Process for recovering thermoplastic polymers from dispersion
    32.
    发明授权
    Process for recovering thermoplastic polymers from dispersion 失效
    从分散体中回收热塑性聚合物的方法

    公开(公告)号:US4960864A

    公开(公告)日:1990-10-02

    申请号:US358954

    申请日:1989-05-30

    CPC分类号: C08F6/16

    摘要: Recovery of thermoplastic polymer solids from dispersions thereof by coagulation and subsequent washing of the solids is improved by contacting the polymer in the coagulation stage or the washing stage or in both stages with at least one tricarboxylic acid of the formula ##STR1## wherein X is a single covalent bond, --CH.sub.2 -- or --C.sub.2 H.sub.4 -- and R is H, --OH or ##STR2##

    摘要翻译: 通过凝结和随后的固体洗涤从其分散体中回收热塑性聚合物固体,通过使聚合物在凝固阶段或洗涤阶段或两个阶段中与至少一种下式的三羧酸接触,其中X为 单共价键,-CH 2 - 或-C 2 H 4 - ,并且R为H,-OH或

    Process for the production of graft polymers
    36.
    发明授权
    Process for the production of graft polymers 失效
    生产接枝聚合物的方法

    公开(公告)号:US4426499A

    公开(公告)日:1984-01-17

    申请号:US344486

    申请日:1982-02-01

    CPC分类号: C08F265/04 C08F279/02

    摘要: This invention relates to a process for the graft polymerization of (A) from 95 to 40 parts, by weight, of at least one ethylenically unsaturated monomer in the presence of (B) from 5 to 60 parts, by weight, of a partially or completely cross-linked rubber, in which the one or more than one monomer (A) and rubber (B) in the form of a latex or of a dispersion in an organic solvent are polymerized in an aliphatic hydrocarbon as reaction medium at from 30.degree. to 100.degree. C., using a radical forming initiator, and the graft polymerization product obtained as a sedimenting suspension of particles having an average diameter of from 5 to 1,000 .mu.m is isolated.

    摘要翻译: 本发明涉及一种在(B)5〜60重量份的(B)的部分或不饱和单体的存在下(A)95重量份至40重量份的至少一种烯属不饱和单体的接枝聚合方法 完全交联的橡胶,其中一种或多种胶乳形式的单体(A)和橡胶(B)或在有机溶剂中的分散体在脂肪族烃中作为反应介质在30℃下聚合 至100℃,使用自由基形成引发剂,分离得到作为平均直径为5〜1000μm的颗粒的沉降悬浮液得到的接枝聚合产物。

    Graft polymers
    40.
    发明授权
    Graft polymers 失效
    接枝聚合物

    公开(公告)号:US4755564A

    公开(公告)日:1988-07-05

    申请号:US798893

    申请日:1985-11-18

    摘要: This invention relates to graft polymers produced from:(1) an elastomer component having glass transition temperatures below 0.degree. C. as the graft base; and(2) graft monomers corresponding to the following general formula: ##STR1## wherein R.sup.1 represents H or a C.sub.1 -C.sub.4 alkyl radical;R.sup.3 represents H, phenyl or a C.sub.1 -C.sub.8 alkyl radical;R.sup.2 represents H, a C.sub.1 -C.sub.10 alkyl or C.sub.6 -C.sub.12 aryl radical or --OR.sup.4 ; andR.sup.4 represents C.sub.1 -C.sub.8 alkyl or C.sub.6 -C.sub.12 aryl optionally substituted by alkyl groups, O-containing or N-containing groups;X represents a single bond, a C.sub.1 -C.sub.10 alkylene or C.sub.6 -C.sub.12 arylene radical, ##STR2## Y represents --O--Z--, --NH--Z--; and Z represents a C.sub.1 -C.sub.10 alkylene or C.sub.6 -C.sub.12 arylene radical; and, optionally, other olefinically unsaturated monomers.

    摘要翻译: 本发明涉及由以下物质制备的接枝聚合物:(1)玻璃化转变温度低于0℃的弹性体组分作为接枝基质; 和(2)对应于以下通式的接枝单体:其中R 1表示H或C 1 -C 4烷基; R3表示H,苯基或C1-C8烷基; R2表示H,C1-C10烷基或C6-C12芳基或-OR4; 且R 4表示任选被烷基,含O或N基团取代的C 1 -C 8烷基或C 6 -C 12芳基; X表示单键,C1-C10亚烷基或C6-C12亚芳基,Y表示-O-Z-,-NH-Z-; Z表示C1-C10亚烷基或C6-C12亚芳基; 和任选的其它烯属不饱和单体。