Patent ID: 6218490
Filing Date: 2001-04-17
Classification: C08F,C10L

Abstract:
Copolymers of alkyl acrylates or of alkyl/vinylpyridine acrylates with a weight-average molecular weight M.sub.w between 5000 and 500,000, in which the monomeric acrylate units that participate in the polymer chain are the following units ##STR4##in which R is H or CH.sub.3, andin which Ri are saturated linear aliphatic alcohol Ri-OH group residues where i represents the number of carbons of these groups which extend between 10 and 50 carbon atoms and which have the characteristic of following a distribution law which is the superposition of a ""U"" distribution law in which the i values are even numbers ranging in the upper part of the interval 24-50, the centered value of which is i.sub.u, and the ""non-U"" distribution law in which the I values are even or odd numbers ranging in the low 10-22 part of the interval, and the centered value i.sub.nu of which i.sub.nu <i.sub.u, the weight ratio of all the units ##STR5##distributed according to the ""U"" law to all the units distributed according to the ""non-U"" law ranging from 1:99 to 50:50.