Degradable foam and use of same

Details Degradable foam and use of same Degradable foam and use of same

1994-01-27

1995-09-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 95, 521 97, 521182, 521916, C08J 910

Patent

active

054479622

ABSTRACT:
Foams comprising innumerable cells dispersed in thermoplastic polymer compositions substantially consisting of polylactic acid or a copolymer of lactic acid and hydroxycarboxylic acid and having degradable characteristics in the natural environment.
The foams can be used for containers such as food trays and throw away cups comprising molded sheet foam of a thermoplastic and degradable polymer or heat insulating materials and cushioning materials comprising bulk foam.

REFERENCES:
patent: 4181983 (1980-01-01), Kulkarni
patent: 4702917 (1987-10-01), Schindler
patent: 4719246 (1988-01-01), Murdoch et al.
patent: 4766182 (1988-08-01), Murdoch et al.
patent: 5134171 (1992-07-01), Hammel et al.
patent: 5210108 (1993-05-01), Spinu et al.
patent: 5223546 (1993-06-01), Morita et al.
patent: 5238968 (1993-08-01), Morita et al.

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