公开(公告)号：DE58906989D1

公开(公告)日：1994-03-24

申请号：DE58906989

申请日：1989-11-06

Applicant: BASF AG

Inventor： HORN PETER DR ,  REHMER GERD DR ,  LUTTER HEINZ-DIETER DR ,  RAMLOW GERHARD DR ,  HINZ WERNER DR ,  SCHMIDT HANS ULRICH

IPC: C08F216/14 ,  C08F218/10 ,  C08F220/28 ,  C08F220/58 ,  C08F222/20 ,  C08F226/00 ,  C08F226/06 ,  C08F290/06 ,  C08F299/02 ,  C08G18/40 ,  C08G18/62 ,  C08L75/04 ,  C09K23/52

Abstract: The novel copolymers having K values of from 5 to 80 are prepared by free-radical polymerisation of A) 20 to 80% by weight, based on the total weight of (A) and (B), of at least one olefinically unsaturated polyoxyalkylene alcohol or polyester alcohol adduct, (B) 80 to 20% by weight, based on the total weight of (A) and (B), of at least one vinyl monomer from the group comprising N-vinylformamide, -2-pyrrolidone, -2-piperidone, -2-caprolactam, -imidazole, -2-ethyleneurea and -2-propyleneurea, C) 0.05 to 40 parts by weight of glycidyl acrylate and/or glycidyl methacrylate, D) 0 to 10 parts by weight of at least one alpha , beta -monoolefinically unsaturated acid and E) 0 to 30 parts by weight of at least one olefinically unsaturated carboxamide and/or carboxylate and/or styrene, the parts by weight of (C), (D) and (E) in each case being based on 100 parts by weight of the monomers (A) and (B). The copolymers are used as assistants and/or additives, for example as dispersion and/or emulsification assistants, or as additives for improving the mechanical properties, in formulations for the preparation of polyisocyanate polyaddition products.

公开(公告)号：DE4203918A1

公开(公告)日：1993-08-12

申请号：DE4203918

申请日：1992-02-11

Applicant: BASF AG

Inventor： LUTTER HEINZ-DIETER DR ,  BRUCHMANN BERND DR ,  SPANG CLAUDIA DR ,  MINGES ROLAND DR ,  SCHERZER DIETRICH DR ,  LUGMAYR MICHAEL ,  ZSCHIESCHE RUTH DR

IPC: C08G18/10 ,  C08G18/12 ,  C08G18/40 ,  C08G18/48 ,  C08G18/65 ,  C08G18/72 ,  C08G18/76 ,  C08G101/00 ,  C08J9/02

Abstract: The invention relates to a process for the preparation of CFC-free flexible polyurethane(moulded) foams by reacting A) liquid polyisocyanate mixtures containing bonded urethane groups and containing from 20 to 30% by weight of NCO groups, themselves prepared by reacting a mixture of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates (crude MDI) with a polyether-polyol mixture having a hydroxyl number of from 120 to 25 comprising at least one polyoxypropylene glycol and at least one trifunctional polyoxypropylene polyoxyethylene polyol containing from 90 to 10% by weight of ethylene oxide units or by reacting 4,4'-diphenylmethane diisocyanate (MDI) or an MDI isomer mixture with said polyether polyol mixture to give an NCO-containing quasi-prepolymer, and diluting this quasi-prepolymer with crude MDI, with B) relatively high-molecular-weight polyhydroxyl compounds and optionally C) low-molecular-weight chain extenders and/or crosslinking agents, in the presence of D) blowing agents E) catalysts and optionally F) auxiliaries and/or additives, and to the urethane group-modified polyisocyanate mixtures (A) which can be used according to the invention.

公开(公告)号：DE4021962A1

公开(公告)日：1992-01-16

申请号：DE4021962

申请日：1990-07-10

Applicant: BASF AG

Inventor： HINZ WERNER DR ,  LUTTER HEINZ-DIETER DR ,  LEPPKES REINHARD DR

IPC: C08G65/26

Abstract: Process mixts. of polyether-polyols of very different mol.wt. (I) which are based on a starter cpd. (II) (with mol.wt. up to 400 and contg. n = 2-8 OH, SH and/or NH gps. and/or n = 1-4 prim. NH2 gps.) and involves (a) reaction of 1 mol. (II) with r = 1n-20n mols. epoxide (III) in the presence of base; (b) further alkoxylation with s = 5n-30n mols. (III), with continuous or portionwise addn. of 1-10 times the amt. of the mixt. obtd. in stage (a); and opt. (c) reaction of the polyether-polyol obtd. with a further amt. of epoxide. More specifically, 1-60 wt.% of the stage (a) prod. (IV) is sepd. and reacted with more (III) in stage (b), while adding the remaining 40-99 wt.% (IV) as above; (III) is ethylene or propylene oxide (EO or PO). USE/ADVANTAGE - Useful for the prodn. of polyesters and polyurethanes (PU). The process enables the prodn. of (I) with a wide mol. wt. distribution, as required esp. for the prodn. of PU foam with improved elasticity and low crushing strength, without using CFC blowing agents. The claims include polyurethanes produced from polyisocyanates and (I).