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US 6,306,998 B1Granted
Room temperature fast curable composition
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsTsuneo Kimura, Masayuki Ikeno
Life of this patent
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Abstract
Blending (A) a diorganopolysiloxane end-blocked with a hydroxyl group, (B) a hydrolyzable silane having ketoxime, alkoxy, acyloxy, amide or amino groups or a partial hydrolyzate thereof, (C) an organic compound having a C═O group, and (D) an organic compound having a NH2 group gives a condensation curing type composition which is fast and deeply curable at room temperature.
Claims5
A room temperature fast curable composition comprising:
- (A) 100 parts by weight of a diorganopolysiloxane blocked with a hydroxyl group at both ends of its molecular chain and having a viscosity of 25 to 1,000,000 centistokes at 25° C.,
- (B) 2 to 50 parts by weight of a hydrolyzable silane of the following general formula (1):
- R14−nSiXn (1)
- wherein R1 is a monovalent hydrocarbon group, X is independently selected from the group consisting of ketoxime, alkoxy, acyloxy, amide, and amino groups, and n is an integer of 2 to 4, or a partial hydrolyzate thereof,
- (C) at least one organic compound having at least one C═O group in a molecule, in an amount to give 0.001 to 1 mol of the C═O group per 100 parts by weight of component (A), and
- (D) an organic compound having at least one NH2 group in a molecule, in an amount to give 0.001 to 1 mol of the NH2 group per 100 parts by weight of component (A).
3 more elements
Dependencies are inferred from the claim text.