To obtain the subject composition capable of forming a cured resin excellent in resistances to weather and discoloration and useful in applications requiring the resistance to weather by adding a specific amount of a specified benzoate compound to a reactive silicon group-containing organic polymer.
This composition is obtained by adding (B) 0.01-5 pts.wt. of a compound represented by the formula [R1 and R2 are each H, a 1-8C (cyclo) alkyl, a 6-12C (alkyl)aryl or a 6-12C arylalkyl; R3 is a 1-30C alkyl, a 6-30C (alkyl)aryl or a 6-30C arylalkyl] (e.g. hexadecyl 4-hydroxy-3,5-di-t-butylbenzoate) and, as necessary, further (C) a hindered amine-based light stabilizer (e.g. 2,2,6,6- tetramethyl-4-piperidyl stearate) to (A) 100 pts.wt. of a reactive silicon group- containing organic polymer.
KONO TOSHINORI
FUKUSHIMA MITSURU
FUKUDA ATSUSHI
