GB416826A - Method of production of film base from seaweed - Google Patents
Method of production of film base from seaweedInfo
- Publication number
- GB416826A GB416826A GB220934A GB220934A GB416826A GB 416826 A GB416826 A GB 416826A GB 220934 A GB220934 A GB 220934A GB 220934 A GB220934 A GB 220934A GB 416826 A GB416826 A GB 416826A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dissolved
- dried
- film
- film base
- furfurol
- 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
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A film base suitable for use in photography is prepared in the following manner. Matured brown alga is dissolved in alkali solution, filtered, precipitated with dilute acid, dried, dissolved in ammonia solution and again dried. This forms a starting material which is acetylated by means of acetic anhydride, acetic acid, zinc chloride, and furfurol until it becomes soluble in acetone. The product is washed with water, dried, dissolved in a solvent consisting of a ketone, alcohol, ether, and benzol, and formed into a film in any known film-forming apparatus.ALSO:A film base suitable for use in photography is prepared in the following manner. Matured brown alga is dissolved in alkali solution, filtered, precipitated with dilute acid, dried, dissolved in ammonia solution and again dried. This forms a starting material which is acetylated by means of acetic anhydride, acetic acid, zinc chloride, and furfurol until it becomes soluble in acetone. The product is washed with water, dried, dissolved in a solvent consisting of a ketone, alcohol, ether, and benzol, and formed into a film in any known film-forming apparatus.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB220934A GB416826A (en) | 1934-01-22 | 1934-01-22 | Method of production of film base from seaweed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB220934A GB416826A (en) | 1934-01-22 | 1934-01-22 | Method of production of film base from seaweed |
Publications (1)
Publication Number | Publication Date |
---|---|
GB416826A true GB416826A (en) | 1934-09-21 |
Family
ID=9735509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB220934A Expired GB416826A (en) | 1934-01-22 | 1934-01-22 | Method of production of film base from seaweed |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB416826A (en) |
-
1934
- 1934-01-22 GB GB220934A patent/GB416826A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB416826A (en) | Method of production of film base from seaweed | |
DE839500C (en) | Process for the preparation of nitrophenylserines | |
US2343547A (en) | Organo-mercury compound | |
GB421505A (en) | Method of production of artificial film from seaweed, and the like | |
US1974506A (en) | 3.5 diacetoxy mercuri-4-nitroguaiacol | |
GB181575A (en) | Manufacture of new artificial resin products | |
GB231800A (en) | Manufacture of new cellulose compounds | |
GB258020A (en) | Improvements in or relating to the manufacture of cellulose acetate | |
US1911657A (en) | netherlands | |
GB497746A (en) | Preparation of a complex derivative of gold | |
US2024238A (en) | Cellulose ester containing groups of dicarboxylic acids having heterogeneous linkages and process of making the same | |
GB445399A (en) | Process for preparing optically active trans-ªð-hydroxycamphor from optically active ª‡-ªð-(trans)-dihalogen-camphor | |
GB357061A (en) | Manufacture of bismuth compounds of benzenearsinic-acid-stibinic-acids | |
GB483739A (en) | A process for producing compounds of the paris green type | |
GB350310A (en) | An improvement in the manufacture of cellulose acetate | |
CH231179A (en) | Process for the production of an estrogenic product. | |
GB496065A (en) | Manufacture of improved cellulose esters | |
GB427613A (en) | Process of preparing solutions of cellulose in sulphuric acid and artificial silk threads, films, bands, and such like artificial products thereof | |
GB573648A (en) | Manufacture of hydracrylic acid | |
GB395119A (en) | Process for the manufacture of condensation products from 2.6-diaminopyridine and its derivatives | |
GB210095A (en) | Manufacture of bismuth-compounds | |
GB243361A (en) | Process for the manufacture of colloidal organic mercury compounds soluble in water | |
GB138116A (en) | Improved manufacture of cellulose compounds | |
CH196084A (en) | Process for the production of an antirachitic substance. | |
GB454813A (en) | An improved process for obtaining therapeutically valuable metal compounds of keratinic acids |