GB354221A - Manufacture of mixed esters of cellulose - Google Patents
Manufacture of mixed esters of celluloseInfo
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B7/00—Preparation 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.
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) |
-
1930
- 1930-03-25 GB GB9511/30A patent/GB354221A/en not_active Expired
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