Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1989-12-01
1991-06-04
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 61, C08F 800
Patent
active
050215051
ABSTRACT:
A photosensitive poly(vinyl alcohol) derivative comprising units of the fula ##STR1## wherein R.sub.1 is alkylene, R.sub.2 is hydrogen or a lower alkoxy, ##STR2## is a quaternary aromatic nitrogen-containing heterocycle, X.sup.- is SO.sub.3.sup.- or CO.sub.2.sup.-, m is 0 or 1, and n is an integer of 1 to 6 capable of being developed with an aqueous developing solution.
REFERENCES:
patent: Re27922 (1974-02-01), Heseltine et al.
Ichimura Kunihiro
Kikuchi Hideo
Tochizawa Noriaki
Bierman Jordan B.
Director General of the Agency of Industrial Science and Technol
Reddick J. M.
Schofer Joseph L.
Toyo Gosei Kogyo Co. Ltd.
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