US976977A - Process for obtaining silk fibroin. - Google Patents
Process for obtaining silk fibroin. Download PDFInfo
- Publication number
- US976977A US976977A US46464608A US1908464646A US976977A US 976977 A US976977 A US 976977A US 46464608 A US46464608 A US 46464608A US 1908464646 A US1908464646 A US 1908464646A US 976977 A US976977 A US 976977A
- Authority
- US
- United States
- Prior art keywords
- silk
- fibroin
- silk fibroin
- obtaining
- obtaining silk
- 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 - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L89/00—Compositions of proteins; Compositions of derivatives thereof
Definitions
- CARL Rooonr BAU- MANN silk manufacturer, a subject of the Swiss Confederation, residing at Gavirate, in the Kingdom of Italy, and Gorrmnn Go'rrrnnn) Dmssnn, scientific chemist, a subject of the German Emperor, residing at Zurich,
- the present invention is the result of elaborate experiments with a great variety of solvents, experiments by which it was proved beyond doubt that an excellent method for the production of silk-fibroin, at
- the swelling of the fibroin caused by its treatment with formic acid can be utilized for manufacturlng, out of s1lk and waste s1lk, insulatlng bodies, as bands, ribbons,
- finished silken fabrics can be rendered airand waterproof by being treated with formic acid.
Description
UNITED STATES PATENT OFFICE.
CARL RUDOLF BAUMANN, OF GAVIRATE, ITALY, AND GOT'ILIEB GOTTFRIED DIESSER,
OF ZURICH, SWITZERLAND.
PROCESS FOR OBTAINING SILK FIBROIN.
eraaw. No Drawing.
To all whom it may concern:
Be it known that we, CARL Rooonr BAU- MANN, silk manufacturer, a subject of the Swiss Confederation, residing at Gavirate, in the Kingdom of Italy, and Gorrmnn Go'rrrnnn) Dmssnn, scientific chemist, a subject of the German Emperor, residing at Zurich,
Switzerland, have invented new and useful Improvements in Processes for Obtaining Silk Fibroin, of which improvements detailed account follows.
Besides the methods used by the silk-dyers for scouring the silk, several solvents, acid or alkaline, were hitherto known for the production of silk-fibroin. Some, or even all, of these agents however, effect a more or less fargoing decomposition of the fibroin and thus produce results which have, as it would seem, prevented, to this day, solutions of silk-fibroin from being practically made use of for technical purposes.
The present invention is the result of elaborate experiments with a great variety of solvents, experiments by which it was proved beyond doubt that an excellent method for the production of silk-fibroin, at
ordinary temperatures, consisted in using in the presence of heat.
When the glands are dissolved in formic acid, the serecin remains an undissolved tube. The formic acid solution having been evaporated, a very lustrous thin skin of a somewhat lesser elasticity than that of the Specification of Letters Patent.
Application filed November 27, 1908.
Patented Nov. 29, 1910.
Serial No. 464,646.
fibroin of raw silk as obtained from the scouring trough, but having all the other qualities of the last named fibroin, has resulted. In order then to impart the degree of elasticity still wanting, a preliminary addition is made to the formic solution, of an appropriate substance, for instance, glue,
fish-glue, starch, casein, dextrin, shellac,-
.the swelling of the fibroin caused by its treatment with formic acid. can be utilized for manufacturlng, out of s1lk and waste s1lk, insulatlng bodies, as bands, ribbons,
sticks, plates etc., in order to utilize the reat insulating power of silk. Again, finished silken fabrics can be rendered airand waterproof by being treated with formic acid.
Claims: 1. The-process of obtaining silk-fibroin, which consists in dissolving the spinning glands of silkworms with formic acid, as set forth.
2. The process of obtaining silk fibroin which consists in dissolving the spinning glands of silk Worms with formic acid by the aid of heat.
. CARL RUDOLF BAUMANN.
GOTTLIEB GOTTFRIED DIESSER.
Witnesses LEVAILVLANT, J os. SIMON.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46464608A US976977A (en) | 1908-11-27 | 1908-11-27 | Process for obtaining silk fibroin. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46464608A US976977A (en) | 1908-11-27 | 1908-11-27 | Process for obtaining silk fibroin. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US976977A true US976977A (en) | 1910-11-29 |
Family
ID=3045355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US46464608A Expired - Lifetime US976977A (en) | 1908-11-27 | 1908-11-27 | Process for obtaining silk fibroin. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US976977A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029141A1 (en) * | 2000-10-02 | 2002-04-11 | Consorzio Per Gli Studi Universitari | Method for the preparation of a non-woven silk fibroin fabrics |
-
1908
- 1908-11-27 US US46464608A patent/US976977A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002029141A1 (en) * | 2000-10-02 | 2002-04-11 | Consorzio Per Gli Studi Universitari | Method for the preparation of a non-woven silk fibroin fabrics |
| US20040097709A1 (en) * | 2000-10-02 | 2004-05-20 | Ubaldo Armato | Method for the preparation of a non-woven silk fibroin fabrics |
| US7285637B2 (en) | 2000-10-02 | 2007-10-23 | Consorzio Per Gli Studi Universitari | Method for the preparation of a non-woven silk fibroin fabrics |
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