CAS: 129-64-6; (3Ar,4S,7R,7As)-Rel-3A,4,7,7A-Tetrahydro-4,7-Methanoisobenzofuran-1,3-Dione

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2746-19-2 826-62-0 25134-21-8

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CAS号108-31-6 顺酐 | CAS号542-92-7 环戊二烯 | CAS号129-64-6 降冰片烯二酸酐 | CAS号3853-88-1 5-降冰片烯-2,3-二羧酸 | CAS号108946-69-6 (3aS,4S,7R)-3,3... | CAS号39762-43-1 3,4-Bis(trimeth... | CAS号77-73-6 二聚环戊二烯 | CAS号2746-19-2 顺-5-降冰片烯-外型-2,3-二甲酸酐 | CAS号142-29-0 环戊烯 | CAS号3853-88-1 5-降冰片烯-2,3-二羧酸 | CAS号3786-91-2 顺式-1,2,3,4-环戊烷四羧酸 | CAS号36897-94-6 5-降冰片烯-2,3-二羧酸一甲酯 | CAS号108-31-6 顺酐 | CAS号2746-19-2 顺-5-降冰片烯-外型-2,3-二甲酸酐 | CAS号542-92-7 环戊二烯 | CAS号13303-36-1 5,6-dimethyl-3a... | CAS号88330-29-4 3-内双环氨基[2.2.1]-... | CAS号129-64-6 降冰片烯二酸酐 | CAS号699-95-6 5-降冰片烯-2-外,3-外-二甲醇

专利信息

专利号:WO-2009135600-A1
优先权日:2008-05-07
标题:Catalysts for the synthesis of polyurethanes
发明人：LINDNER STEFAN; BAHNMUELLER STEFAN; SCHMIDT AXEL; WEIKARD JAN; BUCHMEISER MICHAEL; BANTU BHASKER; FRIEDERICHS WOLFGANG; KRAUSE JENS; REITER STEPHAN
权利人:BAYER MATERIALSCIENCE AG; LINDNER STEFAN; BAHNMUELLER STEFAN; SCHMIDT AXEL; WEIKARD JAN; BUCHMEISER MICHAEL; BANTU BHASKER; FRIEDERICHS WOLFGANG; KRAUSE JENS; REITER STEPHAN
摘要:The invention relates to novel catalysts for the synthesis of polyurethanes, represented by general formula (I) or (II), or compounds obtained by reacting a metal salt of the metals magnesium, calcium, yttrium, lanthanum, titanium, zirconium, manganese, iron, cobalt, zinc, aluminium, tin, comprising an anion from the group fluoride, chloride, bromide, sulphonate, trifluoromethanesulphonate, methanesulphonate, benzolsulphonate, para-toluenesulphonate, carboxy-C1-C10-alkyl, carboxy-C3-C10-cycloalkyl, carboxy- C2-C10-alkenyl, C1-C10-alkoxy, acetylacetonate, trifluoroacetlyacetonate or hexafluoroacetylacetonate, with N-heterocyclic compounds of general structure I; or with N-heterocyclic compounds of general structure II; or with N-heterocyclic compounds of general structure III.

专利号:US-5831103-A
优先权日:1992-10-20
标 题:Halogen-magnesium-aluminum hydridohalides, methods for their synthesis and their use as reducing agents
发明人：KNOTT WILFRIED
权利人:GOLDSCHMIDT AG TH
摘要:Halogen magnesium aluminum hydridohalides of the general formula[Mg2X3(ether)y]+[AlH4-nXn]-wherein X is chlorine, bromine or iodine, y is a number from 0 to 6, n is a number from 1 to 3 and ether is an aliphatic or cylcoaliphatic ether with 2 to 30 carbon atoms, with the exception of t-butyl ether, with a dipole moment>0.5 Debye and a melting point of<0 DEG C. are prepared. The invention furthermore relates to a method for the synthesis of these compounds and to a method of reducing functional organic compounds utilizing the inventive compounds.

专利号:US-5041527-A
优先权日:1988-05-16
标题 :Dimer for synthesis of high performance polymer matrix composites
发明人：RIEL FRANK J; VUONG TUYET T
权利人:ROHR INDUSTRIES INC
摘要:An improved synthesis for PMR-type polyimides, including first preparing a dimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'-methylenedianiline. This dimer is then reacted with the dimethyl ester of 3,3',4,4'-benzophenonetetracarboxylic acid and 4,4'-methylenedianiline. The resulting polyimide prepolymer exhibits superior physical properties and is substantially free of the undesired trimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'-methylenedianiline.

专利号:US-5041528-A
优先权日:1989-07-25
标 题 :New dimer for synthesis of high performance polymer matrix composites
发明人：RIEL FRANK J; VUONG TUYET; DELANEY EDWARD A
权利人:ROHR INDUSTRIES INC
摘要:An improved synthesis for PMR-type polyimides, including first preparing a dimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'methylenedianiline. This dimer is then reacted with the reaction product of the dimethyl ester (or dianhydride) of 3,3', 4,4'-benzophenonetetracarboxylic acid and 4,4'-methylenedianiline. The resulting polyimide prepolymer exhibits superior physical properties and is substantially free of the undesired trimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'-methylenedianiline. When this dimer is reacted with 3,3', 4,4'-benzophenonetetracarboxylic acid dianhydride methylenedianiline amic acid mixture, the resulting polyimide prepolymer exhibits superior physical properties.

专利号:US-5041526-A
优先权日:1988-05-16
标 题:Dimer for synthesis of high performance polymer matrix composites
发明人：RIEL FRANK J; VUONG TUYET; DELANEY EDWARD A
权利人:ROHR INDUSTRIES INC
摘要:An improved synthesis for PMR-type polyimides, including first preparing a dimer of 5-norbornene-2,3-dicarboxylic acid, or acid ester or anhydride and 4,4'methylene dianiline. This dimer is then reacted with one of the following: n 1. the reaction product of a primary aromatic diamine and an aromatic dianhydride. n 2. an aromatic dianhydride. n 3. a mixture of a primary aromatic diamine and an aromatic dianhydride, or an ester of an aromatic tetraacid or an aromatic tetraacid. n The resulting polyimide prepolymer exhibits superior physical properties and is substantially free of undesired impurities and unreacted 4,4'-methylene dianiline.

专利号:US-2024052097-A1
优先权日:2021-02-08
标题 :Synthesis of peg-based thiol-norbornene hydrogels with tunable hydroylitic degradation properties
发明人：LIN CHIEN-CHI; LIN FANG-YI
权利人:UNIV INDIANA TRUSTEES
摘要:Methods for synthesizing a hydrogel having tunable hydrolylic degradation kinetics according to certain embodiments include synthesizing a norborene-functionalized polyethylene glycol macromer having an ester linkage between a polyethylene glycol domain of the macromer and a norbornene domain of the macromer and having a carboxyl group on the norbornene; and reacting a quantity of such macromers with a quantity of dithiol molecules by an ultraviolet-initiated photo-gelation reaction to yield a hydrogel. Such macromers and such hydrogels form additional aspects of the disclosure, as do a wide variety of methods for tuning and for using such hydrogels.