METHYLPROPYL KETONE PEROXIDE COMPOSITIONS AND THEIR USING IN METHODS FOR HARDENING RESINS BASED ON UNSATURATED POLYESTERS Russian patent published in 2006 - IPC C07C409/22 C08K5/14 C08L67/06 

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to compositions comprising methylpropyl ketone peroxide that provide safety work at environment temperature values. Invention proposes methylpropyl ketone peroxide compositions comprising above 60 wt.-% of methylpropyl ketone peroxide of type-4 (as measured for mass of active oxygen of methylpropyl ketone peroxide of type-4 for the full mass of active oxygen of all methylpropyl ketone peroxides) wherein abovementioned methylpropyl ketone peroxide of type-4 represents above 25 wt.-% of the total composition mass, and an anhydrous retarder in the amount providing safety of work and transporting at temperature 0-50°C based on test for self-accelerating degradation, Dutch test in autoclave and Kenen's test, and to a method for hardening resin based on unsaturated polyester by using in the amount from 0.1 to 8 wt.-% as measured for resin of the proposed peroxide composition.

EFFECT: improved and valuable properties of composition.

9 cl, 6 tbl, 24 ex