GB354221A - Manufacture of mixed esters of cellulose - Google Patents

Manufacture of mixed esters of cellulose

Info

Publication number
GB354221A
GB354221A GB9511/30A GB951130A GB354221A GB 354221 A GB354221 A GB 354221A GB 9511/30 A GB9511/30 A GB 9511/30A GB 951130 A GB951130 A GB 951130A GB 354221 A GB354221 A GB 354221A
Authority
GB
United Kingdom
Prior art keywords
cellulose
diacetyl
acid
alcohol
acetone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB9511/30A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Celluloid Fabrik AG
Original Assignee
Deutsche Celluloid Fabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche Celluloid Fabrik AG filed Critical Deutsche Celluloid Fabrik AG
Publication of GB354221A publication Critical patent/GB354221A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08BPOLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B7/00Preparation of cellulose esters of both organic and inorganic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Cellulose nitro-carboxylates are prepared by treating a cellulose fatty-acid ester having free hydroxyl groups with p diacetyl orthonitric acid and a dehydrating agent; the diacetyl orthonitric acid may be previously made or formed in the reaction mixture. The degree of nitration is chiefly determined by the amount of dehydrating agent added. According to the examples, (1) diacetyl cellulose is dissolved in a mixture of diacetyl orthonitric acid and glacial acetic acid, and the solution is treated with acetic anhydride and acetic acid while cooling and stirring; the mixed ester is precipitated with water; it is soluble in acetone, methyl ethyl ketone, diacetone alcohol, and a mixture of benzene, alcohol, and acetone; (2) a cooled solution of cellulose dibutyrate in the diacetyl orthonitric acid is treated with acetic anhydride, and the mixed ester then precipitated by addition of water; it is soluble in acetone, methyl ethyl ketone, diacetone alcohol, methyl or ethyl glycol acetate, ethyl or butyl acetate, and mixtures of these with alcohol or benzene; (3) cellulose dipropionate is treated as in example 2; the product is soluble in acetone, diacetone alcohol, ethyl glycol acetate, methyl or ethyl acetate, or mixtures of these with alcohol or benzene. Specification 283,595, [Class 2 (ii), Cellulose &c.], is referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers to Specification 10706/12, [Class 2 (ii), Cellulose &c.]. This reference does not appear in the Specification as accepted.
GB9511/30A 1929-03-25 1930-03-25 Manufacture of mixed esters of cellulose Expired GB354221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE354221X 1929-03-25

Publications (1)

Publication Number Publication Date
GB354221A true GB354221A (en) 1931-07-27

Family

ID=6287163

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9511/30A Expired GB354221A (en) 1929-03-25 1930-03-25 Manufacture of mixed esters of cellulose

Country Status (1)

Country Link
GB (1) GB354221A (en)

Similar Documents

Publication Publication Date Title
GB354221A (en) Manufacture of mixed esters of cellulose
US2245208A (en) Process of preparing mixed esters of cellulose containing dicarboxylic acid groups
GB493083A (en) Improvements in preparation of cellulose esters having a high content of propionyl or butyryl
GB347423A (en)
US1880558A (en) Process for the manufacture of ether lactates of cellulose and the product thereof
US2304792A (en) Preparation of high viscosity mixed fatty acid esters of cellulose
GB381991A (en) Improvements relating to the production of cellulose triacetate
GB341147A (en)
GB466356A (en) Improvements relating to the production of pectin
GB652543A (en) Improvements in the manufacture of cellulose esters
GB303136A (en) Process for the esterification of cellulose
GB321575A (en) Process for the manufacture of cellulose esters
GB377795A (en) Improvements in the manufacture and production of cellulose compounds
GB356073A (en) Manufacture of fatty acid esters of cellulose or of derivatives thereof
GB599066A (en) A method of producing starch esters
GB568932A (en) Improvements in or relating to the manufacture of cellulose esters
GB364807A (en) Improvements in or relating to the production of plastic masses from cellulose esters and ethers
GB316593A (en) An improved process for the production of cellulose esters
GB539279A (en) Improvements in or relating to the production of organic esters of cellulose
GB440344A (en) Manufacture of 4-nitroso-diphenylamine derivatives
GB413368A (en) Improvements relating to the manufacture from cellulose esters of artificial products, such as artificial silk, films, plastic masses, intermediate layers for safety glass, laquers and the like
GB681865A (en) Preparation of cellulose esters
GB329704A (en) Manufacture of cellulose esters
GB226142A (en) Process for the purification or dehydration of cellullose esters and ethers used alone or in admixture with organic or inorganic substances
GB539804A (en) Improvements in or relating to cellulose derivatives