Degradable films

Details Degradable films Degradable films

1993-05-17

1995-01-24

Buffalow, Edith

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428328, 428500, 523126, 524398, 47 9, B32B 702

Patent

active

053841832

ABSTRACT:
There is a need for degradable films, particularily in agricultural mulch applications. The present invention provides for films having a controlled life from 30 to 160 days. The film comprises photodegradable sheet material having a thickness from 0.1 to 10, preferably, from 0.2 to 5, most preferably from 0.3 to 1.0, mils and comprising a polyolefin sheet and from 50 to 1,000 parts per million of cerium salt of a C.sub.16-20 fatty acid and from 1,000 to 20,000 parts per million of titanium dioxide having a particle size less than 0.05 microns.

REFERENCES:
patent: 3867324 (1975-02-01), Clendinning
patent: 4705816 (1987-11-01), Pole
patent: 5096941 (1992-03-01), Harnden

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