Process for preparing vulcanization promoter for fluorine-contai

Details Process for preparing vulcanization promoter for fluorine-contai Process for preparing vulcanization promoter for fluorine-contai

1998-09-10

1999-11-09

Wood, Elizabeth

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502150, 502151, 502162, 502172, B01J 3118

Patent

active

059814233

ABSTRACT:
A vulcanization promoter for fluorine-containing elastomers prepared by (1) allowing 1.01 to 1.15 moles of a quaternary phosphonium salt to react with one mole of monoalkali metal salt of bisphenol AF in alcohol, (2) allowing 2.02 to 2.30 moles of a quaternary phosphonium salt to react with one mole of a dialkali metal salt of bisphenol AF in alcohol, (3) allowing one mole each of an alkali metal alkoxide and bisphenol AF to react with 1.01 to 1.15 moles of a quaternary phosphonium salt in alcohol or (4) subjecting one mole of bisphenol AF, 1.01 to 1.15 moles of a quaternary phosphonium salt and one mole of an alkali metal alkoxide to reaction in alcohol, each followed by further addition of the bisphenol AF thereto, or (5) allowing 1.01 to 1.15 moles of a quaternary phosphonium salt to react with one of 1/4alkali metal salt of bisphenol AF in alcohol gives much more improved vulcanization characteristics such as vulcanization speed, etc. while maintaining advantageous properties such as distinguished normal state physical properties as observed in case of vulcanization promoters of bisphenol AF-quaternary phosphonium salt series.

REFERENCES:
patent: 4831083 (1989-05-01), Geri et al.
patent: 4912171 (1990-03-01), Grootaert et al.
patent: 5086123 (1992-02-01), Guenthner et al.
patent: 5177148 (1993-01-01), Arcella et al.

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