US 7,608,657 B2Granted

Liquid silicone rubber coating agent composition and air bag using the composition

AssigneeShin-Etsu Chemical Co., Ltd.

InventorsHidenori Mizushima, Masayuki Ikeno

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Abstract

Provided is a liquid silicone rubber coating agent composition, including: (A) an organopolysiloxane containing at least two silicon atom-bonded alkenyl groups within each molecule, (B) an organohydrogenpolysiloxane containing at least two silicon atom-bonded hydrogen atoms within each molecule, (C) an addition reaction catalyst, (D) a gelled silica with a BET specific surface area within a range from 260 to 500 m2/g and an average particle size within a range from 0.5 to 20 μm, and (E) an adhesion improver. Also provided is an air bag with a rubber coating layer including a cured product of the above composition. The liquid silicone rubber coating agent composition yields a cured product with excellent properties of adhesion to fiber, rubber strength, and blocking resistance.

Claims11

Dependent claims

A liquid silicone rubber coating agent composition, comprising:

(A) 100 parts by mass of an organopolysiloxane containing at least two alkenyl groups bonded to silicon atoms within each molecule,
(B) an organohydrogenpolysiloxane containing at least two hydrogen atoms bonded to silicon atoms within each molecule, in sufficient quantity to provide from 1 to 7 mols of hydrogen atoms bonded to silicon atoms within said composition for each 1 mol of alkenyl groups bonded to silicon atoms within said composition,
(C) an effective quantity of an addition reaction catalyst,
(D) a combination of 1 to 50 parts by mass of a gelled silica with a BET specific surface area within a range from 400 to 500 m2/g and an average particle size within a range from 10 to 20 μm, and a silica filler other than the gelled silica, and
(E) 0.1 to 10 parts by mass of an adhesion improver.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/332,216Filed 17 Jan 2006
Priority: JP 2005-01008218 Jan 2005
Published: US 2006/0159935 A120 Jul 2006
Granted: 27 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

D06N 3/0063
Characterised by the compounding ingredients of the macro-molecular coating: inorganic compounding ingredients, e.g. metals, carbon fibres,…
C09D 183/04
Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing…:…
D06M 11/79
With silicon or compounds thereof: with silicon dioxide, silicic acids or their salts
D06M 15/643
Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds: containing silicon in the main chain

Family

US 2006/0159935 A1Pre-grant publication · published 20 Jul 2006
US 7,608,657 B2This patent

From the US filing history. Foreign family members aren’t listed.

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