GB436885A - Improved process for the production of mixed esters of polyhydric alcohols and of carbohydrates - Google Patents
Improved process for the production of mixed esters of polyhydric alcohols and of carbohydratesInfo
- Publication number
- GB436885A GB436885A GB11995/34A GB1199534A GB436885A GB 436885 A GB436885 A GB 436885A GB 11995/34 A GB11995/34 A GB 11995/34A GB 1199534 A GB1199534 A GB 1199534A GB 436885 A GB436885 A GB 436885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- ketene
- esterified
- cellulose
- cotton linters
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/16—Preparation of mixed organic cellulose esters, e.g. cellulose aceto-formate or cellulose aceto-propionate
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Mixed esters of polyhydric alcohols, for example cellulose, are prepared by reacting the polyhydric alcohol with ketene in the presence of one or more organic carboxylic acids in amount substantially in excess of the polyhydric alcohol. Examples of suitable polyhydric alcohols are cotton, wood pulp, low esterified or etherified celluloses, sorbitol, glycerol, glucamine, penta-erythritol, inositol, quebrachitol, starches, and sugars. Organic acids specified are formic, propionic, butyric, valeric, caproic, heptoic, lauric, stearic, oleic, palmitic, erucic, linoleic, pyrivic, levulinic, acrylic, crotonic, isovaleric, benzoic, naphthoic, toluic, furoic, chlorobenzoic, picolinic, phenylacetic, cinnamic, linseed oil acids, chinawood oil acids, cottonseed oil acids, and fatty oil acids generally. The following examples are given: (1) Cotton linters are esterified by means of propionic acid and ketene in presence of sulphuric acid. The primary acetate-propionate may be partially hydrolyzed. (2) Cotton linters are mixed with hydrofluoric acid and n-butyric acid, and ketene is passed into the mixture. The cellulose acetate-n-butyrate may be subjected to hydrolysis. (3) Cotton linters are esterified in a mixture containing hydrofluoric acid, pyruvic acid, and ketene. (4) Cotton linters are esterified by means of propionic acid, coconut oil acids, and ketene in the presence of sulphuric acid. The product may be partially hydrolyzed. (5) Monoethyl cellulose is esterified by means of propionic acid and ketene in the presence of sulphuric acid. (6) Cotton linters are pretreated with formic acid and esterified as in the first example. The reaction may be carried out in the presence of solvent or non-solvent diluents. The cellulose esters may be used in the preparation of coating compositions, films, fibres, and plastics, while the products obtained from polyhydric alcohols are suitable for adhesives and plasticizers, and for use in coating and impregnating compositions. The Specification as open to inspection under Sect. 91 refers also to the treatment of cellulose with a mixture of ketene and nitric acid which has been dehydrated by means of acetic anhydride. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US436885XA | 1933-04-20 | 1933-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB436885A true GB436885A (en) | 1935-10-21 |
Family
ID=21928378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11995/34A Expired GB436885A (en) | 1933-04-20 | 1934-04-20 | Improved process for the production of mixed esters of polyhydric alcohols and of carbohydrates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB436885A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2970513A4 (en) * | 2013-03-14 | 2016-11-30 | Celanese Acetate Llc | Naturally derived mixed cellulose esters and methods relating thereto |
-
1934
- 1934-04-20 GB GB11995/34A patent/GB436885A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2970513A4 (en) * | 2013-03-14 | 2016-11-30 | Celanese Acetate Llc | Naturally derived mixed cellulose esters and methods relating thereto |
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