Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Patent
1980-01-28
1981-09-22
Lieberman, Allan
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
8181, 8196, 106186, C08J 304, C08J 308, C08L 102
Patent
active
042908159
ABSTRACT:
This invention relates to the use of certain co-solvents in cellulose amine N-oxide solutions, which co-solvents increase the cellulose dissolution rate; lower the temperatures necessary to reasonably form a solution; lower the viscosity of the solution; provide solutions with improved color, amine oxide stability, and cellulose stability, provide a solution with improved flow characteristics; increase solution processability, e.g. wet spinning; permit the replacement of amine oxides by a less expensive co-solvent; and are recoverable and reusable in cellulose dissolution and processing.
The co-solvents of the invention comprise compounds, miscible with cellulose-dissolving amine N-oxides, containing primary, or combinations of primary and secondary, amino groups wherein the amino groups are bonded to alkyl, alicyclic, dialkyl ether or alkyl/alicyclic radical(s) and wherein the number of carbon atoms divided by the number of primary amino groups is approximately equal to or less than 4; or
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patent: 3508941 (1970-04-01), Johnson
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patent: 4196282 (1980-04-01), Franks et al.
Creely et al., Journal of Polymer Science: Polymer Letters Ed., 16: 291-295, (1978).
Turbak et al., A Critical Review of Cellulose Solvents Systems, ACS Symposium, Series 58, ACS Washington, D.C. 1977, pp. 12-24.
Akzona Incorporated
Haeussler H. Walter
Hall Jack H.
Lieberman Allan
Young Francis W.
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