公开(公告)号：DE59510310D1

公开(公告)日：2002-09-12

申请号：DE59510310

申请日：1995-10-14

Applicant: BASF AG

Inventor： HORN DR ,  JUNG LUDWIG ,  LARBIG DR ,  LEBKUECHER DR ,  LEHR GERHARD

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.

公开(公告)号：DE59404858D1

公开(公告)日：1998-02-05

申请号：DE59404858

申请日：1994-05-02

Applicant: BASF AG

Inventor： HORN PETER DR ,  HINZ WERNER DR ,  JUNG LUDWIG

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.