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    • 7. 发明公开
    • 비닐 알콜계 중합체를 포함하는 종이용 도포제와, 이것을 도포한 종이 및 감열지
    • 用于纸和纸的乙烯醇聚合物包覆涂料和涂料代理的热敏纸
    • KR1020100061752A
    • 2010-06-08
    • KR1020107009230
    • 2008-09-19
    • 주식회사 쿠라레
    • 지키하라아쓰시나카마에마사토나카가와가즈키호리고지와타나베미사
    • D21H19/20B41M5/337C08G12/36D21H19/24
    • B41M5/5254B41M5/3372B41M5/44D21H19/20D21H19/24Y10T428/31895
    • This invention provides a vinyl alcohol polymer-containing coating agent for paper, which, despite the fact that a curing step after coating the coating agent onto a paper surface can be omitted, can form a layer (for example, a coating layer or a color developing layer) having excellent water resistance and having no significant susceptibility to yellowing with the elapse of time. The coating agent is an aqueous composition comprising a vinyl alcohol polymer (A) satisfying a formula ";X + 0.2Y > 95", wherein X represents the content of vinyl alcohol units, % by mole; and Y represents the content of ethylene units, % by mole, and an addition condensation product (B) between ethylene urea and glyoxal. In the addition condensation product (B), the content of the terminal aldehyde group per g of the solid is 1.2 to 3.0 (mmol). The weight ratio on a solid basis between the vinyl alcohol polymer (A) and the addition condensation product (B) is in the range of (A) : (B) = 99 : 1 to 50 : 50. In the above formula, X
    • 本发明提供一种含乙烯醇聚合物的纸用涂布剂,尽管可以省略将涂布剂涂布在纸表面上后的固化步骤,但可以形成层(例如,涂层或颜色 显影层),具有优异的耐水性,并且随着时间的流逝对黄变没有显着的敏感性。 涂层剂是包含满足式“X + 0.2Y> 95”的乙烯醇聚合物(A)的水性组合物,其中X表示乙烯醇单元的含量,摩尔% Y表示乙烯单元的含量,摩尔%,乙烯脲与乙二醛之间的加成缩合物(B)。 在加成缩合产物(B)中,每1g固体的末端醛基的含量为1.2〜3.0(mmol)。 乙烯醇聚合物(A)和加成缩合物(B)之间的固体重量比在(A):(B)= 99:1〜50:50的范围内。在上式中,X <99.9,0