Polymers having pendant acrylate and methacrylate functionality
AssigneeRohm and Haas Company
InventorsSheldon N. Lewis, Richard A. Haggard
Life of this patent
Estimating the term…
Abstract
Polymers of esters of methacrylic acid having an average chain length of about 6 to about 50 mers are prepared by an anionic polymerization reaction, carried out in the presence of a chain-regulating alcohol and a catalytic amount of an alkoxide anion, in which control of the molecular weight and molecular weight distribution of the polymer are achieved by regulating the ratio of the total quantity of alcohol employed to the total monomer charge. These polymers, their hydrolysis products, or their hydroxyl-containing derivatives are esterified or transesterified to give polymers having pendant acrylate or methacrylate functionality which are useful in formulating films, coatings, inks, and the like.
Claims11
In an anionically polymerized addition polymer of at least one ester of methacrylic acid the improvement wherein the polymer comprises mers having the formula ##STR8## wherein R is an acryloyloxyalkyl or a methacryloyloxyalkyl group, having up to 4 carbon atoms in the alkyl portion, and, optionally, mers derivable from other anionically copolymerizable monomers, and wherein, n, the average chain length of the polymer, is about 6 to 50 mers.
A process comprising the steps (1) preparing an anionically polymerized addition polymer of at least one ester of methacrylic acid, optionally, comprising mers derivable from other anionically copolymerizable monomers, and wherein n, the average chain length of the polymer, is about 6 to 50 mers;
- and (2) introducing pendant acrylate or methacrylate functionality into the polymer.
Dependencies are inferred from the claim text.