METHOD OF PREPARING LOW-MOLECULAR POLYMETHYL METHACRYLATE Russian patent published in 1999 - IPC

FIELD: chemistry of polymers. SUBSTANCE: described is method of preparing low-molecular polymethyl methacrylate by radical bulk polymerization in the presence of initiating system and hydroquinone. Initiating system is system comprising tributyl boron and dicyclohexylperoxydicarbonate at molar ratios thereof from 2.1 to 10.1 used in amount of 1.4-3.6% by weight of monomer. Hydroquinone is used in amount of 0.5-3.0 by weight of monomer, and regulating system which is mixture of tributhyl boron with 0.27-0.94 % by weight of α/3- unsaturated carbonyl compound at molar ratio of unsaturated carbonyl compound and tributyl boron from 0.6: 1 to 1.2:1. EFFECT: simplified process and lower molecular weight of the desired product. 2 cl, 14 ex, 1 tbl