Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-04-20
1994-05-24
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
528272, 528296, 528300, 528301, 528302, 528307, 525437, C08F 2000
Patent
active
053149696
ABSTRACT:
A sheet formed by using as a main component an aliphatic polyester having a melt viscosity of 1.0.times.10.sup.3 -1.0.times.10.sup.6 poises at a temperature of 190.degree. C. and a shear rate of 100 sec.sup.-1, and having a melting point of 70.degree.-190.degree. C. The sheet of the present invention is biodegraded when buried in soil and is excellent in mechanical properties and transparency. The sheet is also superior in non-absorbency of aroma as well as heat-sealability and formability.
REFERENCES:
patent: 2999851 (1961-09-01), Elmer
patent: 4041208 (1977-08-01), Seeger et al.
patent: 4057537 (1977-11-01), Sinclair
patent: 4076798 (1978-02-01), Casey et al.
patent: 4166873 (1979-09-01), Gilliam
patent: 5068143 (1991-11-01), Agger et al.
Imaizumi Mitsuhiro
Iwasa Takeshi
Kondo Haruhiko
Kotani Masataka
Takiyama Eiichiro
Acquah Samuel A.
Showa Highpolymer Co. Ltd.
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