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公开(公告)号：CA1274042A
公开(公告)日：1990-09-11
申请号：CA534595
申请日：1987-04-13
Applicant: BASF AG
Inventor： MARX MATTHIAS , JAEHME STREU , STREU JOACHIM
Abstract: PROCESS FOR THE PREPARATION OF POLYESTER POLYOLS A process for the preparation of polyester polyols having an acid number of less than l, a hydroxyl number of approximately 20 to about 400, and having a functionality of efficaciously 2 to 3, wherein polycarboxylic acids and/or their anhydrides and multivalent alcohols are polycondensed, preferably in the absence of common esterification catalysts, at temperatures of from about 150.degree. to 250.degree.C, optionally under reduced pressure, up to an acid number of from 20 to 5. The resulting polycondensate is then oxyalkylated per carboxyl group using from 1 to 5 moles of an alkylene oxide, for example 1,2-propylene oxide and/or preferably ethylene oxide, in the presence of at least one tertiary amine catalyst from the group consisting of N-methylimidazole, diazabicyclo¢2,2,2!octane, diazabicyclo¢5,4,,0!undec-7-ene and pentamethyldiethylenetriamine and mixtures thereof, in a quantity of from about 0.001 to 1.0 weight percent based on the weight of the polycondensate, at temperatures from about 100 to 170.degree.C and under a pressure of about 1 to 10 bar.
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Patent Agency Ranking
公开(公告)号：CA1328704C
公开(公告)日：1994-04-19
申请号：CA534204
申请日：1987-04-08
Applicant: BASF AG
Inventor： WERNER FRANK , STREU JOACHIM , MUELLER HERBERT
Abstract: PROCESS FOR THE PREPARATION OF ELASTIC, NONCELLULAR OR CELLULAR POLYURETHANE- OR POLYURETHANE-POLYUREA MOLDED ARTICLES The invention relates to a process for the preparation of elastic, noncellular or cellular polyurethane molded articles or polyurethane-polyurea molded articles through reactions of a) an organic polyisocyanate, b) a polyester polyol having a hydroxyl number of from about 25 to 100 and an acid number of less than 2, prepared through the polycondensation of organic dicarboxylic acids with at least one polyoxytetramethylene glycol having a molecular weight of from about 162 to 600, or a mixture comprised of the said polyoxytetramethylene glycols with aliphatic diols and/or polyoxyalkylene glycols having a molecular weight of from about 106 to 1000, c) a chain extending agent in the presence of d) a catalyst and, optionally, e) a blowing agent, f) an auxiliary agent and/or additive.
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公开(公告)号：CA2102821C
公开(公告)日：1998-11-03
申请号：CA2102821
申请日：1993-11-10
Applicant: BASF AG
Inventor： POHL SIEGMUND , LEHRICH FRIEDHELM , SCHOLZ GUENTER , STREU JOACHIM , TESCH HELMUT , SWOBODA JOHANN , GENZ MANFRED , BRUCHMANN BERND , MINGES ROLAND
IPC: C07C265/10 , C07C265/12 , C07C267/00 , C08G18/00 , C08G18/02 , C08G18/71 , C08K5/29
Abstract: 4,4'-disubstituted bis-(2,6-diisopropylphenyl)carbodiimides of the formula (I) (see fig. I) where R is 1-methyl-1-phenylethyl, phenoxy or tert-butyl, a process for their preparation, their use as stabilizers against hydrolytic degradation of polyaddition and polycondensation products containing ester groups, and the novel 4-(1-methyl-1-phenylethyl)-2,6-diisopropyl-, 4-phenoxy-2,6-diisopropyl- and 4-tert-butyl-2,6-diisopropylphenyl isocyanates which can be used for their preparation.
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公开(公告)号：BR9402198A
公开(公告)日：1995-03-07
申请号：BR9402198
申请日：1994-06-07
Applicant: BASF AG
Inventor： POHL SIEGMUND , LEHRICH FRIEDHELM , GENZ MANFRED , BRUCHMANN BERND , TESCH HELMUT , MINGES ROLAND , STREU JOACHIM
IPC: C07B61/00 , C07C267/00 , C07C271/20 , C07C273/18 , C07C275/14 , C07C275/24 , C07C275/26 , C07C275/40 , C08G18/02 , C08G18/28 , C08G18/66 , C08G18/79 , C08K5/29 , C08L75/04
Abstract: The subjects of the invention are novel carbodiimides and/or oligomeric polycarbodiimides having terminal isocyanate, urethane and/or urea groups, obtainable e.g. by condensation with elimination of carbon dioxide of 1,3-bis(1-methyl-1-isocyanatoethyl)benzene and thereafter optionally partial or complete reaction of the free isocyanate groups of the resulting (poly)carbodiimides with aliphatic, cycloaliphatic or araliphatic amines, alcohols and/or alkoxypolyoxyalkylene alcohols, a process for their preparation and their use as a stabiliser against the hydrolytic degradation of polyaddition and polycondensation products containing ester groups.
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公开(公告)号：ES2019315B3
公开(公告)日：1991-06-16
申请号：ES87103022
申请日：1987-03-04
Applicant: BASF AG
Inventor： HORN PETER , CHAKRABARTI SARBANANDA , BOEHME RALF , SCHMIDT HANS ULRICH , STREU JOACHIM
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公开(公告)号：CA1274041A
公开(公告)日：1990-09-11
申请号：CA535531
申请日：1987-04-24
Applicant: BASF AG
Inventor： STREU JOACHIM , STRAEHLE WOLFGANG
Abstract: PROCESS FOR THE PREPARATION OF POLYESTER POLYOLS 9 BASED ON 2-METHYL-1,4-BUTANEDIOL, WHICH ARE LIQUID AT ROOM TEMPERATURE, AND THEIR USE FOR THE PREPARATION OF PLASTIC MATERIALS This invention relates to polyester polyols which are liquid at 25.degree.C and contain units having the structure -OCH2- CH(CH3)-CH2CH20- which are bound together and have an average functionality of from about 2 to 3, a hydroxyl number of from about 25 to 300, an acid number of less than about 2, and a viscosity of from about 200 to 105 mPas at 25.degree.C. The polyols are prepared through polycondensation in the molten state, in the presence of or absence of esterification catalysts, of an aliphatic di- and/or polycarboxylic acid and/or di- and/or polycarboxylic acid anhydride and 2-methyl-1,4-butanediol or mixtures comprised of 2 methyl-1,4-butanediol and at least one linear or branched, alipahtic di- through tetravalent alcohol, which optionally contains ether bridges and has a 2-methyl-1,4-butanediol content of at least 20 weight percent based on the weight of the alcohol mixture. The polyester polyols are suited for the preparation of noncellular or cellular polyurethane plastics or polyurethane-polyurea plastics and preferably polyurethane elastomers, using the polyisocyanate addition polymerization process.
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