Patent ID: 6291620
Filing Date: 2001-09-18
Classification: C08F,C08L

Abstract:
A process for the synthesis of polymers having a polydispersity of less than 1.7 and of the general formula: ##STR7##comprising contacting:(i) a vinyl monomer of the formulaCH.sub.2 =CUV(ii) a vinyl-terminated compound of formula ##STR8##and(iii) free radicals, produced from a free radical source; and increasing the molar amount of said polymers (1) by one or both of:(a) decreasing the molar amount of (iii) for any given conversion of (i); and;(b) decreasing the molar amount of (i) for any given conversion of (iii);and wherein:Q is selected from the group consisting of H, R, OR, O.sub.2 CR, halogen, CO.sub.2 H, CO.sub.2 R, CN, CONH.sub.2, CONHR and CONR.sub.2 ;U is selected from the group consisting of H and R;V is selected from R, OR, O.sub.2 CR, halogen, CO.sub.2 H, CO.sub.2 R, CN, CONH.sub.2, CONHR and CONR.sub.2 ;X is selected from the group consisting of H and R;Y is selected from the group consisting of R, OR, O.sub.2 CR, halogen, CO.sub.2 H, CO.sub.2 R, CN, CONH.sub.2, CONHR and CONR.sub.2 ;Z is selected from the group consisting of H, SR.sup.1, S(O)R, S(O).sub.2 R, R.sup.2 and R.sup.3 ;R is selected from the group consisting of substituted and unsubstituted alkyl, aryl, aralkyl, alkaryl and organosilyl groups wherein the substituent(s) are independently selected from the group carboxyl, epoxy, hydroxyl, alkoxy, amino and halogen;R.sup.1 is selected from the group H, substituted and unsubstituted alkyl, aryl, aralkyl, alkaryl, organosilyl wherein the substituent(s) are independently selected from the group carboxyl, epoxy, hydroxyl, alkoxy, amino and halogen;R.sup.2 is selected from the group consisting of free radical initiator-derived fragments of substituted and unsubstituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl, organosilyl, alkoxyalkyl, alkoxyaryl, sulfate groups wherein the substituent(s) are independently selected from R, OR.sup.1, O.sub.2 CR, halogen, CO.sub.2 H (and salts), CO.sub.2 R, CN, CONH.sub.2, ##STR9##R.sup.3 is selected from the group consisting of radical chain transfer agent-derived fragments of substituted and unsubstituted alkyl, cycloalkyl, aryl, aralkyl, alkaryl, organosilyl, alkoxyalkyl, alkoxyaryl, and PR.sub.2 groups wherein the substituent(s) are independently selected from R, OR.sup.1, SR, NR.sub.2, NHR, O.sub.2 CR, halogen, CO.sub.2 H, CO.sub.2 R, CN, CONH.sub.2, CONHR, and CONR.sub.2 ;m and n are independently .gtoreq.1; andwhen either or both of m and n are greater than 1, the repeat units are the same or different.