Biodegradable foamed plastic materials
US5736586A · kind A · utility
57Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1995 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Aug 8, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Biodegradable foamed plastic material having a bulk density comprised within the range of from 5 to 13 kg/m.sup.3, comprising: PA1 30-99.5 by weight of polisaccharide containing more than 50% of thermoplastic starch or starch complexed by polimeric structures, having an intrinsic viscosity (in DMSO) lower than 1.3 dl/g and less than 20% by weight of soluble fraction in ethanol; PA1 0.5-70% by weight of a thermoplastic polymer which is soluble in starch, or is capable of complexing it; PA1 0-20% by weight of water. The material can be used as a loose filler or for other foamed articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.