Process for preparing aqueous dispersion of rosin-base materials
US4309338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Oct 29, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides a process for preparing an aqueous dispersion of a rosin-base material by a so-called inversion method, the process being characterized in that the dispersant is at least one member selected from the group consisting of: PA1 (a) salt of sulfonic acid represented by the formula ##STR1## wherein R.sup.1 is a hydrocarbon residue having 4 to 18 carbon atoms, m is an integer of 1 or 2, n is an integer of 4 to 25, X is hydrogen or hydroxyl, and M is a monovalent cation, and PA1 (b) salt of sulfuric acid half ester represented by the formula ##STR2## wherein R.sup.2 is hydrogen or lower alkyl, A is straight-chain or branched-chain alkylene having 2 to 3 carbon atoms, p is an integer of 4 to 25, and Q is a monovalent cation. The aqueous dispersion obtained by the process of the invention have excellent sizing effects, very high storage, mechanical and dilution stabilities, and greatly reduced foaming properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.