Injection moldable biodegradable starch polymer composite
US5162392A · kind A · utility
16Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1990 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Nov 13, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0059
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An injection moldable biodegradable plastic formed of corn starch and low-density polyethylene. Ethylene acrylic acid co-polymer can be included in proportions ranging from 0-10%, by weight, and sodium hydroxide can be utilized to neutralize the acidic portions of the ethylene acrylic acid co-polymer. When no ethylene acrylic acid co-polymer is utilized, glycerol is added. To improve injection molding characteristics, the ethylene acrylic acid co-polymer and polyethylene are premixed before the addition of corn starch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.