COMPOSITION FOR RADIATION CHEMICAL CROSS LINKING Russian patent published in 1997 - IPC

FIELD: radiation modification of polymeric materials, more particularly polyethylene compositions for radiation chemical cross linking. SUBSTANCE: the claimed composition comprises thermostabilizer in amount not higher than 1.0 wt% and combined radiation chemical cross linking. The combined sensitizer is combination of dimaleimides with stearic acid salts. DImaleimides are methaphenylene dimaleimide or dithiodiphenylene dimaleimide and stearic acid salts are sodium, potassium or magnesium stearates. The claimed composition also comprises desired additives such as elastomers, light stabilizers, fillers, and dyes. The ratio of components are as follows (wt%): 1.0 thermostabilizer; 0.5-2.0 dimaleimide; 0.25-0.5 stearic acid salt; 0.5-26.0; and the polyethylene balance. High ability of the claimed composition to radiation chemical cross linking makes it possible to increase operating efficiency of radiation equipment. EFFECT: improved properties of the composition. 2 cl, 2 tbl