3-hydroxybutyrate polymer composition

Details 3-hydroxybutyrate polymer composition 3-hydroxybutyrate polymer composition

1990-05-30

1991-10-29

Nielsen, Earl

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524132, 524133, 524135, 524394, 524396, 524397, 524399, 524400, 524409, 524434, 524436, 524437, 524599, C08L 6704

Patent

active

050617435

ABSTRACT:
Certain hydroxy alkanoate polymers, such as 3-hydroxybutyrate polymers, when obtained by solvent extraction from fermentation masses, can have long cycle times during thermal processing due to a low rate of crystallization. A combination of (a) an organophosphonic or organophosphoric acid or ester with (b) an oxide, hydroxide, or carboxylate of a metal of Groups I to V is an effective nucleating agent.

REFERENCES:
patent: 3594347 (1971-07-01), Lazarus et al.
patent: 3894986 (1975-07-01), Racky et al.
patent: 4038258 (1977-07-01), Singh et al.
patent: 4180495 (1979-12-01), Sandler
patent: 4237034 (1980-12-01), Tomka et al.
patent: 4701518 (1987-10-01), Osborn et al.

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