrylic binder, said non-film-forming particles being polymerized ethylenically unsaturated monomers having carbon-to-carbon unsaturation copolymerized with 0.2 to 2% by weight unsaturated acid selected from acrylic or methacrylic acid: 3% to 8% opacified pigment having refractive index of at least about 1.8; and said latex paint substantially free of inorganic non-opacifying pigment and having a pigment-volume-content (PVC) greater than 75% PVC and less than 85% PVC.
Claim 6
Dependent Claim
15 words
The latex paint in claim 3 wherein the binder polymer consists of copolymerized acrylic monomers.
References Cited (Backward Citations)
US3423351A
Cited
US4069186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |