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BETA-C    Beta-Carboxyethyl acrylate or 2-Carboxyethyl acrylate   

BETA-C is in the class of carboxylic monomers of the acrylic or methacrylic acid type. A significant difference is the greater separation of the carboxylic acid functionality from the polymerisable vinyl functionality. BETA-C can be polymerised in solution or emulsion to produce acrylic, vinyl-acrylic or styrenic-acrylic polymers with improved adhesive properties. Other key differences compared to conventional carboxylic acid functional materials are:

BETA-C promotes flexibility in polymers owing to lower glass transition of its homopolymers (< 30°C).

BETA-C provides improved adhesion and stability in emulsion polymers, due to its -COOH groups being more available than those in the conventional carboxylic acids.

BETA-C is much more reactive in its salt form than acrylic acid, allowing high levels of incorporation, over a wide pH range.

Owing to its extended chain, BETA-C is more compatible with other monomers, thus reducing aqueous phase polymerisation and producing more uniform copolymers.

Structure

               Molecular weight = 144

Typical Properties

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