专利号:US-5214118-A 优先权日:1990-10-05 标 题:Process for synthesis of polyestercarbonate-siloxane copolymers 发明人:HAWKINS CHRISTOPHER M; ROSENQUIST NILES R 权利人:GEN ELECTRIC 摘要:A process for synthesizing polyestercarbonate-siloxane copolymers which have a smaller concentration of low molecular weight species and greater thermal stability has been described. Essentially the process includes adding the comonomer, diacid chloride siloxane, after approximately 1/3 of the phosgene has been added, in a conventional interfacial copolymerization, (as opposed to addition at the beginning of the polymerization).
专利号:US-6548621-B1 优先权日:2001-10-25 标题 :Synthesis of poly (imide-benzoxazole) copolymer 发明人:TSAI SHIH-JUNG; HSU STEVE LIEN-CHUNG; HUANG YUAN-PIN 权利人:IND TECH RES INST 摘要:The invention provides a poly(imide-benzoxazole) (PIBO) copolymer prepared from a trimellitic anhydride halide monomer and a bis(o-diaminophenol) monomer. The PIBO copolymer is characterized by the following recurring unit: n wherein X is —O—, —S—, —C(CF 3 ) 2 —, —C(CH 3 ) 2 —, —CO—, —CH 2 —, —SO 2 —, —SO—, or deleted; and n is an integer. The PIBO copolymers of this invention are particularly useful as dielectric layers in semiconductor devices because they possess hydroxyl groups which create better adhesion to semiconductor substrates.
专利号:US-9174904-B1 优先权日:2014-07-15 标 题 :Synthesis of 2,2-bis(3-phenyl-4-hydroxyphenyl) propane (PHP) 发明人:CHANDRA GIRISH; SAIT MEERAKANI MOHAMED ALI; TANWAR AKHILESH; SHETTY SHARANKUMAR 权利人:SABIC GLOBAL TECHNOLOGIES BV 摘要:Disclosed herein are ortho aryl substituted bisphenol monomers that exhibit a lower binding energy to estradiol related receptors. The monomers are provided by the condensation of a ketone and phenol in the presence of an acid catalyst.
专利号:US-2006052532-A1 优先权日:2002-04-10 标 题 :Swellable, easily cross-linked, essentially linear polymers, and the use of the same in solid phase synthesis 发明人:RADEMANN JORG 权利人:RADEMANN JORG 摘要:The invention relates to a novel polymer compound, the use of the same and a method for solid phase synthesis using an inventive polymer compound. Said polymer compound comprises linear polymer chains of general formula [R—X]n, wherein R represents a hydrocarbon group and X represents a group comprising at least one heteroatom. The linear polymer chains are cross-linked with each other by means of linking groups.
专利号:EP-1777262-A1 优先权日:2005-10-24 标题 :Carbon nanotubes reinforced thermoplastic molding compositions and production process therefor 发明人:DUIJZINGS WIL; SUWIER DAVY ROGER; BREINER THOMAS; WARZELHAN VOLKER; NIESNER NORBERT; PEPERS MICHEL 权利人:BASF AG 摘要:The invention relates to a carbon nanotube reinforced thermoplastic molding composition. This thermoplastic molding composition is produced from a graft copolymer containing single wall carbon nanotubes and a thermoplastic polymer. The graft copolymer is produced from a soft elastomeric particulate graft base with a glass transition temperature below 0°C obtained by emulsion polymerization of a conjugated diene alone or with a small amount of a monoethylenically unsaturated monomer or of at least one C1-C18-alkyl acrylate, or of mixtures of these, upon which is grafted a vinyl aromatic monomer and acrylonitrile and optionally another monoethylenically unsaturated monomer.The synthesis of the aqueous latex of the graft copolymer is performed in the presence of a dispersion of carbon nanotubes (CNTs) in an aqueous medium. For the dispersing step of the carbon nanotubes (CNTs) in aqueous solution, a salt of an amphiphilic polymer is used.
专利号:US-5191088-A 优先权日:1991-03-11 标题 :Aromatic monoanhydride-esters 发明人:BLYAKHMAN YEFIM 权利人:CIBA GEIGY CORP 摘要:Aromatic monoanhydride-esters of the formula (I) ##STR1## wherein R 1 is ##STR2## and R 2 is hydrogen, C 1 -C 4 alkyl or --OCH 3 are useful as endcapping agents for the synthesis of multifunctional high temperature resins such as polyimides, polyimide-esters, polyimide-ethers and polyimide-amides.