JPS55165972A - Pretreatment for production of collagen shaped article - Google Patents

Pretreatment for production of collagen shaped article

Info

Publication number
JPS55165972A
JPS55165972A JP7368879A JP7368879A JPS55165972A JP S55165972 A JPS55165972 A JP S55165972A JP 7368879 A JP7368879 A JP 7368879A JP 7368879 A JP7368879 A JP 7368879A JP S55165972 A JPS55165972 A JP S55165972A
Authority
JP
Japan
Prior art keywords
collagen
hide
acetic anhydride
acetylation
treatment
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.)
Pending
Application number
JP7368879A
Other languages
Japanese (ja)
Inventor
Tadaaki Kato
Naohiro Murayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kureha Corp
Original Assignee
Kureha Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kureha Corp filed Critical Kureha Corp
Priority to JP7368879A priority Critical patent/JPS55165972A/en
Publication of JPS55165972A publication Critical patent/JPS55165972A/en
Pending legal-status Critical Current

Links

Landscapes

  • Peptides Or Proteins (AREA)

Abstract

PURPOSE: To improve remarkably the strength, particularly the tear strength of a shaped article produced from collagen, by a method wherein chopped animal hide collagen is acetylated.
CONSTITUTION: Hide is subjected to an unhairing and purifying treatment using a lime treatment or an enzyme treatment technique. the treated hide is chopped into blocks of 3W15mm square, pref. 5W8mm square. The blocks are immersed in acetic anhydride or in a mixed soln. of acetic anhydride and acetic acid to acetylate the hide. By this acetylation treatment, the isoelectric point of cow hide collagen is gradually lowered and becomes constant at a pH of nearly 3.8. The acetylation is carried out to the extent that the pH reaches a level below about 6.2. For example, the acetylation is carried out by immersing 10g of cow hide (dry) in 100ml of acetic anhydride for 3W10hr. It is preferred to keep the temp. at 20°C or below in order to prevent the denaturation of the collagen. The acetylated cow hide collagen is thorougly washed with water to remove acetic anhydride, and then immersed in an aq. HCl soln. having a pH of about 2 for 5W30hr to swell the collagen which is then fibrillated by means of a juice mixer, etc. to form a dispersion having a desired concn.
COPYRIGHT: (C)1980,JPO&Japio
JP7368879A 1979-06-12 1979-06-12 Pretreatment for production of collagen shaped article Pending JPS55165972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7368879A JPS55165972A (en) 1979-06-12 1979-06-12 Pretreatment for production of collagen shaped article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7368879A JPS55165972A (en) 1979-06-12 1979-06-12 Pretreatment for production of collagen shaped article

Publications (1)

Publication Number Publication Date
JPS55165972A true JPS55165972A (en) 1980-12-24

Family

ID=13525397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7368879A Pending JPS55165972A (en) 1979-06-12 1979-06-12 Pretreatment for production of collagen shaped article

Country Status (1)

Country Link
JP (1) JPS55165972A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4732662B2 (en) * 2000-04-06 2011-07-27 セイコーインスツル株式会社 Battery holding structure for electronic watch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4732662B2 (en) * 2000-04-06 2011-07-27 セイコーインスツル株式会社 Battery holding structure for electronic watch

Similar Documents

Publication Publication Date Title
JPS645451A (en) Production clear thickned tea extract
HUP0001820A2 (en) Surface treated additive for portland cement concrete
HU181796B (en) Process for liming of raw hides with respect of the environment
US3194865A (en) Acid depilation and extrudable fibril production from hide corium
WO1991005808A1 (en) Method for manufacture of chitosan and other products from shells of organisms, especially marine organisms
JPS55165972A (en) Pretreatment for production of collagen shaped article
SU493980A3 (en) The way dehairing fur skins
ATE66697T1 (en) METHOD OF TANNING FISH SKINS.
RU2198932C1 (en) Rawstock unhairing method
JP3408321B2 (en) Jellyfish volume reduction method for marine structures
ATE238446T1 (en) METHOD AND DEVICE FOR PULP TREATMENT
JPS578252A (en) Production of collagen fiber molding
SU1715840A1 (en) Method of making raw-hide
DE59711728D1 (en) METHOD FOR PRODUCING PARTICULATE WASHING OR CLEANING AGENTS
RU92008487A (en) METHOD OF OBTAINING A POLYFUNCTIONAL COLLAGEN PREPARATION
RU2157409C1 (en) Offal treatment process
WO1990012118A1 (en) Enzymatic method for unhairing of hides or skins
JPS5544315A (en) Simple conversion and treating method of living discharge water to intermediate water
RU2061724C1 (en) Method for preparation of collagen-containing raw materials for production of gelatin
RU2068866C1 (en) Method of preparing collagen-containing raw for gelatin producing
RU2174151C1 (en) Rawstock liming-depilation process
JP2002143862A (en) Method for treating waste water containing protein
FI62557C (en) FOERFARANDE FOER MINSKNING AV SVAVELVAETEGASUTVECKLINGEN VID FOERAEDLING AV SKINN SAMT VID FOERFARANDET ANVAENDA AVKALKNINGS- BETNINGS- OCH SURA BEHANDLINGSMEDEL
RU2156304C1 (en) Method of treatment of depilated hide
JPH0333195B2 (en)