Method of producing biodegradable starch-based product from unpr

Details Method of producing biodegradable starch-based product from unpr Method of producing biodegradable starch-based product from unpr

1993-01-29

1994-06-21

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 52, 524394, 524451, B29C 4900

Patent

active

053228669

ABSTRACT:
This invention discloses a method of preparing and extruding biodegradable starch blends into biodegradable products in such a way that preprocessing steps, such as gelatinizing or destructurizing of the starch, are not required. Unprocessed raw starch is combined with biodegradable copolymers such as polyvinyl alcohol (PVOH), or ethylene vinyl alcohol (EVOH), a nucleating agent, and a plasticizer. The combination may be processed using a twin-screw mixer, and blown into a film. The method described in this invention alleviates pre-preparation steps, reduces the cost and time required to prepare and extrude starch-based biodegradable materials, eliminates the need to use expensive pre-processed starch, and results in a substantially completely biodegradable product.

REFERENCES:
patent: 3661154 (1972-05-01), Torr
patent: 4016117 (1977-04-01), Griffin
patent: 4021388 (1977-05-01), Griffin
patent: 4172054 (1979-10-01), Ogawa et al.
patent: 4218350 (1980-08-01), Griffin
patent: 4324709 (1982-04-01), Griffin
patent: 4337181 (1982-06-01), Otey et al.
patent: 4454268 (1984-06-01), Otey et al.
patent: 4536532 (1985-08-01), Miller et al.
patent: 4722815 (1988-02-01), Shibanai
patent: 4725657 (1988-02-01), Shibanai
patent: 4839450 (1989-06-01), Fanta et al.
patent: 4891404 (1990-01-01), Narayan et al.
patent: 4957790 (1990-09-01), Warren
patent: 4975469 (1990-12-01), Jacoby et al.
patent: 4983651 (1991-01-01), Griffin
patent: 5051266 (1991-09-01), Juhl et al.
patent: 5056931 (1991-10-01), Williams
patent: 5070122 (1991-12-01), Vanderbilt et al.
patent: 5078667 (1992-01-01), Williams
patent: 5087650 (1992-02-01), Willett
patent: 5091262 (1992-02-01), Knott et al.
patent: 5095054 (1992-03-01), Lay et al.
patent: 5106545 (1992-04-01), Warren
patent: 5108807 (1992-04-01), Tucker
patent: 5111933 (1992-05-01), Di Biasi et al.
patent: 5112903 (1992-05-01), Sakakibara et al.
patent: 5115000 (1992-05-01), Jane et al.
patent: 5126109 (1992-06-01), Saitoh
Stenhouse et al., "Blown Film From Starch/Poly (Vinyl Alcohol) and Starchhylene-Vinyl Alcohol Blends," Am. Chem. Soc. Preprint 33: 532-533, (Aug. 17, 1992).
Pool, "Wooden You Love Biodegradable Plastics?," Science 257: 1479-1480 Sep. 1992.

Affiliated with

Also associated with

Rating

Method of producing biodegradable starch-based product from unpr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing biodegradable starch-based product from unpr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing biodegradable starch-based product from unpr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2220973