Patent ID: 8258090
Filing Date: 2012-09-04
Classification: C08F,C08G,C08L,C10M,C10N

Abstract:
1. Polymers of formula wherein: wherein A′ is a perfluoropolyether chain comprising one or more repeating units selected from the group consisting of (CF a, b, equal to or different from each other, are integers equal to 0 or 1, with the proviso that the block A linked to the end group T-O— has a=1 and the block A linked to the end group T′ has b=0; B is a block formed of units deriving from one or more olefins, wherein at least one of them is homopolymerizable by radical route, having formula: wherein j is an integer from 1 to 5, j′ is an integer from 0 to 4 with the proviso that (j+j′) is higher than 2 and lower than 5; R z is an integer higher than or equal to 2; z′ is 0 or an integer; z, z′ are such that the number average molecular weight of the polymer of formula (I) is in the range 500-500,000; B′ is a block deriving from one or more olefins and having formula (1a), but having at least one of the substituents R the end groups T and T′, equal to or different from each other, are perfluoroalkyls from 1 to 3 carbon atoms, one fluorine atom can be substituted by one chlorine or hydrogen atom; C