(19)
(11)EP 0 221 412 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
22.03.1989 Bulletin 1989/12

(43)Date of publication A2:
13.05.1987 Bulletin 1987/20

(21)Application number: 86114307.1

(22)Date of filing:  16.10.1986
(51)International Patent Classification (IPC)4C08F 283/06, C08F 299/02, C08G 18/63
(84)Designated Contracting States:
BE DE ES FR GB IT

(30)Priority: 28.10.1985 US 791873

(71)Applicant: BASF Corporation
Parsippany, NJ 07054 (US)

(72)Inventors:
  • Ramlow, Gerhard, Dr.
    D-6940 Weinheim (DE)
  • Heyman, Duane Allan
    Monroe Michigan 48161 (US)
  • Grace, Oscar M.
    Troy Michigan 48098 (US)

(74)Representative: Karau, Wolfgang, Dr. et al
BASF Aktiengesellschaft, Patentabteilung ZDX - C 6
67056 Ludwigshafen
67056 Ludwigshafen (DE)


(56)References cited: : 
  
      


    (54)Process for the preparation of graft polymer dispersions and flame-retardant polyurethane foams


    (57) Graft polymer dispersions in polyoxyalkylene polyether polyols are employed together with flame retardant compounds to prepare flame retardant polyurethane foams. The polymer dispersions employ less than 0.1 mole of induced unsaturation per mole of polyol mixture. Processes for the preparation of these polymer dispersions employ fumarate derived polyetherester polyols or polyetherester polyols prepared by reacting a polyoxyalkylene polyether polyol with a compound selected from the group consisting of maleic acid maleic anhydride and fumaric acid and an alkylene oxide in the presence of salts and oxides of divalent metals. The polymer dispersions are prepared in the presence of a reaction moderator and employ 50 weight percent or more of acrylonitrile.





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