Plastic pro-biodegradation additives, biodegradable plastic compositions, and related methods
US11820881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2021 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Aug 7, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A plastic pro-biodegradation additive includes a carrier polymer and a nanostarch compound. The nanostarch compound can include nanostarch with a particle size in a range of about 40 to about 500 nm. The nanostarch compound can include small-size and/or large-size regular starch. The carrier polymer can be a biodegradable polymer. The additive can include: a polysaccharide; an organic filler; one or more of a monosaccharide, a disaccharide and an oligosaccharide; a surfactant; and/or an inorganic filler. The carrier polymer can include a non-biodegradable polymer. Biodegradable plastic compositions and methods of preparing a biodegradable plastic material are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.