Lactic acid-based polymer laminated product and molded product
US6248430A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Aug 10, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a lactic acid-based polymer laminated product which is little liable to leakage of lactide during molding or storage of the molded product and can degrade at a raised rate and a molded product made of such a laminated product. Disclosed are a novel lactic acid-based polymer laminated product comprising a degradation accelerator barrier layer (II) made of a lactic acid-based polymer (B) having a lactide content of not more than 0.1% by weight laminated on one or both surfaces of a base layer (I) made of a lactic acid-based polymer (A) comprising a degradation accelerator made of lactide and/or organic acid in an amount of from 0.3 to 7% by weight, wherein the ratio of the barrier layer thickness to the base layer thickness is from 0.02 to 1 based on that of the base layer, and a molded product of the laminated product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.