Bellows-type rubber hoses for use in automobiles

Details Bellows-type rubber hoses for use in automobiles Bellows-type rubber hoses for use in automobiles

1994-12-20

1997-07-01

Morgan, Kriellion S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 83, 524368, 524436, C08K 534

Patent

active

056439792

ABSTRACT:
A novel rubber composition is disclosed for use in the preparation of bellows-type rubber hoses for installation in automobile engine compartments. The rubber composition of the present invention contains a chlorinated ethylene-propylene copolymer as base rubber, a triazine-based vulcanizing agent, an acid-acceptor comprising magnesium oxide and hydrotalcite, a sulfur-containing organic carboxylic acid releasing enhancer, and a thioether-based antioxidant heat resistance enhancer. The disclosed bellows-type rubber hoses exhibit excellent heat and ozone resistance, sufficient rigidity to permit a reduction in wall thickness in order to withstand negative pressures associated with automobile engine environments and are amenable to molding with limited impact on releasing characteristics.

REFERENCES:
patent: 4558102 (1985-12-01), Miyata
patent: 4722959 (1988-02-01), Inoue et al.
patent: 4822654 (1989-04-01), Takemura et al.
patent: 4845146 (1989-07-01), Inoue et al.
patent: 4988548 (1991-01-01), Takemura et al.
patent: 5280083 (1994-01-01), Forste et al.

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