(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

(21)Application number: 86309935.4

(22)Date of filing:  18.12.1986
(51)International Patent Classification (IPC)4C08F 2/24
(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

(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)

(74)Representative: Adams, William Gordon et al
RAWORTH, MOSS & COOK 36 Sydenham Road
Croydon Surrey CR0 2EF
Croydon Surrey CR0 2EF (GB)


(56)References cited: : 
  
      


    (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.





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