Curable composition having improved adhesion

Details Curable composition having improved adhesion Curable composition having improved adhesion

2011-03-22

2011-03-22

Gulakowski, Randy (Department: 1766)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

C528S034000, C528S035000, C528S038000, C525S475000, C525S477000

Reexamination Certificate

active

07910681

ABSTRACT:
There is provided a curable composition having good adhesion by using a non-organotin catalyst.The curable composition comprises (A) an organic polymer having a silicon-containing group being capable of crosslinking by forming siloxane bonds and (B) one or more kinds selected from a titanium catalyst, an aluminum catalyst and a zirconium catalyst, and is characterized in that a stress at 50% tension is within a range from 0.01 MPa to 0.20 MPa, when determined by adding and mixing 1.5 parts of tin octylate, 0.25 part by weight of laurylamine and 0.6 part by weight of pure water to 100 parts by weight of the component (A), subjecting the mixture to centrifugal defoaming, pouring the mixture carefully into a polyethylene frame not to mix air bubbles thereto, aging the mixture at 23° C. for one hour, and further at 70° C. for 20 hours, punching the obtained 3 mm thick cured sheet according to JIS K6251 to obtain No. 3 dumbbell, and carrying out a tension test (tensile speed: 200 mm/min) at 23° C. at 50% RH.

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