Curable crosslinking system with monobenzaldimine as crosslinker
    1.
    发明授权
    Curable crosslinking system with monobenzaldimine as crosslinker 失效
    可变交联体系,以单苯甲醛亚胺为交联剂

    公开(公告)号:US5451653A

    公开(公告)日:1995-09-19

    申请号:US365723

    申请日:1994-12-28

    IPC分类号: C08F8/30 C08G18/83

    CPC分类号: C08F8/30 C08G18/833

    摘要: This invention relates to improved crosslinking systems for polymeric dispersions and solutions having suitability for coatings, adhesives and use in many other applications. These systems are based upon crosslinkable polymers having a plurality of activated keto methylene groups, e.g., a beta diketone such as an acetoacetate or a keto cyano methylene functional groups and a crosslinkable component comprising an aldimine. A sufficient amount of the aldimine curing agent is used to effect reaction with the polymer containing the activated keto methylene groups and cure thereof. The improvement in the crosslinking system resides in the utilization of a monoaldimine having only one aldimine group and no other methylene reactive group as a crosslinking agent. Another improvement variation to that previously suggested comprises a redispersible polymer(s) containing activated methylene functionality and combined with the monoaldimine and the use of heterocyclic aldimine.

    摘要翻译: 本发明涉及用于聚合物分散体的改进的交联体系和具有适用于涂料,粘合剂和在许多其它应用中使用的溶液。 这些体系基于具有多个活化的酮亚甲基的可交联聚合物,例如β-二酮如乙酰乙酸酯或酮基氰基亚甲基官能团,以及可交联组分,其包含醛亚胺。 使用足够量的醛亚胺固化剂来与含有活化酮亚甲基的聚合物进行反应并固化。 交联体系的改进在于利用仅具有一个醛亚胺基并且没有其它亚甲基反应性基团的单醛亚胺作为交联剂。 与之前提出的另一改进的变化包括含有活化的亚甲基官能团的可再分散的聚合物并与单醛亚胺和使用杂环醛亚胺组合。

    Paper wet-strength improvement with cellulose reactive size and amine
functional poly(vinyl alcohol)
    3.
    发明授权
    Paper wet-strength improvement with cellulose reactive size and amine functional poly(vinyl alcohol) 失效
    纤维素反应性大小和胺官能聚(乙烯醇)纸张湿强度改善

    公开(公告)号:US5397436A

    公开(公告)日:1995-03-14

    申请号:US207460

    申请日:1994-03-07

    摘要: The wet strength of cellulosic paper is improved by adding the combination of an amine-functional poly(vinyl alcohol) and a cellulose reactive size which is a 4 or 5 membered cyclic ester or anhydride having alkyl or alkenyl substituents of 4 or more carbon atoms. The amine-functional polymer is preferably a hydrolyzed copolymer of vinyl acetate and N-vinylformamide in which about 1-25 mole % of the monomer units are incorporated N-vinylformamide, and the cellulose reactive size is preferably an alkyl ketene dimer or an alkenyl succinic anhydride. A paper product is provided having improved wet-strength and containing normally 0.05 to 4.0 wt % based on the dry pulp of the additive amine-functional polymer and cellulose reactive size. The particular compounds which represent the polymer and the size cooperate to provide improvements in wet-tensile strength for paper which could not have been foreseen from the effects of either material acting alone.

    摘要翻译: 纤维素纸的湿强度通过加入胺官能聚(乙烯醇)和纤维素反应性大小的组合来改善,该组合是具有4个或更多个碳原子的烷基或链烯基取代基的4或5元环状酯或酸酐。 胺官能聚合物优选为乙酸乙烯酯和N-乙烯基甲酰胺的水解共聚物,其中约1-25摩尔%的单体单元加入N-乙烯基甲酰胺,纤维素反应性大小优选为烷基烯酮二聚体或链烯基琥珀酸 酐。 提供了具有改进的湿强度并且基于添加剂胺官能聚合物的干纸浆和纤维素反应尺寸通常含有0.05至4.0重量%的纸产品。 表示聚合物和尺寸的特定化合物相互配合以提供纸张的湿拉伸强度的改进,这不仅是单独使用任一种材料的作用所预见的。

    Two-phase process for preparing poly(vinyl alcohol)-co-poly(vinylamine)
    5.
    发明授权
    Two-phase process for preparing poly(vinyl alcohol)-co-poly(vinylamine) 失效
    制备聚(乙烯醇) - 共聚(乙烯基胺)的两相工艺

    公开(公告)号:US5194492A

    公开(公告)日:1993-03-16

    申请号:US816196

    申请日:1992-01-02

    IPC分类号: C08F8/12

    CPC分类号: C08F8/12

    摘要: Vinyl acetate and an N-vinyl formamide are copolymerized to yield poly(vinyl acetate)-co-poly(N-vinyl formamide) which is base hydrolyzed to poly(vinyl alcohol)-co-poly(N-vinyl formamide). Two phase hydrolysis of particles of poly(vinyl alcohol)-co-poly(N-vinyl formamide) as a slurry in methanol yields particles of poly(vinyl alcohol)-co-poly(vinylamine).Provided is a copolymer of the following general formula ##STR1## where m is 0 to 15 mole %,n is 50 to 99 mole %, x is 0 to 30 mole %, and y is 1 to 50 mole %.

