Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From aldehyde or derivative thereof as reactant
Patent
1996-05-03
1998-06-09
Truong, Duc
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From aldehyde or derivative thereof as reactant
528230, 528247, C08G 400
Patent
active
057635609
ABSTRACT:
A method of producing styrene derivatives expressed the general formula (2) by reacting a benzaldehyde derivative expressed by the general formula (1) with dibromomethane under the existence of zinc metal as well as an active chloride for producing various types of oxystyrene which are polymerized monomers as a photoresist material used in a high density integrated circuit process from easily available materials which also can easily be handled: ##STR1## (wherein R indicates a an alkyl group, alkoxyalkyl group, an alkylcarbonyl group, an alkoxycarbonyl group, a 5 or 6-atom heterocylclic groups, or an alkylsilyl group); ##STR2## (wherein R indicates any of the same substituents as those described above.)
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Ayabe Yoshiharu
Ishino Yoshio
Matsunaga Fujihisa
Nishiguchi Ikuzo
Tsujimoto Kenzo
Honshu Chemical Industry Co. Ltd.
Osaka Municipal Government
Truong Duc
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