Process for shaping low durometer siloxane elastomers containing

Details Process for shaping low durometer siloxane elastomers containing Process for shaping low durometer siloxane elastomers containing

1976-06-03

1978-08-01

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Disparate treatment of article subsequent to working,...

Effecting temperature change

264201, B29C 2500

Patent

active

041043510

ABSTRACT:
When a small amount of polytetrafluoroethylene powder is mixed with certain curable polydiorganosiloxane compositions containing a reinforcing silica and an organic peroxide curing agent and the resulting mixture is extruded and heat-cured, the resulting elastomeric article has a durometer of less than 30 and has a greatly reduced amount of porosity or bubbles.

REFERENCES:
patent: 2644802 (1953-07-01), Lontz
patent: 2710290 (1955-06-01), Suffurd et al.
patent: 3192175 (1965-06-01), Russell
patent: 3449290 (1969-06-01), Foster
patent: 4010136 (1977-07-01), Blizzard et al.

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