Patent ID: 9682916
Date: 2017-06-20
CPC Classifications: C07C,C08F,C09D

Claim:
1. A multifunctional acrylic product having a mean functionality of acrylate groups per mole of product greater than 3 and a density of groups from 4 to 12 mmol per g of said product, produced by esterification and etherification, via Michael addition reaction, between at least one polyol R(OH) m with a functionality m of at least 3, and acrylic acid (R 1 OH), with a ratio of carboxyl groups of acrylic acid to hydroxyl groups of said polyol having a value of from ⅔ to 0.95, and which final product comprises at least three acrylates according to formula (I) and corresponding to n=0, n=1, and n=2: with R 1 being the acryloyl radical (—(C═O)—CH═CH 2 ), R being the residual radical of said polyol R(OH) m and n is the number of ether-ester repeating units obtained by Michael addition of residual OH groups of hydroxylated acrylate esters formed by partial esterification of said polyol by Michael addition on the acrylate groups of said acrylate esters.