Novel cellulose derivative, process for preparing the same and sulfur dioxide gas permselective membrane comprising the same
This patent relates to a novel cellulose derivative and a sulfur dioxide gas permselective membrane comprising the same, and particularly to hydrocarbylsulfinylethyl cellulose, a process for preparing the same and the sulfur dioxide gas permselective membrane comprising the same. An object of the present invention is to provide hydrocarbylsulfinylethyl cellulose which is a novel cellulose derivative and useful as a material for the sulfur dioxide gas permselective membrane and a process for preparing the same. Another object of the present invention is to supply a novel sulfur dioxide gas permselective membrane having an excellent sulfur dioxide gas permselectivity. The present invention provides hydrocarbylsulfinylethyl cellulose. The novel hydrocarbylsulfinylethyl cellulose of the present invention indicates markedly high sulfur dioxide gas permselectivity compared with the conventional cellulose derivatives, for example, cellulose acetate, ethyl cellulose, etc. Accordingly, the sulfur dioxide gas permselective membrane of the present invention can be utilized for separation, purification of sulfur dioxide gas from a gas mixture such as air or for concentration of sulfur dioxide gas in a gas mixture, and is highly practical in industrial use. More specifically, the sulfur dioxide gas permselective membrane is useful for, for example, removal of harmful sulfur dioxide gas from discharged gases from the viewpoint of environmental protection and purification of starting gases for synthesis, etc. from the viewpoint of industrial production. Further, the hydrocarbylsulfinylethyl cellulose of the present invention is useful for a thickening agent, binder, protective colloidal agent, etc.
- Assignee:
- Shin-Etsu Chemical Co., Ltd., Tokyo
- Patent Number(s):
- US 4694077
- OSTI ID:
- 5775102
- Resource Relation:
- Patent File Date: Filed date 2 Sep 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CELLULOSE
DERIVATIZATION
REACTION INTERMEDIATES
SULFUR DIOXIDE
CHEMICAL PREPARATION
CARBON
CHEMICAL COMPOSITION
ETHYL RADICALS
GLUCOSE
HYDROGEN
HYDROXY COMPOUNDS
MEMBRANES
MOLECULAR STRUCTURE
PHENYL RADICALS
ALDEHYDES
ALKYL RADICALS
ARYL RADICALS
CARBOHYDRATES
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HEXOSES
MONOSACCHARIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYSACCHARIDES
RADICALS
SACCHARIDES
SULFUR COMPOUNDS
SULFUR OXIDES
SYNTHESIS
400201* - Chemical & Physicochemical Properties