Chain extended cyclohexanone-formaldehyde and acetophenone-formaldehyde resins

被引:0
|
作者
Kizilcan, N [1 ]
Akar, A [1 ]
机构
[1] Istanbul Tech Univ, Dept Chem, Fac Sci, TR-80626 Istanbul, Turkey
关键词
ketonic resins; chain extension; anhydrides; phosphorous oxychloride; dimethyl dichlorosilane; toluene-2,4-diisocyanate;
D O I
10.1002/(SICI)1097-4628(19981024)70:4<655::AID-APP4>3.0.CO;2-P
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The preparation of chain extended cyclohexanone-formaldehyde and acetophenone-formaldehyde resins and their physical properties were studied. The chain extension was regulated by the ratio of the hydroxyl groups of the ketonic resin/reactive reagents. Both resins were chain extended with dimethyl dichlorosilane, phosphorus oxychloride, phenylphosphonic dichloride, toluene-2,4-diisocyanate, prepolymers (prepared from trimethylolpropane and toluene-2,4-diisacyanate), phthalic anhydride, tetrahydrophthalic anhydride, trimellitic anhydride, 4,4'-oxydiphthalic anhydride, and maleic anhydride. Solubilities, melting point, molecular weight, and flammability of the chain extended resins were affected by the extender reagent. (C) 1998 John Wiley & Sons, Inc.
引用
收藏
页码:655 / 663
页数:9
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