Polylactic acid solid composition and method for producing the same
US12084541B2 · kind B2 · utility
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Key dates
| Filing date | Mar 30, 2020 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Jun 3, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/262
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polylactic acid solid composition includes: a polylactic acid having a weight average molecular weight of not more than 40,000, which is measured in terms of polystyrene standard by GPC; and a basic compound of an alkali metal or an alkaline earth metal, which is a residue of a molecular weight reduction accelerator. The basic compound is contained in an amount in a range of 0.5 to 20 mass %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.