Aqueous polymeric dispersions, paper coating compositions and coated paper articles made therewith
US4258104A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1979 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Apr 27, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31906
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lightweight coated paper articles having a desirable combination of properties are obtained through the use of coating compositions employing as the binder component thereof certain novel polymeric dispersions which comprise a major proportion on a dry basis of an alkali insoluble polymer and a minor proportion (e.g., from about 0.5 to about 25 weight percent on a dry basis based upon the alkali insoluble polymer) of certain alkali soluble polymers. Exemplary of the alkali insoluble polymers employed herein are both the carboxylated and noncarboxylated versions of known addition polymerized synthetic polymers having a glass transition temperature of about 50.degree. C. or less. Exemplary of the alkali soluble polymers employed herein are synthetic addition polymers comprising (in polymerized form and in weight percent based on such polymer) from about 40 to about 90 percent of a vinyl ester of a carboxylic acid (e.g., vinyl acetate, vinyl propionate, etc.); from about 5 to about 55 percent of the nitrile or a C.sub.1 -C.sub.8 alkyl ester of a monoethylenically unsaturated carboxylic acid; and from about 5 to about 15 percent of a monoethylenically unsaturated carboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.