Films containing poly(hydroxy acid)s

Details Films containing poly(hydroxy acid)s Films containing poly(hydroxy acid)s

1995-05-09

2000-02-22

Short, Patricia A.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264211, 2642112, 524539, 525186, 525190, 525411, 525412, 525437, 525450, B29C 5512, B29C 7102

Patent

active

060276770

ABSTRACT:
Compatible polymer compositions and optically clear, degradable films containing from 55 to 90 wt % of a poly(hydroxy acid) polymer composition and from 10 to 45 wt % of one or more compatible thermoplastic polymers are disclosed. The films are prepared by melt processing the materials to obtain uniform composition, and forming the composition into a film of thickness from 0.01 to 2 mm. The films can be used in packaging and conventional applications.

REFERENCES:
patent: 3892821 (1975-07-01), Koleske
patent: 4393167 (1983-07-01), Holmes
patent: 4661530 (1987-04-01), Gogolewski
patent: 5076983 (1991-12-01), Loomes et al.
patent: 5180765 (1993-01-01), Sinclair
patent: 5216050 (1993-06-01), Sinclair
patent: 5252642 (1993-10-01), Sinclair

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