Aqueous polyurethane adhesive dispersions
    12.
    发明授权
    Aqueous polyurethane adhesive dispersions 失效
    水性聚氨酯胶粘剂分散体

    公开(公告)号:US4861826A

    公开(公告)日:1989-08-29

    申请号:US133378

    申请日:1987-12-15

    摘要: Aqueous dispersions of polyurethanes consisting of(a) organic polyisocyanates,(b) polyesterpolyols having a molecular weight of from 500 to 5,000,(c) organic hydroxy compounds having a molecular weight of from 62 to 400 and two terminal groups which are reactive to isocyanate groups, as chain extenders, and(d) compounds containing ionic groups or groups which can be converted to ionic groups and one or more isocyanate groups or a hydroxyl or amino group which is reactive to isocyanate groups,which contain from 0.05 to 2 meq of ionic groups incorporated into the polyurethane via (d) per g of polyurethane are particularly suitable for adhesives when the chain extenders (c) are incorporated in an amount of from 1.5 to 8 moles per mole of polyols, and a minor amount of (a) can be replaced with monoisocyanates, and a minor amount of (b) with polyetherpolyols.

    摘要翻译: 由(a)有机多异氰酸酯,(b)分子量为500〜5000的聚酯多元醇组成的聚氨酯的水分散体,(c)分子量为62〜400的有机羟基化合物和与异氰酸酯反应的两个端基 基团,作为扩链剂,和(d)可以转化为离子基团和一个或多个异氰酸酯基团或与异氰酸酯基团反应的羟基或氨基的离子基团或基团的化合物,其含有0.05至2meq 通过(d)每g聚氨酯掺入聚氨酯中的离子基团特别适用于粘合剂,当增链剂(c)以每摩尔多元醇1.5至8摩尔的量加入时,少量的(a) 可以用单异氰酸酯代替,和少量的(b)与聚醚多元醇。

    Thickeners for aqueous dispersions
    13.
    发明授权
    Thickeners for aqueous dispersions 失效
    增稠剂用于水性分散体

    公开(公告)号:US06803405B1

    公开(公告)日:2004-10-12

    申请号:US10088521

    申请日:2002-03-29

    IPC分类号: C08L3104

    CPC分类号: C08F226/10 C08F218/08

    摘要: The invention relates to the aqueous preparation of a polymer. Said preparation contains a copolymer consisting of a) 30 to 79.5 wt. % N-vinylpyrrolidone, b) 20 to 69.5 wt. % vinylacetate, c) 0.5 to 25 wt % of a monovinyl ester of a C4 to C20 monocarboxylic acid and d) 0 to 40 wt. % of an additional, copolymerisable, ethylenically unsaturated compound.

    摘要翻译: 本发明涉及聚合物的水性制剂。 所述制备物包含由以下组分组成的共聚物:a)30〜79.5重量% %N-乙烯基吡咯烷酮,b)20〜69.5重量% %乙酸乙烯酯,c)0.5〜25重量%的C4〜C20一元羧酸的单乙烯基酯,以及d)0〜40重量% %的另外的可共聚的烯属不饱和化合物。

    Method for adjusting the particle size of popcorn polymers during popcorn polymerization
    14.
    发明授权
    Method for adjusting the particle size of popcorn polymers during popcorn polymerization 有权
    爆米花聚合过程中调整爆米花聚合物粒径的方法

    公开(公告)号:US06677417B2

    公开(公告)日:2004-01-13

    申请号:US10220278

    申请日:2002-09-09

    IPC分类号: C08F2608

    CPC分类号: C08F2/22 C08F26/06

    摘要: The particle size of popcorn polymers is established during the popcorn polymerization by a process in which reaction mixtures forming popcorn polymers and comprising monoethylenically unsaturated monomers and a crosslinking agent are polymerized in the absence of oxygen and polymerization initiators at up to 200° C. and in which the popcorn polymerization is carried out as a precipitation polymerization in water or in the absence of a solvent and the particle size of the popcorn polymers is controlled in the range from 1 &mgr;m to 10 mm by passing an inert gas stream into the reaction mixture, and popcorn polymers having a mean particle diameter of from >400 &mgr;m to 1500 &mgr;m are used as beverage clarifiers, antidiarrheal drugs and disintegration accelerators for tablets.

    摘要翻译: 在爆米花聚合期间,通过形成爆米花聚合物和包含单烯属不饱和单体和交联剂的反应混合物在不存在氧和聚合引发剂的情况下在高达200℃下聚合并在 其中爆米花聚合在水中或在不存在溶剂的情况下作为沉淀聚合进行,并且通过使惰性气流通入反应混合物中将爆米花聚合物的粒径控制在1μm至10mm的范围内, 并且使用平均粒径为>400μm至1500μm的爆米花聚合物作为饮料澄清剂,止泻药物和片剂的崩解促进剂。