Aqueous polymer dispersions for the treatment of leather
US4332860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1981 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | Apr 3, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/4935
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aqueous dispersions which are suitable for the treatment of leather and have a pH of from 2 to 7 and particle diameters of from 20 to 150 nm of polymers having a T.sub..lambda.max -value below 20.degree. C. of PA1 A from 20 to 70 parts by weight of one or more acyclic conjugated dienes having from 4-9 carbon atoms; PA1 B from 10 to 40 parts by weight of acrylonitrile and/or methacrylonitrile; PA1 C from 1 to 5 parts by weight of allylsulphonic acid and/or methallyl sulphonic acid or water-soluble salts thereof; PA1 D less than 20 parts by weight of acrylic and/or methacrylic acid hydroxyalkylesters having from 2-4 carbon atoms in the hydroxyalkyl group; and PA1 E 0 to 40 parts by weight of acrylic and/or methacrylic acid alkyl esters having up to 8 carbon atoms in the alkyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.