乙烯/乙烯醇类共聚物水性分散液

Aqueous ethylene/vinyl alcohol copolymer dispersion

Abstract

本发明提供长期的保存稳定性优异,并且即使进行低温或短时间下的干燥、厚膜涂布时成膜性也优异,并且得到的涂膜具有高气体阻隔性能的乙烯/乙烯醇类共聚物水性分散液。本发明涉及乙烯/乙烯醇类共聚物水性分散液,其含有:(A)乙烯含量为15~65摩尔%、皂化度为80摩尔%以上的乙烯/乙烯醇类共聚物,(B)用碱中和过的乙烯/α,β-不饱和羧酸类共聚物和(C)皂化度为75~100摩尔%、聚合度为100~3500的聚乙烯醇;相对于乙烯/乙烯醇类共聚物(A)100重量份,聚乙烯醇(C)的含量为0.5~100重量份。
An aqueous ethylene/vinyl alcohol copolymer dispersion which has excellent long-term storage stability, has excellent film-forming properties even when dried at a low temperature or in a short time or applied thick, and gives a film having high gas barrier performance. The aqueous ethylene/vinyl alcohol copolymer dispersion comprises (A) an ethylene/vinyl alcohol copolymer having an ethylene content of 15-65 mol% and a degree of saponification of 80 mol% or higher, (B) an ethylene/a,ss-unsaturated carboxylic acid copolymer neutralized with a base, and (C) polyvinyl alcohol having a degree of saponification of 75-100 mol% and a degree of polymerization of 100-3,500, the amount of the polyvinyl alcohol (C) being 0.5-100 parts by weight per 100 parts by weight of the ethylene/vinyl alcohol copolymer (A).

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Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    CN-1342725-AApril 03, 2002埃勒夫阿托化学有限公司Composition containing at least one polyamide and composite containing the composition coating
    WO-03025058-A1March 27, 2003Sumitomo Seika Chemicals Co., Ltd., Kuraray Co., Ltd.Aqueous dispersion of ethylene/vinyl alcohol copolymer

NO-Patent Citations (2)

    Title
    JP平11-193340A 1999.07.21
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