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    • 7. 发明授权
    • Curable crosslinking system with monobenzaldimine as crosslinker
    • 可变交联体系,以单苯甲醛亚胺为交联剂
    • US5451653A
    • 1995-09-19
    • US365723
    • 1994-12-28
    • Ning ChenChao-Fong TienThomas M. SantosussoLarry A. WasowskiRobert K. Pinschmidt, Jr.
    • Ning ChenChao-Fong TienThomas M. SantosussoLarry A. WasowskiRobert K. Pinschmidt, Jr.
    • C08F8/30C08G18/83
    • C08F8/30C08G18/833
    • 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.
    • 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。
    • 8. 发明授权
    • Paper wet-strength improvement with cellulose reactive size and amine
functional poly(vinyl alcohol)
    • 纤维素反应性大小和胺官能聚(乙烯醇)纸张湿强度改善
    • US5397436A
    • 1995-03-14
    • US207460
    • 1994-03-07
    • Lloyd M. RobesonGeorge DavidowichRobert K. Pinschmidt, Jr.
    • Lloyd M. RobesonGeorge DavidowichRobert K. Pinschmidt, Jr.
    • D21H17/14D21H17/15D21H17/17D21H17/34D21H17/36D21H21/20
    • D21H17/17D21H17/15D21H17/34D21H21/20
    • 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.
    • 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。