Fluorosilicone rubber compound and rubber part for use near cargo plane engines

• US 9,458,306 B2
• Filed: 09/10/2015
• Issued: 10/04/2016
• Est. Priority Date: 09/11/2014
• Status: Active Grant

• Current Assignee: Shin-Etsu Chemical Company Limited
• Original Assignee: Shin-Etsu Chemical Company Limited
• Inventors: Hayashida, Osamu, Kashima, Atsuhito
• Primary Examiner(s): PENG, KUO LIANG
• Application Number:
  US14/850,132
• Publication Number:
  US 20160075853A1
• Time in Patent Office: 390 Days
• US Class Current: 1/1
• CPC Class Codes: C08G 77/20 containing silicon bound to unsaturated aliphatic groups C08G77/045 takes precedence
• CPC Class Codes: C08G 77/24 halogen-containing groups
• CPC Class Codes: C08K 2201/005 Additives being defined by their particle size in general
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08K 3/36 Silica
• CPC Class Codes: C08L 83/08 containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen

Abstract

A fluorosilicone rubber composition is provided. This composition comprises (A) 100 parts by weight of a fluorosilicone rubber compound, (B) 0.1 to 10 parts by weight of an activated carbon at a pH of up to 9, and (C) a catalytic amount of a curing catalyst. The fluorosilicone rubber composition of the invention can be used in producing a fluorosilicone rubber molded article (cured article) which is less likely to experience loss of its physical properties when brought in contact with an amine antiaging agent. Such fluorosilicone rubber molded article is suitable for use in applications such as rubber parts used near cargo plane engines.

Claims

1. A fluorosilicone rubber composition comprising the following components (A), (B) and (C):

(A) 100 parts by weight of a fluorosilicone rubber compound,

(B) 0.1 to 10 parts by weight of an activated carbon at a pH of up to 9, and

(C) a catalytic amount of a curing catalyst.

2. The fluorosilicone rubber composition according to claim 1 wherein the fluorosilicone rubber compound (A) comprises

(a) 100 parts by weight of a fluorosilicone raw rubber, and

(b) 2 to 100 parts by weight of a reinforcement silica.

3. The fluorosilicone rubber composition according to claim 1 wherein the activated carbon (B) has an average particle size of up to 80 μ

m.

4. A rubber part to be used near cargo plane engines comprising a fluorosilicone rubber cured product obtained by curing the fluorosilicone rubber composition of claim 1.