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Adsorbing vinyl ester binders
US9676932B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9676932-B2 |
| Application number | US-201214418099-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 2, 2012 |
| Priority date | Aug 2, 2012 |
| Publication date | Jun 13, 2017 |
| Grant date | Jun 13, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention relates to a composition of a stable aqueous dispersion of polymer particles comprising structural units of a) vinyl acetate; b) a vinyl ester of a branched carboxylic acid monomer; and c) a phosphorus acid monomer. The composition of the present invention provides vinyl ester/phosphorus acid based polymer particles that improve hiding efficiency in pigmented coatings formulations.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition comprising a stable aqueous dispersion of polymer particles comprising, based on the weight of the polymer particles, from 63.9 to 90 weight percent structural units of vinyl acetate, from 0.1 to 5 weight percent structural units of a phosphoethyl methacrylate or a salt thereof, and from 5 to 34.4 weight percent structural units of a vinyl ester of a branched carboxylic acid monomer characterized by the following formula: where R 1 and R 2 are each independently C 1 -C 10 -alkyl. 2. The composition of claim 1 wherein the polymer particles further comprise from 0.1 to 2.0 weight percent structural units of a sulfur acid monomer or a salt thereof, based on the weight of the polymer particles; and/or from 0.1 to 50 weight percent structural units of an acrylate monomer, based on the weight of the polymer particles. 3. The composition of claim 1 wherein the polymer particles further comprise from 0.1 to 2 weight percent structural units of 2 acrylamido-2-methyl propanesulfonic acid or vinyl sulfonic acid or salts thereof and from 1 to 30 weight percent structural units of butyl acrylate, based on the weight of the polymer particles. 4. The composition of claim 1 which further comprises TiO 2 particles, wherein at least some of the polymer particles adsorb onto the surface of the TiO 2 particles. 5. The composition of claim 4 which further includes one or more components selected from the group consisting of consisting of a rheology modifier, a defoamer, a surfactant, a dispersant, an extender, a solvent, a preservative, and a coalescent.
Assignees
Inventors
Classifications
Homopolymers or copolymers of monomers containing phosphorus · CPC title
Homopolymers or copolymers of acrylic acid esters · CPC title
Homopolymers or copolymers of esters of monocarboxylic acids · CPC title
- C08F220/10Primary
Esters · CPC title
Titanium dioxide · CPC title
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- What does patent US9676932B2 cover?
- The present invention relates to a composition of a stable aqueous dispersion of polymer particles comprising structural units of a) vinyl acetate; b) a vinyl ester of a branched carboxylic acid monomer; and c) a phosphorus acid monomer. The composition of the present invention provides vinyl ester/phosphorus acid based polymer particles that improve hiding efficiency in pigmented coatings form…
- Who is the assignee on this patent?
- Cai Qiaoqiao, Chen Junyu, Dong Xiangting, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification C08F220/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 13 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).