    摘要翻译: 将乙酸乙烯酯和N-乙烯基甲酰胺共聚合得到基础水解成聚(乙烯醇) - 共 - (N-乙烯基甲酰胺)的聚乙酸乙烯酯 - 共 - (N-乙烯基甲酰胺)。 在甲醇中作为浆料的聚(乙烯醇) - 共聚(N-乙烯基甲酰胺)颗粒的两相水解产生聚(乙烯醇) - 共 - (乙烯胺)的颗粒。 本发明提供下述通式[IMAGE]的共聚物,其中m为0〜15摩尔%,n为50〜99摩尔%,x为0〜30摩尔%,y为1〜50摩尔%。

    Method for preparing poly(vinyl alcohol)-co-poly(vinylamine) via a
two-phase process
    6.
    发明授权
    Method for preparing poly(vinyl alcohol)-co-poly(vinylamine) via a two-phase process 失效
    通过两相工艺制备聚(乙烯醇) - 共聚(乙烯基胺)的方法

    公开(公告)号:US5300566A

    公开(公告)日:1994-04-05

    申请号:US181887

    申请日:1988-04-15

    IPC分类号: C08F8/12 C08F16/06

    CPC分类号: C08F8/12

    摘要: Vinyl acetate and an N-vinyl formamide are copolymerized to yield poly(vinyl acetate)-co-poly(N-vinyl formamide) which is base hydrolyzed to poly(vinyl alcohol)-co-poly(N-vinyl formamide). Two phase hydrolysis of particles of poly(vinyl alcohol)-co-poly(N-vinyl formamide) as a slurry in methanol yields particles of poly(vinyl alcohol)-co-poly(vinylamine).provided is a copolymer of the following general formula ##STR1## where m is 0 to 15 mole %. n is 50 to 99 mole %.x is 0 to 30 mole %. andy is 1 to 50 mole % .

    摘要翻译: 将乙酸乙烯酯和N-乙烯基甲酰胺共聚合得到基础水解成聚(乙烯醇) - 共 - (N-乙烯基甲酰胺)的聚乙酸乙烯酯 - 共 - (N-乙烯基甲酰胺)。 在甲醇中作为浆料的聚(乙烯醇) - 共聚(N-乙烯基甲酰胺)颗粒的两相水解产生聚(乙烯醇) - 共 - (乙烯胺)的颗粒。 提供了以下通式(*化学结构*)的共聚物,其中m为0至15摩尔%。 n为50〜99摩尔%。 x为0〜30摩尔%。 y为1〜50摩尔%。

    Process for the synthesis of oligomeric vinylamines
    7.
    发明授权
    Process for the synthesis of oligomeric vinylamines 失效
    低聚乙烯基胺的合成方法

    公开(公告)号:US5280077A

    公开(公告)日:1994-01-18

    申请号:US913563

    申请日:1992-07-14

    CPC分类号: C08F26/02 C08F8/12

    摘要: Vinylamide oligomers and lower molecular weight polymers are prepared by the cationic polymerization of vinylamides in the presence of a Lewis acid at a temperature between -100.degree. and 100.degree. C. The resultant vinylamide oligomers and polymers can optionally be hydrolyzed under acidic or basic conditions to form the corresponding vinylamine oligomers and polymers.

    摘要翻译: 乙烯基酰胺低聚物和低分子量聚合物通过在路易斯酸的存在下在-100至100℃的温度下,通过乙烯基酰胺的阳离子聚合来制备。所得乙烯基酰胺低聚物和聚合物可以任选地在酸性或碱性条件下水解成 形成相应的乙烯基胺低聚物和聚合物。

    Ketone bisulfites as reducing agent for free radical polymerization
    10.
    发明授权
    Ketone bisulfites as reducing agent for free radical polymerization 失效
    酮亚硫酸氢盐作为自由基聚合的还原剂

    公开(公告)号:US4360632A

    公开(公告)日:1982-11-23

    申请号:US314318

    申请日:1981-10-23

    CPC分类号: C08F4/40

    摘要: This invention relates to an improvement in a process for producing a latex containing dispersed polymer. The improvement in the process for polymerizing a reaction mixture of vinyl monomer, stabilizer, oxidizing agent and reducing agent comprises using a water-soluble ketone bisulfite as the reducing agent, either alone or with other reducing agents, the ketone having from 3 to 8 carbon atoms in the structure. During the polymerization, the ketone bisulfite is maintained in stoichiometric excess of the oxidizing agent. Vinyl acetate-ethylene copolymers are some of the preferred polymer systems produced.

    摘要翻译: 本发明涉及一种制备含分散聚合物的胶乳的方法的改进。 用于聚合乙烯基单体,稳定剂,氧化剂和还原剂的反应混合物的方法的改进包括使用水溶性亚硫酸氢亚酮作为还原剂,单独或与其它还原剂一起使用,所述酮具有3至8个碳 原子在结构中。 在聚合期间,酮亚硫酸氢盐保持在化学计量过量的氧化剂中。 乙酸乙烯酯 - 乙烯共聚物是一些优选的聚合物体系。