GB189236A - Improvements in starch preparations - Google Patents
Improvements in starch preparationsInfo
- Publication number
- GB189236A GB189236A GB2277521A GB2277521A GB189236A GB 189236 A GB189236 A GB 189236A GB 2277521 A GB2277521 A GB 2277521A GB 2277521 A GB2277521 A GB 2277521A GB 189236 A GB189236 A GB 189236A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- class
- extract
- tanning
- jelly
- 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
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/10—Vegetable tanning
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicines Containing Plant Substances (AREA)
Abstract
A starchy-tannin preparation is made by heating starch with a tannin extract, at or near the boiling-point of the liquor, but well above 180 DEG F., if necessary with the addition of a weak acid until the starch is highly dispersed beyond the jelly stage, that is it remains in the form of a colloidal solution and does not form a jelly on cooling. Tanning extracts of the pyrogallol class, such as chestnut wood, oakwood and myrabolams, can be used without acid, while those of the catechol class, for example, mimosabark and quebracho, require the more vigorous treatment. Weak acids specified are such as acetic, lactic, sulphonic acids and sulphur dioxide. Gallic and tannic acids may be substituted for the mixture of acid and tanning material. According to examples, Japanese farina is dispersed by vigorous boiling with myrabolam extract, with quebracho extract and sodium bisulphite or with mimosa-bark and gallic acid. The preparation is applicable for tanning hides or according to the Provisional Specification for pharmaceutical purposes. Specification 110,470, [Class 76, Leather] is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2277521A GB189236A (en) | 1921-08-27 | 1921-08-27 | Improvements in starch preparations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2277521A GB189236A (en) | 1921-08-27 | 1921-08-27 | Improvements in starch preparations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB189236A true GB189236A (en) | 1922-11-27 |
Family
ID=10184869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2277521A Expired GB189236A (en) | 1921-08-27 | 1921-08-27 | Improvements in starch preparations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB189236A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE955091C (en) * | 1955-02-05 | 1956-12-27 | Diamalt Ag | Filling of leather |
| CN102409114A (en) * | 2011-09-21 | 2012-04-11 | 宁波工程学院 | Damp effect technology for pretreatment before combination tannage of metal salts and tannin extract |
-
1921
- 1921-08-27 GB GB2277521A patent/GB189236A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE955091C (en) * | 1955-02-05 | 1956-12-27 | Diamalt Ag | Filling of leather |
| CN102409114A (en) * | 2011-09-21 | 2012-04-11 | 宁波工程学院 | Damp effect technology for pretreatment before combination tannage of metal salts and tannin extract |
| CN102409114B (en) * | 2011-09-21 | 2014-12-17 | 宁波工程学院 | Damp effect technology for pretreatment before combination tannage of metal salts and tannin extract |
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