Composition and method for making foamed polyester resin

Details Composition and method for making foamed polyester resin Composition and method for making foamed polyester resin

1986-03-06

1986-11-18

Foelak, Morton

Compositions

Preservative agents

Anti-corrosion

25218831, 521 72, 521 91, 521 92, 521138, C06D 510

Patent

active

046234780

ABSTRACT:
A composition for foaming polyester which includes a carbonate or bicarbonate salt and water intermixed with a finely divided solid free flow agent such as synthetic amorphous silica. The free flow agent is added in an amount sufficient to absorb all of the water and render the composition a free flowing powder. The composition is readily mixable with an unsaturated polyester resin media. A source of acid in the mixture liberates gas from the carbonate or bicarbonate, and good foam structures having small uniform cells are obtained.

REFERENCES:
patent: 3479303 (1969-11-01), Wiescbollek et al.
patent: 4016112 (1977-04-01), Kajiura et al.
patent: 4028289 (1977-06-01), Brown
patent: 4119583 (1978-10-01), Filip et al.
patent: 4122047 (1978-10-01), Filip et al.
patent: 4216294 (1980-08-01), Halle et al.
patent: 4347331 (1982-08-01), Self

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