公开(公告)号：JPH06329748A

公开(公告)日：1994-11-29

申请号：JP9264094

申请日：1994-04-28

Applicant: BASF AG

Inventor： PEETAA HORUN ,  BUERUNAA HINTSU ,  RUUTOBUIHI YUNGU

IPC: C08G18/08 ,  C08G18/00 ,  C08G18/22 ,  C08G18/30 ,  C08G18/32 ,  C08G18/48 ,  C08G18/50 ,  C08G18/65 ,  C08G18/66 ,  C08G101/00 ,  C08J9/00

Abstract: The invention relates to a process for the production of polyurethane foams, preferably semirigid polyurethane foams, having an improved foam structure by reacting a) organic and/or modified organic polyisocyanates with b) polyhydroxyl compounds having at least 2 reactive hydrogen atoms and c) crosslinking agents comprising at least one polyoxyalkylene polyol having a mean functionality of 3 to 8 and a hydroxyl number of from 200 to 1300 ppm, and having an alkali ion content of from 150 to 1200 ppm, in the presence of d) blowing agents, e) optionally catalysts, f) inorganic and/or organic acids as additive and g) optionally auxiliaries.

公开(公告)号：JPH08208797A

公开(公告)日：1996-08-13

申请号：JP27094395

申请日：1995-10-19

Applicant: BASF AG

Inventor： PEETAA HORUN ,  RUUTOBUIHI YUNGU ,  HAARARUTO RARUBITSUHI ,  RORUFU REPUKIYUHIYAA ,  GEERUHARUTO REERU

IPC: C08G18/50 ,  C08G65/26

Abstract: The prodn. of polyurethane (PU) foam comprises reacting (a) polyisocyanate(s); with (b) high-mol. wt. polyol(s) with at least two reactive H atoms, comprising (B1) polyoxyalkylene-polyol(s) with an OH no. of 30-500, obtd. by alkoxylating N,N'-bis(3-aminopropyl)-ethylenediamine, tripropylene-tetramine and/or tetrapropylene-pentamine with alkene oxide(s); and opt. (c) low-mol wt. chain extenders and/or crosslinkers; in the presence of (d) blowing agents. Also claimed are polyols (b1) obtd. as above.