发明名称 |
Composition durcissable pour le collage des stratifiés |
摘要 |
<p>Curable laminating compositions comprise (a) a polyepoxide of the formula <FORM:1057463/C3/1> in which X is (-CH2-O2C-) or (-CH2O2CRCO2CH2-) or (-CO2RO2C-), R is an aliphatic hydrocarbon group of 2-6 carbon atoms or -OZ- or the radical of a polyoxyalkylene glycol, HOROH, of 2-6 carbon atoms, Z is an alkylene group of 2-6 carbon atoms and R1 is H or an alkyl group of 1 to 4 carbon atoms; (b) a polyoxyalkylene polyol of molecular weight from 750-2500 and of hydroxyl equivalent weight from 275 to 1250; (c) a glycol of hydroxy equivalent weight below 114; (d) a carboxylic acid anhydride of an aliphatic dicarboxylic acid having an ionization constant of at least 2 x 10-5 and melting at or below 65 DEG C., and (e) an organic tin catalyst. The polyepoxide forms 30 to 40% by weight of the polyepoxide and polyol and glycol: the polyol forms at least 85% by wt. of polyol and glycol: the glycol is present in amounts sufficient to impart to the cured composition a resin stiffness ( = the ratio of ultimate tensile strength to percentage elongation at failure at 25 DEG C. of 0.4-1.8 p.s.i.: the anhydride is present in an amount to provide 1.8-2.2 carboxyl groups per hydroxyl group of polyol and glycol: and the catalyst is present in amounts of 0.25-1.5 wt. per cent as tin based on the total weight of the laminating composition. Organic tin catalysts specified are SnII SnIV acylates, alkodxides, phenoxides cresoxides; the oxidized SnII acylates; and the SnIV mercaptides and organophosphates. The products are useful in laminating implosion caps to cathode-ray tubes.</p> |
申请公布号 |
CH432830(A) |
申请公布日期 |
1967.03.31 |
申请号 |
CH19640001389 |
申请日期 |
1964.02.06 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
WESLEY,JR. MCGARY,CHARLES;THEO,JR. PATRICK,CHARLES |
分类号 |
C08G59/42;C08L63/00;H01J29/87;(IPC1-7):C08G45/02 |
主分类号 |
C08G59/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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