Method for sizing paper using hydrolyzed homopolymers or copolymers of
meta- or para- isopropenyl-.alpha.,.alpha.-dimethylbenzylisocyanate
    3.
    发明授权
    Method for sizing paper using hydrolyzed homopolymers or copolymers of meta- or para- isopropenyl-.alpha.,.alpha.-dimethylbenzylisocyanate 失效
    使用水解的均聚物或间 - 或对 - 异丙烯基-α,α-二甲基苄基异氰酸酯的共聚物来调整纸张的方法

    公开(公告)号:US4547265A

    公开(公告)日:1985-10-15

    申请号:US499942

    申请日:1983-06-01

    IPC分类号: C08F12/28 D21H17/45 D21H3/48

    CPC分类号: C08F12/28 D21H17/45

    摘要: A method of sizing paper, comprising applying thereto a sizingly effective amount of a polymer selected from the group consisting of:(a) homopolymers of .alpha.,.alpha.-dimethyl-m-isopropenyl benzyl amine or .alpha.,.alpha.-dimethyl-p-isopropenyl benzyl amine;(b) copolymers of (i) .alpha.,.alpha.-dimethyl-m-isopropenyl benzyl amine or .alpha.,.alpha.-dimethyl-p-isopropenyl benzylamine, and (ii) at least one other ethylenically unsaturated monomer copolymerizable therewith; and(c) acid salts of said homopolymers (a) and copolymers (b).Such homopolymers or copolymers suitably may be prepared as the hydrolysis reaction products of the corresponding homopolymeric or copolymeric isocyanates.

    摘要翻译: 一种调整纸张尺寸的方法,其包括施加大小有效量的选自以下的聚合物:(a)α,α-二甲基 - 间 - 异丙烯基苄胺或α,α-二甲基 - 对 - 异丙烯基苄基 胺; (b)(i)α,α-二甲基 - 间 - 异丙烯基苄胺或α,α-二甲基 - 对异丙烯基苄胺的共聚物,和(ii)至少一种可与其共聚的其它烯属不饱和单体; 和(c)所述均聚物(a)和共聚物(b)的酸式盐。 这种均聚物或共聚物可以适当地制备为相应的均聚或共聚异氰酸酯的水解反应产物。

    Additives for improving tire cord adhesion and toughness of vulcanized
rubber compositions
    4.
    发明授权
    Additives for improving tire cord adhesion and toughness of vulcanized rubber compositions 失效
    用于改善硫化橡胶组合物的轮胎帘线粘附性和韧性的添加剂

    公开(公告)号:US5298539A

    公开(公告)日:1994-03-29

    申请号:US578489

    申请日:1990-09-05

    CPC分类号: C08K5/34922

    摘要: New additives in rubber compositions improve tire cord adhesion without need to use resorcinol. The new additives are derivatives of melamine, aceto guanamine, benzoguanamine, cyclohexylguanamine, and glycoluril, substituted with at least two vinyl-terminated radicals. Preferred compounds may also be substituted with at least one radical having a carbamylmethyl group.

    摘要翻译: 橡胶组合物中的新添加剂可改善轮胎帘线的粘附性,而不需要使用间苯二酚。 新添加剂是由至少两个乙烯基封端的基团取代的三聚氰胺,乙酰胍胺,苯并胍胺,环己基胍胺和甘脲的衍生物。 优选的化合物也可以被至少一个具有氨甲酰基甲基的基团取代。

    Process for preparing esters of 3,5,6-trichlorosalicyclic acid
    5.
    发明授权
    Process for preparing esters of 3,5,6-trichlorosalicyclic acid 失效
    制备3,5,6-三氯水杨酸酯的方法

    公开(公告)号:US5194666A

    公开(公告)日:1993-03-16

    申请号:US921785

    申请日:1992-07-30

    IPC分类号: C07C51/363 C07C67/08

    CPC分类号: C07C51/363 C07C67/08

    摘要: An improved process for the synthesis of esters of 3,5,6-trichlorosalicylic acid in quantitative yield comprises reacting the acid with an alcohol under distillation conditions in the presence of a titanium ester or chelate catalyst, whereby byproduct ether formation from the alcohol is suppressed. The process is especially applicable to a process by which salicylic acid is chlorinated first in concentrated sulfuric acid and then with iodine catalyst to make the trichlorosalicylic acid which is extracted and then reacted with an alcohol and a titanium catalyst to make the ester.

    摘要翻译: 用于以定量产率合成3,5,6-三氯水杨酸酯的改进方法包括在钛酯或螯合催化剂的存在下,在蒸馏条件下使酸与醇反应,由此抑制由醇形成的副产物醚 。 该方法特别适用于将水杨酸首先在浓硫酸中氯化,然后用碘催化剂氯化的方法,制备提取的三氯水杨酸,然后与醇和钛催化剂反应制得酯。

    Emulsion copolymers of meta- or para-isopropenyl-alpha,
alpha-di-methylbenzylisocyanates
    6.
    发明授权
    Emulsion copolymers of meta- or para-isopropenyl-alpha, alpha-di-methylbenzylisocyanates 失效
    间 - 或对 - 异丙烯基-α,α-二甲基苄基异氰酸酯的乳液共聚物

    公开(公告)号:US4754011A

    公开(公告)日:1988-06-28

    申请号:US563883

    申请日:1983-12-21

    摘要: A method of making a copolymer of meta- or para-isopropenyl- .alpha.,.alpha.-dimethylbenzylisocyanate and at least one other ethylenically unsaturated comonomer polymerizable therewith, comprising polymerizing the meta- or para-isopropenyl- .alpha.,.alpha.-dimethylbenzylisocyanate and at least one other ethylenically unsaturated comonomer in an aqueous emulsion in the presence of a free-radical polymerization initiator and a chain transfer agent to control molecular weight.Also disclosed are methods of breaking the aqueous emulsion after polymerization is completed by either adding a salt, e.g., aluminum sulfate, or by freezing the emulsion followed by thawing to yield the copolymer as a mechanically separable solid phase of a two-phase liquid-solid mixture.

    摘要翻译: 一种制备间 - 或对 - 异丙烯基-α,α-二甲基苄基异氰酸酯与至少一种可与其聚合的其它烯属不饱和共聚单体的共聚物的方法,包括聚合间 - 或对 - 异丙烯基-α,α-二甲基苄基异氰酸酯和至少一种其它 烯键式不饱和共聚单体在水乳液中,在自由基聚合引发剂和链转移剂的存在下,以控制分子量。 还公开了在通过加入盐(例如硫酸铝)完成聚合之后或通过冷冻乳液,然后解冻以产生共聚物作为两相液固的机械可分离的固相来破坏水性乳液的方法 混合物。