ADHESIVE AGENT COMPOSITION FOR HOT MELT

PROBLEM TO BE SOLVED: To provide an adhesive for hot melts which has a long open time and excellent adhesive strength.SOLUTION: An adhesive agent composition for hot melts comprises 1-50 mass% of a 1-butene-α-olefin random copolymer (Y) having (i) a ratio (Mw/Mn) of the wt. average molecular wt. Mw...

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Bibliographic Details
Main Authors TANAKA SHINYA, YOSHIMOTO KOYA, AKAI IKUO, YAMAGUCHI MASAYOSHI
Format Patent
LanguageEnglish
Japanese
Published 05.10.2015
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Summary:PROBLEM TO BE SOLVED: To provide an adhesive for hot melts which has a long open time and excellent adhesive strength.SOLUTION: An adhesive agent composition for hot melts comprises 1-50 mass% of a 1-butene-α-olefin random copolymer (Y) having (i) a ratio (Mw/Mn) of the wt. average molecular wt. Mw to the number average molecular wt. Mn of 1.0-3.5, measured by GPC and (ii) a crystal fusion heat of 20-70 G/g, 30-90 mass% of a tackifier (X) and 30-90 mass% of a base polymer (Z) of a melt viscosity at 190°C of 1-15,000 mPa s, with (Y)+(X)+(Z)=100 mass%. 【課題】本発明の課題は、オープンタイムが長く、接着強度に優れたホットメルト用接着剤を得ることにある。【解決手段】本発明は、(i)GPCで求められる重量平均分子量Mw,数平均分子量Mnの比(Mw/Mn)が1.0〜3.5の範囲、および(ii)結晶融解熱量が20〜70J/gの範囲にある1−ブテン・α-オレフィンランダム共重合体(Y):1〜50質量%、粘着付与剤(X):30〜90質量%、および190℃での溶融粘度が1〜15000mPa・sの範囲にあるベースポリマー(Z):30〜90質量%〔ただし、(Y)+(X)+(Z)=100質量%とする。〕を含有してなることを特徴とするホットメルト用接着剤組成物に係る。【選択図】なし
Bibliography:Application Number: JP20140050360