Polymers containing thiuram disulfide groups and their preparation
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United States of America Patent
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Aug 19, 1997
Issued Date -
N/A
app pub date -
Dec 18, 1995
filing date -
Sep 14, 1989
priority date (Note) -
Expired
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Abstract
These copolymers are denoted by the formulae: ##STR1## P.sub.1, P.sub.2 =vinyl or dienic (p with a value of 1), or polyoxyalkylene, polyester or polyamide (p with a value of 0) polymer block; A=(1) ##STR2## with R.sub.1 denoting, among others, alkyl; (2) ##STR3## where E, G, J have various meanings; (3) ##STR4## M, joined to D, having the value ##STR5## h, i, Q and R having various meanings; D=a single bond or (cyclo)alkylene or arylene group; n=1 to 20. These polymers are iniferters in radical polymerization of vinyl monomers. The macroiniferters (I) and the polyiniferters (II) result, respectively, in triblock copolymers PA--PB--PA and diblock copolymers .paren open-st.PA--PB.paren close-st..sub.z a, z having a value from 2 to 25.
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