Room temperature curable organopolysiloxane compositions

Details Room temperature curable organopolysiloxane compositions Room temperature curable organopolysiloxane compositions

2006-04-11

2006-04-11

Robertson, Jeffrey B. (Department: 1712)

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

Synthetic resins

From silicon reactant having at least one...

C528S012000, C528S017000, C528S034000, C528S901000, C524S588000, C524S864000, C524S869000

Reexamination Certificate

active

07026426

ABSTRACT:
A room temperature curable organopolysiloxane composition comprising (A) an organopolysiloxane of HO(SiR12O)nH and/or (R2O)3-mR1mSiO(SiOR12O)nSiR1m(OR2)3-mwherein R1is a monovalent C1–10 hydrocarbon radical, R2is a monovalent C1–6 hydrocarbon radical, n is an integer of at least 10, and m is 0 or 1, (B) a silane compound having at least two hydrolyzable radicals, the remaining radicals being methyl, ethyl, propyl, vinyl or phenyl, and/or a partial hydrolyzate thereof, and (C) an organosilicon compound of (RO)pR13-pSiR3—NH—R4—NH2wherein R1and R2are as defined above, R3is a divalent C1–10 hydrocarbon radical, R4is a divalent aromatic ring-bearing C7–10 hydrocarbon radical, and p is 1, 2 or 3, at least one of the NH and NH2radicals being not directly attached to the aromatic ring in R4, cures into silicone rubber which has improved adherence even upon exposure to hot steam.

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