Small particle size non-surface active protective colloid-stabilized latexes derived from monomers of high aqueous phase grafting tendencies
US4801643A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Mar 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/896
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are aqueous polyacrylate dispersions, i.e., aqueous latex dispersions of acrylate polymers, having improved rheological and stability characteristics, prepared by polymerization of acrylic esters, methacrylic esters and mixtures thereof in the presence of, by weight of the total monomer content, (a) from about 0.05 to about 5% of at least one non-surface active protective colloid, (b) from about 0.01 to 1% of at least one or more initiators selected from the group consisting of azo based initiators and organo-soluble, water-insoluble peroxide initiators, and (c) greater than 0.01% to about 0.05% of a water-soluble peroxide initiator. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.