GB429728A - Improvements in or relating to a process of making leather-rubber material - Google Patents
Improvements in or relating to a process of making leather-rubber materialInfo
- Publication number
- GB429728A GB429728A GB27158/34A GB2715834A GB429728A GB 429728 A GB429728 A GB 429728A GB 27158/34 A GB27158/34 A GB 27158/34A GB 2715834 A GB2715834 A GB 2715834A GB 429728 A GB429728 A GB 429728A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- leather
- latex
- added
- aluminium sulphate
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L89/00—Compositions of proteins; Compositions of derivatives thereof
- C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
- C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dermatology (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
In the manufacture of material of leather and rubber by mixing leather fibres with an aqueous dispersion of negatively charged rubber particles, the pH value is maintained below 7,8, e.g. between 4,2 and 7,8, during the mixing operation. A small amount of a di- or trivalent cation material, e.g. zinc chloride or aluminium sulphate may be added to the leather some time before the latex. The pH may be maintained by addition of acid, and an acid material such as aluminium sulphate or acetic acid may be added after the latex to complete its precipitation. The latex may be alkaline, in which the ammonia content may have been reduced by air-blowing or treatment with formaldehyde or silica gel, or may be acid, prepared for example as described in Specification 288,268, [Class 70], and may be natural or artificial, normal or concentrated, vulcanized or unvulcanized. Other constituents, such as cellulose from cotton or wood pulp, colouring matter, zinc oxide, vulcanizing agents or accelerators, or anti-oxidants may be added.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US429728XA | 1933-10-10 | 1933-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB429728A true GB429728A (en) | 1935-06-05 |
Family
ID=21924754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27158/34A Expired GB429728A (en) | 1933-10-10 | 1934-09-21 | Improvements in or relating to a process of making leather-rubber material |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE405620A (en) |
DE (1) | DE754358C (en) |
FR (1) | FR779773A (en) |
GB (1) | GB429728A (en) |
NL (1) | NL38840C (en) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB247089A (en) * | 1925-08-04 | 1926-02-11 | Antonio Ferretti | Process for the regeneration of hides, leather and the like from cuttings and leather waste |
GB315413A (en) * | 1928-07-14 | 1930-10-08 | Invenzioni Brevetti Soc | Improvements in or relating to the manufacture of artificial leather |
FR675166A (en) * | 1928-07-14 | 1930-02-06 | Invenzioni Brevetti Anonima So | Artificial leather and its manufacturing process |
FR700287A (en) * | 1929-07-05 | 1931-02-26 | Invenzioni Brevetti Anonima So | Improvements in the manufacture of artificial leather |
GB360017A (en) * | 1929-11-29 | 1931-10-29 | Invenzioni Brevetti Anonima To | Improvements in or relating to the making of sheet material from fibres produced from hides or skins |
FR698386A (en) * | 1929-11-29 | 1931-01-30 | Invenzioni Brevetti Anonima So | Compensated artificial leather and method and apparatus for its manufacture |
GB365564A (en) * | 1929-12-30 | 1932-01-21 | Invenzioni Brevetti Anonima To | Treatment of animal fibres |
US1827356A (en) * | 1929-12-30 | 1931-10-13 | Invenzioni Brevetti Anonima To | Treatment of animal fibers |
AT131246B (en) * | 1930-07-03 | 1933-01-10 | Koetitzer Ledertuch Und Wachst | Stiff caps for footwear. |
FR767590A (en) * | 1933-05-20 | 1934-07-19 | ||
GB447054A (en) * | 1933-11-18 | 1936-05-06 | Bawa Sohlenindustrie | A method and device for producing pressed artificial sheet material of a fibrous nature |
-
0
- BE BE405620D patent/BE405620A/xx unknown
- NL NL38840D patent/NL38840C/xx active
-
1934
- 1934-09-21 GB GB27158/34A patent/GB429728A/en not_active Expired
- 1934-09-27 DE DEI50644D patent/DE754358C/en not_active Expired
- 1934-10-10 FR FR779773D patent/FR779773A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE754358C (en) | 1953-02-09 |
NL38840C (en) | |
FR779773A (en) | 1935-04-12 |
BE405620A (en) |
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