Pigment dispersions containing hydroxylated AB-block polymer dispersant
US5859113A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jul 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A pigment dispersion useful for forming coating compositions containing dispersed pigment, a carrier liquid and an AB-block polymer dispersant (binder); PA1 the AB block polymer has a number average molecular weight of about 5,000-20,000 and contains 20-80% by weight of a polymeric A segment and correspondingly 80-20% by weight of a polymeric B segment; wherein PA1 the polymeric A segment of the block polymer is of polymerized glycidyl (meth)acrylate monomers reacted with an acid from the group of aromatic carboxylic acids or aliphatic carboxylic acids; and PA1 the B segment is of polymerized alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, hydroxy alkyl (meth)acrylate monomers having about 1-4 carbon atoms in the alkyl group; and wherein the weight ratio of pigment to binder in the dispersion is about 1/100-200/100.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.