C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 267/00 (2006.01) C07D 229/00 (2006.01) C08G 18/70 (2006.01) C08G 18/79 (2006.01) C08J 9/00 (2006.01)
Patent
CA 2069384
The present invention relates to liquid storable organic isocyanates containing carbodiimide and/or uretone imine groups prepared by (a) partially carbodiimidizing isocyanate groups of an organic isocyanate with catalysts of the phospholine type, and (b) terminating the carbodiimidization reaction by the addition of a silylated acid corresponding to the formula X-[Si(CH3)3]n in which X represents the neutral acid residue obtained by removal of the acidic hydrogen atoms from an n-basic acid having a pK a value of at most 3, other than a hydrohalic acid, and n is an integer of 1 to 3. The invention further relates to the use of the liquid polyisocyanate mixtures according to the invention for the preparation of polyurethane plastics, preferably polyurethane foams, having improved burning behavior.
Scholl Hans Joachim
Welte Rainer
Aktiengesellschaft Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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