Air bag sealer silicone rubber composition

• US 20040096673A1
• Filed: 11/13/2003
• Published: 05/20/2004
• Est. Priority Date: 11/14/2002
• Status: Active Grant

• Current Assignee: Shin-Etsu Chemical Company Limited
• Original Assignee: Shin-Etsu Chemical Company Limited
• Inventors: Hara, Hiroyasu, Aketa, Takashi
• Granted Patent: US 7,008,697 B2
• Time in Patent Office: Days
• US Class Current: 428/447
• CPC Class Codes: B60R 2021/23514 coated fabric
• CPC Class Codes: B60R 2021/23595 Sealing
• CPC Class Codes: B60R 21/235 characterised by their material
• CPC Class Codes: C07F 7/1804 Compounds having Si-O-C linkages Si-O-acyl linkages C07F7/1896
• CPC Class Codes: C08K 5/5477 containing nitrogen in a heterocyclic ring
• CPC Class Codes: C08L 2666/44 Silicon-containing compounds
• CPC Class Codes: C08L 83/00 Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
• CPC Class Codes: C09J 183/04 Polysiloxanes
• CPC Class Codes: Y10T 428/31663 As siloxane, silicone or silane

Abstract

When silicone rubber-impregnated and/or coated fabric pieces are mated, with their treated surfaces inside, and joined along a periphery to form a bag, a silicone rubber composition having a tris(trialkoxysilylalkyl) isocyanurate blended as an adhesion promoter is used as a sealer where the peripheral portions of the fabric pieces are joined together whereby an improved bond is established therebetween.

Claims

1. In connection with a process of preparing an air bag by laying a pair of base fabric pieces impregnated and/or coated with silicone rubber one on the other, with the impregnated or coated surfaces of the pieces inside, and joining peripheral portions of the pieces together to form a bag,

a silicone rubber composition for use as a sealer to be applied to the peripheral portions of the base fabric pieces, the composition comprising a compound having the general formula (1):

wherein R¹ is an alkylene radical having 1 to 6 carbon atoms and R² is a methyl, ethyl or propyl radical.

2. The silicone rubber composition of claim 1, comprising

(A) 100 parts by weight of an organopolysiloxane containing on average at least two silicon atom-bonded alkenyl radicals in a molecule,

(B) an organohydrogenpolysiloxane containing at least two silicon atom-bonded hydrogen atoms in a molecule, in an amount to give 0.5 to 5.0 silicon atom-bonded hydrogen atoms per alkenyl radical in the organopolysiloxane (A),

(C) a catalytic amount of a platinum group metal catalyst, and

(D) 0.1 to 10 parts by weight of the compound of formula (1).

3. The silicone rubber composition of claim 2, further comprising (E) 0.01 to 5 parts by weight of a titanic acid ester per 100 parts by weight of the organopolysiloxane (A).