Improvements in or relating to nitric acid esters of cellulose and process of preparing same
Cellulose is nitrated with mixtures containing up to 94 per cent of nitric acid, 3.3. per cent or more of magnesium nitrate and 2.65 per cent or more of water, the ratio of magnesium nitrate to water being not less than 1.2 : 1 and not more than 2.2 : 1, and preferably in the range 1.3 : 1 to 2 : 1....
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| creator | PLUNKETT WARREN LEE JR. JAMES GORDON MCMILLAN BRUCE DAVID SIDNEY SPURLIN HAROLD MORTON BENNETT JAMES LEROY BROOKS ROBERT MAURICE |
| description | Cellulose is nitrated with mixtures containing up to 94 per cent of nitric acid, 3.3. per cent or more of magnesium nitrate and 2.65 per cent or more of water, the ratio of magnesium nitrate to water being not less than 1.2 : 1 and not more than 2.2 : 1, and preferably in the range 1.3 : 1 to 2 : 1. The esters prepared in such a manner are washed with fresh nitric acid of 60-75 per cent concentration as the second displacement wash and not as the first displacement wash, as in the process of the parent Specification. |
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JAMES GORDON MCMILLAN</au><au>BRUCE DAVID SIDNEY</au><au>SPURLIN HAROLD MORTON</au><au>BENNETT JAMES LEROY</au><au>BROOKS ROBERT MAURICE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Improvements in or relating to nitric acid esters of cellulose and process of preparing same</title><date>1958-02-12</date><risdate>1958</risdate><abstract>Cellulose is nitrated with mixtures containing up to 94 per cent of nitric acid, 3.3. per cent or more of magnesium nitrate and 2.65 per cent or more of water, the ratio of magnesium nitrate to water being not less than 1.2 : 1 and not more than 2.2 : 1, and preferably in the range 1.3 : 1 to 2 : 1. The esters prepared in such a manner are washed with fresh nitric acid of 60-75 per cent concentration as the second displacement wash and not as the first displacement wash, as in the process of the parent Specification.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR LAUNDERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS POLYSACCHARIDES TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS |
| title | Improvements in or relating to nitric acid esters of cellulose and process of preparing same |
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