Manufacture of heat-stable brominated oligomers of monovinyl-aromatic
compounds
    3.
    发明授权
    Manufacture of heat-stable brominated oligomers of monovinyl-aromatic compounds 失效
    制备单乙烯基芳族化合物的热稳定溴化低聚物

    公开(公告)号:US4074032A

    公开(公告)日:1978-02-14

    申请号:US705278

    申请日:1976-07-14

    CPC分类号: C07C17/12 C08F8/22

    摘要: A process for the manufacture of heat-stable, brominated oligostyrenes by brominating selectively hydrogenated oligostyrenes in halogenated solvents in the presence of Lewis acids at from -25.degree. to +20.degree. C. The brominated oligomers are highly heat-stable and can be processed, by themselves or as components of mixtures with other thermoplastics, to give various shaped articles.

    摘要翻译: 在-25℃至+20℃的路易斯酸存在下,通过在卤代溶剂中溴化选择性氢化的低聚异丁烯来制造热稳定的溴化低聚物的方法。溴化低聚物是高度热稳定的, 自身或作为与其他热塑性塑料的混合物的组分,以产生各种成型制品。

    Self-extinguishing thermoplastic molding compositions
    6.
    发明授权
    Self-extinguishing thermoplastic molding compositions 失效
    自熄性热塑性成型组合物

    公开(公告)号:US4200702A

    公开(公告)日:1980-04-29

    申请号:US912358

    申请日:1978-06-05

    摘要: Thermoplastic molding compositions based on rubber-modified styrene-acrylonitrile copolymers containing a halogenated styrene oligomer as the effective flame-proofing agent which is sufficiently heat-stable, does not interfere with processing on conventional machinery, does not corrode or cause coatings on such machinery, and has virtually no adverse effect on the impact strength of the polymers. The flameproofing agent as a rule has a degree of polymerization of from 3 to 200 and can be incorporated into the polymer by conventional methods; the polymer may or may not contain additional synergistic agents and processing auxiliaries, which are incorporated in the conventional manner and in the conventional amounts.

    摘要翻译: 含有卤代苯乙烯低聚物作为充分热稳定性的有效阻燃剂的橡胶改性苯乙烯 - 丙烯腈共聚物的热塑性模塑组合物不影响常规机械的加工,不会在这种机械上腐蚀或引起涂层, 并且对聚合物的冲击强度几乎没有不利影响。 通常防火剂的聚合度为3〜200,可以通过常规方法加入到聚合物中; 聚合物可以包含或可以不含有以常规方式和常规量掺入的其它协同剂和加工助剂。

    Method for the continuous production of thermoplastic molding materials
    8.
    发明授权
    Method for the continuous production of thermoplastic molding materials 失效
    连续生产热塑性成型材料的方法

    公开(公告)号:US06399703B1

    公开(公告)日:2002-06-04

    申请号:US09582879

    申请日:2000-07-06

    IPC分类号: C08F29700

    摘要: A process for preparing impact-modified styrene polymers (HIPS) omprises anionic polymerization of styrene in the presence of a rubber in one or more polymerization reactors in succession. The rubber is prepared in solution in an immediately upstream process. The heat of polymerization is utilized to remove the solvent for the rubber, this solvent having a boiling point lower than those of styrene and ethylbenzene, from at least one of the polymerization reactors via distillation with distillative cooling, and the solvent is reintroduced into the process of rubber preparation.

    摘要翻译: 制备冲击改性苯乙烯聚合物(HIPS)的方法在连续的一个或多个聚合反应器中在橡胶存在下进行苯乙烯的阴离子聚合。 橡胶在紧密上游过程中在溶液中制备。 使用聚合热来除去溶剂,该溶剂的沸点低于苯乙烯和乙苯的溶剂,来自至少一个聚合反应器通过蒸馏蒸馏冷却,并将溶剂重新引入该方法 的橡胶制剂。

    Preparation of rubber-modified molding materials from reaction mixtures
containing derivatives of acrylamides or of methacrylamides
    10.
    发明授权
    Preparation of rubber-modified molding materials from reaction mixtures containing derivatives of acrylamides or of methacrylamides 失效
    由含有丙烯酰胺或甲基丙烯酰胺衍生物的反应混合物制备橡胶改性的成型材料

    公开(公告)号:US5886105A

    公开(公告)日:1999-03-23

    申请号:US836318

    申请日:1997-05-12

    CPC分类号: C08F265/04 C08L51/06

    摘要: In the preparation of a rubber-modified molding material, in a first stage, a first mixture (A) contains at least one alkyl acrylate or methacrylate (a) of the formula (I) ##STR1## where R.sup.1 is hydrogen or methyl and R.sup.2 is alkyl of 1 to 32 carbon atoms, a compound (b) of the formula (II) ##STR2## where R.sup.3 is hydrogen or methyl, R.sup.4 is hydrogen or alkyl of 1 to 8 carbon atoms, R.sup.5 is hydrogen or methyl and R.sup.6 is hydrogen or alkyl of 1 to 10 carbon atoms, preferably hydrogen, and, if required, a first monomer (c) or a plurality thereof is polymerized with free radicals to give a rubber (B),in a second stage, the resulting rubber (B) is mixed with a second monomer (d) or with a plurality thereof, preferably dissolved or swollen therein, to form a second mixture (C), andin a third stage, the second mixture (C) formed by mixing is polymerized with free radicals to give the rubber-modified molding material (D).

    摘要翻译: PCT No.PCT / EP95 / 04477 371日期1997年5月12日 102(e)日期1997年5月12日PCT提交1995年11月14日PCT公布。 出版物WO96 / 15168 日期1996年5月23日在橡胶改性成型材料的制备中,在第一阶段中,第一混合物(A)含有至少一种式(I)的丙烯酸烷基酯或甲基丙烯酸烷基酯(a)(I)其中 R1是氢或甲基,R2是1至32个碳原子的烷基,式(II)的化合物(b)R4是氢或1至8个碳原子的烷基,R5是氢或甲基,R6是氢或烷基 1至10个碳原子,优选为氢,如果需要,第一单体(c)或其多个与自由基聚合以得到橡胶(B),在第二阶段中,所得橡胶(B)为 与第二单体(d)或其多个混合,优选在其中溶解或溶胀以形成第二混合物(C),并且在第三阶段中,通过混合形成的第二混合物(C)与自由基聚合, 得到橡胶改性成型材料(D)。