Method for reducing wall fouling in vinyl chloride polymerization
    2.
    发明授权
    Method for reducing wall fouling in vinyl chloride polymerization 失效
    减少氯乙烯聚合中壁堵塞的方法

    公开(公告)号:US4420591A

    公开(公告)日:1983-12-13

    申请号:US365117

    申请日:1982-04-05

    IPC分类号: C08F2/00 C08F14/06

    CPC分类号: C08F2/004

    摘要: This invention relates to an improvement for reducing the amount of wall fouling in the suspension polymerization of vinyl chloride. The improvement resides in wetting the reactor surface with a solution containing selenous acid prior to charging the vinyl chloride recipe to the reactor. Preferably, the surface of the resulting reactor is heated at a temperature of from 40.degree.-100.degree. C. prior to charging the recipe.

    摘要翻译: 本发明涉及减少氯乙烯悬浮聚合中壁污染量的改进。 改进在于在将氯乙烯配方装入反应器之前用含有硒酸的溶液润湿反应器表面。 优选地,在充填配方之前,将所得反应器的表面在40℃-100℃的温度下加热。

    Migration-resistant binder compositions for bonding nonwoven fibers;
also methods and articles
    3.
    发明授权
    Migration-resistant binder compositions for bonding nonwoven fibers; also methods and articles 失效
    用于粘合非织造纤维的耐迁移性粘合剂组合物; 也是方法和文章

    公开(公告)号:US4119600A

    公开(公告)日:1978-10-10

    申请号:US686980

    申请日:1976-05-17

    摘要: Migration-resistant binder compositions for bonding nonwoven fibers are disclosed. These compositions comprise (A) an anionically-stabilized polymer latex; (B) a water-soluble polymer of 20-100% by weight of mer units containing an amine group and having a viscosity average molecular weight between 5,000 and 300,000; and (C) a volatile base. Usually, the compositions have a solids content between 10% and 60% by weight, a viscosity below 3,000 centipoise, a pH above 5, and a component (B) content between 0.1% and 20% by weight of the solids. In alternative compositions, component (B) is replaced by component (B'), a water-insoluble polymer with the same amine group content and a viscosity average molecular weight between 5,000 and 100,000.

    摘要翻译: 公开了用于粘合非织造纤维的耐迁移性粘合剂组合物。 这些组合物包含(A)阴离子稳定的聚合物胶乳; (B)20-100重量%的含有胺基并具有5,000至300,000的粘均分子量的聚合单元的水溶性聚合物; 和(C)挥发性碱。 通常,组合物的固体含量为10重量%至60重量%,粘度低于3,000厘泊,pH高于5,组分(B)含量为固体重量的0.1%至20%。 在替代组合物中,组分(B)被组分(B')代替,具有相同胺基含量和5,000至100,000之间的粘均分子量的水不溶性聚合物。

    Release coatings based on polyvinyl alcohol
    5.
    发明授权
    Release coatings based on polyvinyl alcohol 失效
    释放基于聚乙烯醇的涂料

    公开(公告)号:US4386183A

    公开(公告)日:1983-05-31

    申请号:US254833

    申请日:1981-04-16

    申请人: Lawrence K. Wempe

    发明人: Lawrence K. Wempe

    IPC分类号: C09D129/04 D21H27/00 C08K3/38

    CPC分类号: D21H27/001 C09D129/04

    摘要: Polyvinyl alcohol based release coating compositions for strippable substrates which are in contact with pressure sensitive adhesives are disclosed. Substrates coated with the release compositions are easily peeled from pressure sensitive adhesive coated substrates without substantially adversely affecting the adhesive character of the adhesive coated substrate. The release coating composition comprises polyvinyl alcohol, a migratable release promoting agent, a water soluble salt of a coordinating metal and a water soluble boron compound in an aqueous solution. In addition to composites comprising release coated substrates affixed to adhesive coated substrates, the release compositions can be applied to the backing of a pressure sensitive adhesive tape to permit facile uncoiling of the rolled tape product.

    摘要翻译: 公开了与压敏粘合剂接触的可剥离基材的聚乙烯醇基剥离涂料组合物。 涂有释放组合物的基材容易从压敏粘合剂涂布的基材上剥离,而基本上不利地影响粘合剂涂布的基材的粘合特性。 脱模涂料组合物包含聚乙烯醇,可迁移释放促进剂,配位金属的水溶性盐和水溶性硼化合物。 除了包含固定到粘合剂涂覆的基材上的脱模涂布的基材的复合材料之外,还可以将剥离组合物施加到压敏粘合带的背衬上,以允许卷起的带产品容易地开卷。

    Vinyl alcohol copolymers containing allylamine functionality
    7.
    发明授权
    Vinyl alcohol copolymers containing allylamine functionality 失效
    含有烯丙胺官能团的乙烯醇共聚物

    公开(公告)号:US5155167A

    公开(公告)日:1992-10-13

    申请号:US428805

    申请日:1989-10-30

    IPC分类号: C08F8/12 C08F16/02 C08F16/06

    CPC分类号: C08F8/12 C08F2810/20

    摘要: A modified poly(vinyl alcohol) copolymer is provided containing copolymerized units of allylamine and/or diallylamine by copolymerizing a vinyl ester, such as vinyl acetate, and an N-allylamide and/or N,N-diallylamide, such as N-allylformamide and/or N,N-diallylformamide and hydrolyzing first the ester groups to hydroxy groups and then the amide groups to amine groups. The second hydrolysis is carried out on solvent-swollen particulate polymer slurried in an acidic or basic medium. The modified polymer can contain small amounts of unhydrolyzed ester and amide groups in addition to the hydroxy and amine functionality which characterizes the copolymer.

