Sun Blueprints Resource Management

Reticulated carboxylic copolymers in powder form, for use as thickening agents in an aqueous medium, and method of preparing same, are composed of 85 to 99% of an unsaturated alpha beta acid such as acrylic acid, methacrylic acid or like substances, and 0.1 to 15% of an acetal of which the initial materials are allyl alcohol and dialdehyde (CH2=CH-CH2-O)2-CH(CH2)n-CH(O-CH2-CH=CH)2 wherein n designates an integer of 0 to 2.