公开(公告)号：ZA976164B

公开(公告)日：1999-01-11

申请号：ZA976164

申请日：1997-07-11

Applicant: BASF AG

Inventor： GENZ MANFRED ,  MERGER ROLAND ,  BOLLMANN HEINZ ,  THAERIGEN RAINA ,  VOELKEL RUEDIGER ,  KRAUS RUPERT ,  POHL SIEGMUND

IPC: C08G18/77 ,  C08J9/00 ,  C08G ,  C08J

Abstract: Production of microcellular polyurethane elastomers is claimed by reacting (A) high mol. polyhydroxy compounds and optionally (B) low. mol. chain extenders and/or crosslinkers with (C) 3,3'-dimethoxy-4,4'- diisocyanato-diphenyl in presence or absence of (D) catalysts, foaming agents etc.. Preferably the polyhydroxy component (A) is of functionality 2-3 and mol. wt. 500-6,000 and is especially a difunctional polyester polyol, OH-containing polycarbonate or polyoxybutylene glycol of mol. wt. 800-3,500 while the chain extender is an alkane diol, dialkylene glycol or polyoxyalkylene glycol of mol. wt. up to 800 and the crosslinker is also of mol. wt. up to 800 and is a tri-or tetra-hydric alcohol or polyoxyalkylene polyol of functionality 3-4. Preparation of the elastomer is by: (1) first preparing a prepolymer of NCO content 2-20 wt.% by reacting (C) with (A) and optionally (B) and then reacting this prepolymer with water and optionally also (B); or (2) first reacting (C) with part of (A) and optionally also (B) and then reacting the prepolymer obtained with a mixture of water, the remainder of (A) and optionally also (B).

公开(公告)号：AU3438997A

公开(公告)日：1998-02-09

申请号：AU3438997

申请日：1997-06-30

Applicant: BASF AG

Inventor： GENZ MANFRED ,  MERGER ROLAND ,  BOLLMANN HEINZ ,  THARIGEN RAINA ,  VOELKEL RUDIGER ,  KRAUS RUPERT ,  POHL SIEGMUND

IPC: C08G18/10 ,  C08G18/42 ,  C08G18/48 ,  C08G18/66 ,  C08G18/76 ,  C08G18/77 ,  C08G18/81 ,  C08J9/00 ,  C08J9/14

Abstract: A process is disclosed for preparing microcellular polyurethane elastomers by reacting: (a) high-molecular polyhydroxyl compounds, optionally (b) low-molecular chain-lengthening and/or cross-linking agents with (c) 3,3'-dimethoxy-4,4'-diisocyanato-diphenyl and/or 4,4'-stilbene-diisocyanate in the presence or absence of (d) catalysts; (e) foaming agents; and (f) additives. Also disclosed are isocyanate prepolymers suitable for preparing these elastomers.

公开(公告)号：AT140448T

公开(公告)日：1996-08-15

申请号：AT93117851

申请日：1993-11-04

Applicant: BASF AG

Inventor： LEHRICH FRIEDHELM DR ,  POHL SIEGMUND ,  BRUCHMANN BERND DR ,  TESCH HELMUT DR ,  MINGES ROLAND DR ,  SWOBODA JOHANN DR ,  GENZ MANFRED DR ,  SCHOLZ GUENTER DR ,  STREU JOACHIM DR

IPC: C07C265/10 ,  C07C265/12 ,  C07C267/00 ,  C08G18/00 ,  C08G18/02 ,  C08G18/71 ,  C08K5/29

Abstract: The invention relates to novel 4,4'-disubstituted bis(2,6-diisopropylphenyl)carbodiimides of the formula (I) in which R is a 1-methyl-1-phenylethyl, phenoxy or tert-butyl radical, to a process for their preparation and to their use as stabilisers with respect to the hydrolytic degradation of ester group-containing products of addition and condensation polymerisation, and to the novel compounds which can be used to prepare them, namely 4-(1-methyl-1-phenylethyl)-2,6-diisopropylphenyl, 4-phenoxy-2,6-diisopropylphenyl and 4-tert-butyl-2,6-diisopropylphenyl isocyanates.

公开(公告)号：HU0303442A2

公开(公告)日：2004-01-28

申请号：HU0303442

申请日：2002-03-06

Applicant: BASF AG

Inventor： BETTENDORF CARL ,  BRUCHMANN BERND ,  PLAUMANN HEINZ ,  POHL SIEGMUND ,  REIF MARTIN ,  THIELE KAI

IPC: C07C263/10 ,  C07B61/00 ,  C07C263/20 ,  C07C265/14 ,  C08G18/76

Abstract: MDI is prepared by a process comprising the following steps: A) reaction of aniline and formaldehyde in the presence of an acid to give methylene(diphenyldiamines) and polymethylenepolyphenylenepolyamines, the molar ratio of acid to amine being not more than 0.2, B) reaction of the mixture obtained in step A) with phosgene to give methylene(diphenyl diisocyanates) and polymethylenepolyphenylene polyisocyanates, C) separation of the mixture obtained in step B) into monomeric MDI and polymeric MDI and D) separation of the monomeric MDI obtained in step C) by isolating 2,4'-MDI.

