Abstract
The simplest approach to the chemical modification of polymethacrylates is by modifying copolymeric additives containing a basic nitrogen atom, by neutralizing this nitrogen atom with various heteroorganic acids such as dithiophosphoric sulfonic acids, which are used as intermediates in the synthesis of additives for various purposes. Reports on the synthesis of oil-soluble copolymers of high esters of methacrylic acid and diethylaminoethyl methacrylate modified with heteroorganic acids with various structures: sulfonated ethyl laurate, a C/sub 8/-C/sub 12/ dialkylphenosulfonic acid, and C/sub 8/-C/sub 10/-dialkydithiophosphoric and bis(C/sub 8/-alkylphenyl) dithiophosphoric acids. Determines the properties of the polymethacrylate additives in ASV-5 and M-11 oils. Finds that modification of the copolymers with heteroorganic acids leads to a substantial increase in their solubilizing power.
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