Process for preparing a thermosetting aqueous polymer emulsion using radiation
US4139437A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 18, 1978 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Apr 18, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F291/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is, herein, disclosed for preparing a thermosetting aqueous polymer emulsion comprising; PA1 (1) dispersing a monomer mixture of 90.0 - 99.9 wt % of a radical polymerizable hydrophobic ethylenic unsaturated monomer having an ethylenic unsaturated bond in its molecule and 0.1 - 10.0 wt % of a radical polymerizable crosslinkable monomer having more than two ethylenic unsaturated bonds in its molecule in water in which a specific amount of surface active agent is dissolved to form a dispersion. PA1 (2) irradiating the dispersion with an ionizing radiation to effect the first stage emulsion polymerization. PA1 (3) adding a monomer mixture of 52.0 - 97.0 wt % of the radical polymerizable hydrophobic ethylenic unsaturated monomer, 2.5 - 40.0 wt % of a radical polymerizable ethylenic unsaturated monomer having a hydroxyl group and 0.5 - 8.0 wt % of a radical polymerizable ethylenic unsaturated monomer having a carboxyl group to the first stage polymer emulsion in the range of 1/9 - 6/4 parts by weight on the basis of the total amount of the unsaturated ethylenic unsaturated monomers used in the first stage emulsion polymerization. PA1 (4) irradiating with an ionizing radiation t…
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