公开(公告)号：DE4442723C2

公开(公告)日：2002-10-24

申请号：DE4442723

申请日：1994-12-01

Applicant: BASF AG

Inventor： KIELHORN-BAYER SABINE ,  EICHENAUER ULRICH ,  EBERLE WOLFGANG ,  MUEHLBACH KLAUS ,  POHL SIEGMUND

IPC: C07C267/00 ,  C08K5/29 ,  C08L59/00 ,  C08L79/00 ,  D01F6/96

公开(公告)号：DE10111337A1

公开(公告)日：2002-09-12

申请号：DE10111337

申请日：2001-03-08

Applicant: BASF AG

Inventor： REIF MARTIN ,  BRUCHMANN BERND ,  POHL SIEGMUND ,  BETTENDORF CARL ,  PLAUMANN HEINZ ,  THIELE KAI

IPC: C07C263/10 ,  C07B61/00 ,  C07C263/20 ,  C07C265/14 ,  C08G18/76

Abstract: The invention relates to a method for producing MD1, comprising the following steps: A) aniline and formaldehyde are made to react in the presence of an acid to form methylene(diphenyldiamene) and polymethylene polyphenylene polyamine, the mol ratio of acid to amine being a maximum of 0.2; b) the mixture obtained in step A) is reacted with phosgene to form methylene (diphenyldiisocyanate) and polymethylene polyphenylene polyisocyanate; C) the mixture obtained in step B) is separated into monomer MDI and polymer MDI; and D) the monomer MDI obtained in step C) is separated from 2,4'- MDI.

公开(公告)号：DE59603326D1

公开(公告)日：1999-11-18

申请号：DE59603326

申请日：1996-06-21

Applicant: BASF AG

Inventor： SCHERZER DIETRICH ,  BRUCHMANN BERND ,  MINGES ROLAND ,  KELLER PETER ,  VAN PEE WILLY ,  HEIDER WOLFGANG ,  POHL SIEGMUND ,  OTTO BERNHARD ,  JACOBS PAUL ,  SEYFERT WILFRIED

IPC: C07C263/10 ,  C07C263/20 ,  C07C265/12 ,  C07C265/14

Abstract: Prodn. of mixts. of diphenylmethanedi-isocyanates and polyphenyl-polymethylene-polyisocyanates (i.e. crude MDI) with a low iodine number and a low chlorine content comprises (a) reacting the corresp. mixts. of diamines and polyamines (MDA) with phosgene in presence of inert solvent(s) at elevated temp., (b) removing excess phosgene and solvent and (c) thermal treatment of the prod.. After phosgenation (a), an effective amt. of a mixt. (I) of water and mono- or polyhydric polyoxyalkylene alcohol(s) (II) is added to the reaction mixt. in the presence or absence of phosgene.

公开(公告)号：DE4238046A1

公开(公告)日：1994-05-19

申请号：DE4238046

申请日：1992-11-11

Applicant: BASF AG

Inventor： LEHRICH FRIEDHELM DR ,  POHL SIEGMUND ,  BRUCHMANN BERND DR ,  TESCH HELMUT DR ,  MINGES ROLAND DR ,  SWOBODA JOHANN DR ,  GENZ MANFRED DR ,  SCHOLZ GUENTER DR ,  STREU JOACHIM DR

IPC: C07C265/10 ,  C07C265/12 ,  C07C267/00 ,  C08G18/00 ,  C08G18/02 ,  C08G18/71 ,  C08K5/29 ,  C08L75/04

Abstract: The invention relates to novel 4,4'-disubstituted bis(2,6-diisopropylphenyl)carbodiimides of the formula (I) in which R is a 1-methyl-1-phenylethyl, phenoxy or tert-butyl radical, to a process for their preparation and to their use as stabilisers with respect to the hydrolytic degradation of ester group-containing products of addition and condensation polymerisation, and to the novel compounds which can be used to prepare them, namely 4-(1-methyl-1-phenylethyl)-2,6-diisopropylphenyl, 4-phenoxy-2,6-diisopropylphenyl and 4-tert-butyl-2,6-diisopropylphenyl isocyanates.

公开(公告)号：HU229637B1

公开(公告)日：2014-03-28

申请号：HU0303442

申请日：2002-03-06

Applicant: BASF AG

Inventor： REIF MARTIN ,  BRUCHMANN BERND ,  POHL SIEGMUND ,  BETTENDORF CARL ,  PLAUMANN HEINZ ,  THIELE KAI

IPC: C07C263/10 ,  C08G18/76 ,  C07B61/00 ,  C07C263/20 ,  C07C265/14

公开(公告)号：DE59703555D1

公开(公告)日：2001-06-21

申请号：DE59703555

申请日：1997-06-30

Applicant: BASF AG

Inventor： GENZ MANFRED ,  MERGER ROLAND ,  BOLLMANN HEINZ ,  THAERIGEN RAINA ,  VOELKEL RUEDIGER ,  KRAUS RUPERT ,  POHL SIEGMUND

IPC: C08G18/10 ,  C08G18/42 ,  C08G18/48 ,  C08G18/66 ,  C08G18/76 ,  C08G18/77 ,  C08G18/81 ,  C08J9/00 ,  C08J9/14

Abstract: A process is disclosed for preparing microcellular polyurethane elastomers by reacting: (a) high-molecular polyhydroxyl compounds, optionally (b) low-molecular chain-lengthening and/or cross-linking agents with (c) 3,3'-dimethoxy-4,4'-diisocyanato-diphenyl and/or 4,4'-stilbene-diisocyanate in the presence or absence of (d) catalysts; (e) foaming agents; and (f) additives. Also disclosed are isocyanate prepolymers suitable for preparing these elastomers.