Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1990-09-04
1992-03-17
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
525437, 528272, C08G 6378, C08G 6302, C08F 2000
Patent
active
050970070
ABSTRACT:
A polyester having dithiocarbamate group at its termini represented by the formula: ##STR1## wherein, in preferred embodiments, R.sup.1 and R.sup.2 are ethyl, R.sup.3 is ##STR2## R.sup.4 is --CH.sub.2 CH.sub.2 --, and R.sup.5 is ##STR3## The dithiocarbamate groups in the polymer can easily be dissociated upon irradiation with UV to produce polymeric free radicals, which can initiate an ethylenically unsaturated monomer to form a block copolymer of a molecular structure of ABA where B indicates a block corresponding to the polyester and A indicates a block of the monomer polymerized.
REFERENCES:
patent: 4435546 (1984-03-01), Bier et al.
Kight III John
Mistubishi Petrochemical Company Limited
Mosley T.
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