Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1979-04-30
1980-10-07
Cockeram, H. S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
430900, 430 58, 430 72, 525127, 525424, 525440, 528 73, 526258, 526310, C08G 1832, C08G 1862
Patent
active
042269679
ABSTRACT:
An electron acceptor polycondensation polymer of the formula (I) ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group, an aryl group or an aralkyl group having not more than 15 carbon atoms; C.sub.m is a divalent connecting group; FLac is an electron acceptor group having a fluorene nucleus as its basic structure; X and Y are a carbonyl group or an acid amide group forming a urethane linkage with the oxygen atom of the diol; R.sub.2 is a bifunctional organic residue having not more than 20 carbon atoms, n is a number greater than 10 which represents the degree of polycondensation of the resultant polycondensation polymer.
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Kamogawa, J. Polymer Science, A-1, 4, 2281, (1966), Litt et al., J. Polymer Science, Polym. Chem. Ed., 11, 1339, 1359, (1973).
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Nagahara Hajime
Tazuke Shigeo
Asahi Kasei Kogyo Kabushiki Kaisha
Cockeram H. S.
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