会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Process for the production of a cast sheet based on thermoplastic resin
    • 用于生产基于热塑性树脂的流延片的方法
    • US5494973A
    • 1996-02-27
    • US370237
    • 1995-01-09
    • Philippe HeimPatrice Gaillard
    • Philippe HeimPatrice Gaillard
    • B29C39/02B29K33/04B29L7/00C08F2/00C08F2/02C08F291/02C08L101/00C08F257/02C08F265/06
    • C08F291/02
    • In a first step of this process an elastomer latex is prepared in aqueous emulsion in the presence of at least one ionic surfactant and at least one ethylenically unsaturated monomer; then in a second step at least one vinyl monomer, which is insoluble in water or sparingly soluble in water, is added to the latex thus obtained and the ionic charges introduced by the said latex are neutralised by adding to the mixture of latex and monomer at least one transfer agent carrying ionic charges opposite to those of the surfactant used in the first step, in order to effect the transfer of particles of the latex into the vinyl monomer; then in a third step the aqueous phase is separated from the organic phase comprising the latex and the vinyl monomer; and in a fourth step the bulk polymerisation of the organic phase is carried out in such a way as to obtain the cast sheet after cooling and release from the mould.
    • 在该方法的第一步中,在至少一种离子表面活性剂和至少一种烯键式不饱和单体的存在下,在水乳液中制备弹性体胶乳; 然后在第二步骤中,将至少一种不溶于水或微溶于水的乙烯基单体加入到由此获得的胶乳中,由所述胶乳引入的离子电荷通过向胶乳和单体的混合物中加入 至少一个转运剂携带与第一步骤中使用的表面活性剂相反的离子电荷,以实现将胶乳颗粒转移到乙烯基单体中; 然后在第三步骤中,将水相与包含胶乳和乙烯基单体的有机相分离; 并且在第四步中,有机相的本体聚合以这样的方式进行,以便在冷却和从模具中释放之后获得流延片。
    • 10. 发明授权
    • Thermoplastic elastomers having improved heat resistance comprising
conjugated diene/methyl methacrylate block copolymers
    • 具有改进的耐热性的热塑性弹性体包括共轭二烯/甲基丙烯酸甲酯嵌段共聚物
    • US5476904A
    • 1995-12-19
    • US158395
    • 1993-11-29
    • Philippe HeimBruno VuilleminPhilippe TeyssiePhilippe BayardJinshan Wang
    • Philippe HeimBruno VuilleminPhilippe TeyssiePhilippe BayardJinshan Wang
    • C08F297/00C08F297/02C08L53/00C09J153/00C08F295/00
    • C08L53/00C08F297/026C09J153/00
    • Thermoplastic, elastomeric, conjugated diene (e.g., butadiene)/methyl methacrylate block copolymers having elevated Tg and improved impact strength, well suited as polymer impact strength-modifiers and for conversion into pressure-sensitive adhesives, are prepared by (a) anionically polymerizing a conjugated diene monomer in an apolar solvent medium to provide a living polydiene, (b) next adding an alkali metal alkoxyalcoholate ligand to the medium comprising the living polydiene thus formed, (c) block copolymerizing the step (b) living polydiene with methyl methacrylate comonomer to provide a living copolymer, and (d) reacting the step (c) living copolymer with at least one protonic compound, e.g., water, alcohol and/or acid, and completing the polymerization thereof, with the proviso that polymerization of the conjugated diene and the methyl methacrylate comonomers is strictly carried out in the apolar solvent medium, in particular in toluene, benzene or ethylbenzene.
    • 通过(a)阴离子聚合一种(a)阴离子聚合的方法制备具有Tg和提高的冲击强度的热塑性弹性体,共轭二烯(例如丁二烯)/甲基丙烯酸甲酯嵌段共聚物,非常适合作为聚合物冲击强度改性剂和用于转化成压敏粘合剂 共轭二烯单体在非极性溶剂介质中提供活性聚二烯,(b)接下来在包含如此形成的活性聚二烯的介质中加入碱金属烷氧基醇化物配体,(c)将活性聚二烯与甲基丙烯酸甲酯共​​聚单体嵌段共聚 提供活性共聚物,和(d)使活性共聚物与至少一种质子化合物例如水,醇和/或酸反应并完成其聚合反应,条件是共轭二烯的聚合反应 甲基丙烯酸甲酯共​​聚单体严格在非极性溶剂介质中进行,特别是在甲苯,苯或乙苯中。