Title:
CUSHIONING MATERIAL
Document Type and Number:
Japanese Patent JP3311371
Kind Code:
B2
Abstract:
PURPOSE: To provide a cushioning material degradable in the natural environment, consisting of a thermoplastic polymer composition mainly comprising polylactic acid or a copolymer of lactic acid and a hydroxycarboxylic acid.
CONSTITUTION: The objective cushioning material consists of a thermoplastic polymer composition mainly comprising polylactic acid or a copolymer of lactic acid (pref. L-lactic acid and/or D-lactic acid) and a hydroxycarboxylic acid. When embedded underground or discarded to the sea or river as a waste, this cushioning material can be degraded into nontoxic water and carbon dioxide within a short period of time in the natural environment similarly to the cases with natural matter such as paper or wood. The above hydroxycarboxylic acid is pref. glycolic acid.
Inventors:
Kazuhiko Suzuki
Takayuki Watanabe
Yasuhiro Kitahara
Masanobu Ajioka
Takayuki Watanabe
Yasuhiro Kitahara
Masanobu Ajioka
Application Number:
JP30058791A
Publication Date:
August 05, 2002
Filing Date:
November 15, 1991
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C08G63/08; C07C59/06; C07C59/08; C08J9/14; C08L67/00; (IPC1-7): C08J9/14
Domestic Patent References:
| JP4304244A | ||||
| JP5508669A |
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