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    • 1. 发明申请
    • IMPACT-MODIFIED MOLDING COMPOSITION AND METHOD
    • 冲击改性成型组合物和方法
    • WO2006127223A1
    • 2006-11-30
    • PCT/US2006/016988
    • 2006-05-03
    • GENERAL ELECTRIC COMPANYDHAWAN, SandeepBERZINIS, Albin, PeterKALYANARAMAN, Viswanathan
    • DHAWAN, SandeepBERZINIS, Albin, PeterKALYANARAMAN, Viswanathan
    • C08F291/02C08F265/04C08F285/00
    • C08F285/00
    • A method is disclosed for preparing an acrylic-styrene-acrylonitrile (ASA) resin, which comprises the steps of: (a) polymerizing a mixture comprising at least one acrylate monomer and at least one crosslinking agent to form a rubber substrate, followed by (b) polymerizing a mixture of monomers in the presence of the rubber substrate, at least one of which monomers is selected from the group consisting of vinyl aromatic monomers and at least one of which monomers is selected from the group consisting of monoethylenically unsaturated nitrile monomers, and optionally followed by (c) polymerizing one or more monomers in at least one subsequent stage in the presence of the rubber substrate from (b), wherein the one or more monomers comprise at least one monomer selected from the group consisting of (C 1 -C 12 ) alkyl- and aryl-(meth)acrylate monomers; wherein the amount of unreacted crosslinking agent remaining in the rubber substrate before step (b) is less than 5.6 micromoles per gram based on the dry weight of the rubber substrate. The invention also relates to a molding composition comprising an ASA resin comprising an elastomeric phase derived from a rubber substrate comprising structural units derived from at least one crosslinking agent; wherein the rubber substrate comprises less than 5.6 micromoles of unreacted crosslinking agent per gram of rubber substrate based on dry weight of the rubber substrate. Articles comprising said ASA resin and/or made from said molding composition are also disclosed.
    • 公开了一种用于制备丙烯酸 - 苯乙烯 - 丙烯腈(ASA)树脂的方法,其包括以下步骤:(a)使包含至少一种丙烯酸酯单体和至少一种交联剂的混合物聚合以形成橡胶基材,然后( b)在橡胶基质的存在下聚合单体的混合物,其中至少一种单体选自乙烯基芳族单体,并且其中至少一种单体选自单烯属不饱和腈单体, (c)在(b)中在橡胶基质存在下的至少一个后续阶段中聚合一种或多种单体,其中所述一种或多种单体包含至少一种选自(C 1〜 (甲基)丙烯酸烷基酯和/或(甲基)丙烯酸酯单体; 其中在步骤(b)之前残留在橡胶基材中的未反应交联剂的量相对于橡胶基材的干重小于5.6微摩尔/克。 本发明还涉及包含ASA树脂的模塑组合物,其包含衍生自橡胶基质的弹性体相,其包含衍生自至少一种交联剂的结构单元; 其中所述橡胶基材基于所述橡胶基材的干重,每克橡胶基材包含小于5.6微摩尔的未反应交联剂。 还公开了包含所述ASA树脂和/或由所述模塑组合物制成的制品。
    • 4. 发明申请
    • METHOD FOR THE MANUFACTURE OF A POLY(IMIDE) PREPOLYMER POWDER AND VARNISH, POLY(IMIDE) PREPOLYMER POWDER AND VARNISH PREPARED THEREBY, AND POLY(IMIDE) PREPARED THEREFROM
    • 制备聚(酰亚胺)预聚物粉末和清漆,聚(酰亚胺)预聚物粉末和由其制备的清漆以及由其制备的聚(酰亚胺)的方法
    • WO2018026806A1
    • 2018-02-08
    • PCT/US2017/044884
    • 2017-08-01
    • SABIC GLOBAL TECHNOLOGIES B.V.KALYANARAMAN, Viswanathan
    • KALYANARAMAN, ViswanathanYAMAGUCHI, Norimitsu
    • C08G73/10
    • C08G73/1032C08G73/1028C08G73/1046C08J5/24
    • A method for manufacturing a poly(imide) prepolymer powder includes combining a bisanhydride powder or organic diamine and a solvent comprising an alcohol, a water-soluble ketone or water to form a mixture, adding an organic diamine or bisanhydride powder to the mixture to form a poly(imide) prepolymer, and removing the solvent to provide the poly(imide) prepolymer powder. A method for manufacturing a poly(imide) prepolymer varnish includes combining a bisanhydride powder or organic diamine and a solvent comprising an alcohol, a water-soluble ketone or water to form a mixture, and adding an organic diamine or bisanhydride powder to the mixture to form a poly(imide) prepolymer. The method of manufacturing the varnish further includes at least one of adding an effective amount of a secondary or tertiary amine to solubilize the poly(imide) prepolymer powder, heating the mixture to a temperature effective to provide the varnish, or agitating the mixture to provide the varnish. The poly(imide) prepolymer powder and varnish can have a residual organic diamine content of less than or equal to 1000 ppm. A poly(imide) polymer prepared from the prepolymer powder or varnish is also disclosed.
    • 用于制造聚(酰亚胺)预聚物粉末的方法包括将二酸酐粉末或有机二胺与包含醇,水溶性酮或水的溶剂混合以形成混合物,将有机二胺 或二氢化铝粉末混合以形成聚(酰亚胺)预聚物,并除去溶剂以提供聚(酰亚胺)预聚物粉末。 制备聚酰亚胺预聚物清漆的方法包括将二酸酐粉末或有机二胺与包含醇,水溶性酮或水的溶剂混合以形成混合物,并将有机二胺或二酐粉末加入到混合物中 形成聚(酰亚胺)预聚物。 制造清漆的方法进一步包括添加有效量的仲或叔胺以溶解聚(酰亚胺)预聚物粉末,将混合物加热至有效提供清漆的温度或搅拌混合物以提供 清漆。 聚(酰亚胺)预聚物粉末和清漆可具有小于或等于1000ppm的残余有机二胺含量。 还公开了由预聚物粉末或清漆制备的聚(酰亚胺)聚合物。