Biodegradable plastic materials, method of producing them, and t

Details Biodegradable plastic materials, method of producing them, and t Biodegradable plastic materials, method of producing them, and t

1992-07-02

1994-12-27

Nutter, Nathan M.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 38, 524 39, 524176, 524174, 362161, 431289, 431350, C08L 110, C08L 120, C08L 114, C08K 500

Patent

active

053767080

ABSTRACT:
A biodegradable plastic material based on cellulose esters and possibly biodegradable carboxylic acid esters, glycol esters or glycol ethers as softener, composed of from about 50 to about 90 weight percent cellulose ester, from about 5 to about 40 weight percent softener, from about 5 to about 30 weight percent polyester and from about 0.5 to about 5 weight percent AQ-nylon. The biodegradable plastic material may also contain organic acids and/or acid esters and/or ethers different from the softener, and other additives, such as flame inhibitors, and is distinguished by excellent biodegradability, injection molding and blow molding characteristics. Also disclosed are articles made of the material of the invention and methods of making such articles. It is preferably molded into thin sheets and transparent plastic articles, preferably into enclosures/containers for oil lamps, eternal flame oil candles, composition lights, other cemetery light designs, votive lights and thin sheets.

REFERENCES:
patent: 2423823 (1947-07-01), Baker
patent: 3992337 (1976-11-01), Kraft et al.
patent: 4729793 (1988-03-01), Eckenboff et al.
patent: 4731122 (1988-03-01), Cortese et al.
Modern Plastics Encyclopedia '92, Mid-Oct. 1991 Issue, vol. 68, No. 11, pp. 382, 383, and 392.
Kirk-Othmer Encyclopedia of Chemical Technology, Third Edition, vol. 16, p. 472 (1981).
Chemical Abstracts, Band 85, vol. 18, 1976, p. 425, Potts et al., (85: 1030108g).

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