发明名称 |
BIODEGRADABLE CELLULOSE ESTER COMPOSITION AND ARTICLE |
摘要 |
<p>The composition comprising a cellulose ester including at least 10 weight o of a low-substituted cellulose ester having an average degree of substitution not exceeding 2.15 and giving a 4-week decomposition rate of at least 60 weight % as determined using the amount of evolution of carbon dioxide as an indicator in accordance with ASTM D5209. The composition may contains a plasticizer, an aliphatic polyester, a photolysis accelerator such as anatase type titanium dioxide or a biodegradation accelerator such as organic acids and their esters. The low-substituted cellulose ester may be a cellulose ester having an average degree of polymerization from 50 to 250, an average degree of substitution from 1.0 to 2.15 and a residual alkali metal/alkaline earth metal-to-residual sulfuric acid equivalent ratio of 0.1 to 1.1. The biodegradable cellulose ester composition is suitable for the manufacture of various articles including fibrous articles such as tobacco filters.</p> |
申请公布号 |
CA2102927(C) |
申请公布日期 |
2000.03.28 |
申请号 |
CA19932102927 |
申请日期 |
1993.11.12 |
申请人 |
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发明人 |
ITOH, MASANORI;KIYOSE, ATSUNOBU;HIRAO, KATSUMI |
分类号 |
A24D3/10;C08L1/10;C08L1/12;C08L67/00;(IPC1-7):C12N11/00;C08B5/00;C08B3/00 |
主分类号 |
A24D3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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