Cellulose resin composition and cellulose resin film
US8668771B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2010 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Apr 14, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2301/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided are a cellulose resin composition which can give a cellulose ester film free from the problems with bleeding and has excellent moisture permeability, even when containing a plasticizer in a relatively large amount, and a cellulose resin film which is obtained from the cellulose resin composition.The present invention relates to a cellulose resin composition obtained by adding (A) a polyester plasticizer to a cellulose resin. The aforementioned (A) polyester plasticizer is obtained from a polybasic acid, a glycol and a stopper, wherein 70 to 30 mol % of the aforementioned polybasic acid is a succinic acid and/or an adipic acid; 30 to 70 mol % of the aforementioned polybasic acid is at least one selected from a group consisting of a terephthalic acid, a phthalic acid and an isophthalic acid; the aforementioned glycol is at least one selected from a group consisting of an ethylene glycol, a 1,2-propylene glycol, a 1,3-butanediol and a 2-methyl-1,3-propanediol; the aforementioned stopper is an acetic acid and/or a benzoic acid; and the weight-average molecular weight is 600 to 2,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.