GB317855A - Manufacture of artificial silk - Google Patents
Manufacture of artificial silkInfo
- Publication number
- GB317855A GB317855A GB25486/29A GB2548629A GB317855A GB 317855 A GB317855 A GB 317855A GB 25486/29 A GB25486/29 A GB 25486/29A GB 2548629 A GB2548629 A GB 2548629A GB 317855 A GB317855 A GB 317855A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- silk
- artificial silk
- acetic acid
- acetyl
- 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)
- Artificial Filaments (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
317,855. Naamlooze Vennootschap Fabriek van Chemische Producten, (Assignees of Elgersma, J. N.). Aug. 24, 1928, [Convention date]. Cellulose carboxylates and processes for making filaments therefrom.-Artificial silk consisting of acetyl nitro-celluloses of high stability and high acetyl content is prepared by acetylating partlynitrated cellulose with sulphuric acid or derivative thereof as a catalyst; removing the excess of acetic anhydride after the acetylation process is completed, by addition of the equivalent quantity of water or an alcohol; allowing the mixture to stand until all the sulphuric acid in the esterified cellulose is replaced by acetic acid, as described in Specification 317,854; filtering the liquid, preferably after removing free sulphuric acid by adding the equivalent quantity of sodium acetate, and spinning into a spinning bath containing, for example, aqueous acetic acid. The artificial silk possesses high tensile strength, gloss, elasticity, and waterproof properties greater than those of artificial silk prepared from primary acetyl cellulose, whilst it is only slightly more inflammable than such silk. Any waste silk may be dissolved in concentrated acetic acid and added to the spinning solutions.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL317855X | 1928-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB317855A true GB317855A (en) | 1930-10-16 |
Family
ID=19783869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25486/29A Expired GB317855A (en) | 1928-08-24 | 1929-08-21 | Manufacture of artificial silk |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB317855A (en) |
-
1929
- 1929-08-21 GB GB25486/29A patent/GB317855A/en not_active Expired
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