Air bag coating composition and air bag
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsYoshio Inoue, Kazuma Momii
Life of this patent
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Abstract
An air bag coating composition is obtained by emulsifying (A) an organopolysiloxane containing at least two alkenyl groups each attached to a silicon atom, (B) an organohydrogenpolysiloxane containing at least three hydrogen atoms each attached to a silicon atom, and (C) a curing catalyst in water in the presence of an emulsifier to form an aqueous silicone emulsion. The composition cures into a coating which firmly adheres to an air bag base fabric and provides a tack-free surface.
Claims12
An air bag comprising a base fabric having thereon a coating obtained by curing an aqueous silicone emulsion coating composition comprising
- (A) 100 parts by weight of an organopolysiloxane containing at least two alkenyl groups each attached to a silicon atom in a molecule and having a viscosity of at least 300 centistokes at 25.degree. C.,
- (B) 0.5 to 30 parts by weight of an organohydrogenpolysiloxane containing at least three hydrogen atoms each attached to a silicon atom in a molecule, and
- (C) a catalytically effective amount of a curing catalyst
- (D) 0.3 to 20 parts by weight of an emulsifier, and
- (E) 25 to 600 parts by weight of water.
A method of preparing an air bag comprising the steps of
- applying to an air bag fabric an air bag composition in the form of an aqueous silicone emulsion comprising
- (A) an organopolysiloxane containing at least two alkenyl groups each attached to a silicon atom in a molecule and having a viscosity of at least 300 centistokes at 25.degree. C.,
- (B) an organohydrogenpolysiloxane containing at least three hydrogen atoms each attached to a silicon atom in a molecule, and
- (C) a curing catalyst, and
- curing the air bag composition to form a cured coating having firm adhesion to the air bag fabric and a tack-free surface.
Dependencies are inferred from the claim text.