    摘要翻译: 通过共聚乙烯基酯如乙酸乙烯酯和N-烯丙基酰胺和/或N,N-二烯丙基酰胺如N-烯丙基甲酰胺和/或N-烯丙基甲酰胺,提供含有烯丙胺和/或二烯丙基胺的共聚单元的改性聚(乙烯醇)共聚物 /或N,N-二烯丙基甲酰胺,并首先将酯基水解成羟基,然后将酰胺基水解成胺基。 在酸性或碱性介质中浆化的溶剂溶胀的颗粒聚合物上进行第二次水解。 除了表征共聚物的羟基和胺官能团之外,改性聚合物可以含有少量未水解的酯和酰胺基团。

    Substrates coated with release composition based on polyvinyl alcohol
and composites with pressure sensitive adhesives
    9.
    发明授权
    Substrates coated with release composition based on polyvinyl alcohol and composites with pressure sensitive adhesives 失效
    用基于聚乙烯醇的剥离组合物和与压敏粘合剂的复合材料涂覆的基材

    公开(公告)号:US4440830A

    公开(公告)日:1984-04-03

    申请号:US437406

    申请日:1982-10-28

    申请人: Lawrence K. Wempe

    发明人: Lawrence K. Wempe

    摘要: Polyvinyl alcohol based release coating compositions for strippable substrates which are in contact with pressure sensitive adhesives are disclosed. Substrates coated with the release compositions are easily peeled from pressure sensitive adhesive coated substrates without substantially adversely affecting the adhesive character of the adhesive coated substrate. The release coating composition comprises polyvinyl alcohol, a migratable release promoting agent, a water soluble salt of a coordinating metal and a water soluble boron compound in an aqueous solution. In addition to composites comprising release coated substrates affixed to adhesive coated substrates, the release compositions can be applied to the backing of a pressure sensitive adhesive tape to permit facile uncoiling of the rolled tape product.

    摘要翻译: 公开了与压敏粘合剂接触的可剥离基材的聚乙烯醇基剥离涂料组合物。 涂有释放组合物的基材容易从压敏粘合剂涂布的基材上剥离,而基本上不利地影响粘合剂涂布的基材的粘合特性。 脱模涂料组合物包含聚乙烯醇,可迁移释放促进剂,配位金属的水溶性盐和水溶性硼化合物。 除了包含固定到粘合剂涂覆的基材上的脱模涂布的基材的复合材料之外,还可以将剥离组合物施加到压敏粘合带的背衬上,以允许卷起的带产品容易地开卷。

    Migration-resistant binder compositions for bonding nonwoven fibers;
also methods and articles
    10.
    发明授权
    Migration-resistant binder compositions for bonding nonwoven fibers; also methods and articles 失效
    用于粘合非织造纤维的耐迁移性粘合剂组合物; 也是方法和文章

    公开(公告)号:US4199400A

    公开(公告)日:1980-04-22

    申请号:US806047

    申请日:1977-06-13

    摘要: Migration-resistant binder compositions for bonding nonwoven fibers are disclosed. These compositions comprise (A) an anionically-stabilized polymer latex; (B) a water-soluble polymer of 20-100% by weight of mer units containing an amine group and having a viscosity average molecular weight between 5,000 and 300,000; (C) a volatile base and (D) 0 to 80% of pigment based on the total polymer weight of (A) and (B). Usually, the compositions have a solids content between 10% and 60% by weight, a viscosity below 3,000 centipoise, a pH above 5, and a component (B) content between 0.1% and 20% by weight of the solids. In alternative compositions, component (B) is replaced by component (B'), a water-insoluble polymer with the same amine group content and a viscosity average molecular weight between 5,000 and 100,000. (A), (B) and (B') are polymers of a .alpha.-.beta. ethylenically unsaturated monomers.

    摘要翻译: 公开了用于粘合非织造纤维的耐迁移性粘合剂组合物。 这些组合物包含(A)阴离子稳定的聚合物胶乳; (B)20-100重量%的含有胺基并具有5,000至300,000的粘均分子量的聚合单元的水溶性聚合物; (C)挥发性碱和(D)基于(A)和(B)的总聚合物重量的0至80%的颜料。 通常,组合物的固体含量为10重量%至60重量%,粘度低于3,000厘泊,pH高于5,组分(B)含量为固体重量的0.1%至20%。 在替代组合物中,组分(B)被组分(B')代替,具有相同胺基含量和5,000至100,000之间的粘均分子量的水不溶性聚合物。 (A),(B)和(B')是α-β烯属不饱和单体的聚合物。