(19) | |
| (11) | EP 0 228 879 A3 |
(12) | EUROPEAN PATENT APPLICATION |
(88) | Date of publication A3: | | 12.07.1989 Bulletin 1989/28 |
(43) | Date of publication A2: | | 15.07.1987 Bulletin 1987/29 |
(22) | Date of filing: 18.12.1986 |
| (51) | International Patent Classification (IPC)4: C08F 2/24 |
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(84) | Designated Contracting States: | | AT BE CH DE ES FR GB IT LI NL SE |
(30) | Priority: | 27.12.1985 JP 295187/85 29.01.1986 JP 17654/86 30.05.1986 JP 125343/86 25.08.1986 JP 198694/86
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(71) | Applicant: LION CORPORATION | | Sumida-ku
Tokyo (JP) |
| (72) | Inventors: | | - Morita, Hiroshi
Chiba-shi
Chiba (JP) - Hirota, Eiichi
Funabashi-shi§Chiba (JP) - Ishizaki, Yasuo
Katsushika-ku
Tokyo (JP)
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(74) | Representative: Adams, William Gordon et al | | RAWORTH, MOSS & COOK
36 Sydenham Road Croydon
Surrey CR0 2EF Croydon
Surrey CR0 2EF (GB) |
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(54) | Process for production of ultrafine polymer latex |
(57) A ultrafine crosslinked polymer latex having a three-dimensional network structure is produced from the emulsion polymerization of (i) an ethylenically unsaturated monomer and an unsaturated monomer having a reactive functional group in the presence of a betaine ester emulsifier or (ii) an ethylenically unsaturated monomer and, optionally, an unsaturated monomer having a reactive functional group in the presence of a polyoxyalkylene ethylenically unsaturated carboxylic acid polyester emulsifier and, optionally, a betaine ester emulsifier.