FR2153667A6 - Synthetic micro porous products - from collagen extracted with nitric acid and then precipitated - Google Patents

Synthetic micro porous products - from collagen extracted with nitric acid and then precipitated

Info

Publication number
FR2153667A6
FR2153667A6 FR7133740A FR7133740A FR2153667A6 FR 2153667 A6 FR2153667 A6 FR 2153667A6 FR 7133740 A FR7133740 A FR 7133740A FR 7133740 A FR7133740 A FR 7133740A FR 2153667 A6 FR2153667 A6 FR 2153667A6
Authority
FR
France
Prior art keywords
nitric acid
precipitated
collagen
micro porous
prods
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
Application number
FR7133740A
Other languages
French (fr)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7133740A priority Critical patent/FR2153667A6/en
Application granted granted Critical
Publication of FR2153667A6 publication Critical patent/FR2153667A6/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • 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
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0545—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition
    • C08J2201/0547—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition the non-solvent being aqueous

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Dermatology (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Peptides Or Proteins (AREA)

Abstract

Aq. acid solns. of collagen prods. of mol.wt. 50,000-150,000 are prepd. by treating collagen, its fibres, gelatin or chromium shavings with a nitric acid soln. of >10% conc. at 0-60 degrees C. The collagens are precipd. on a support as microporous prods. by pH modification. A polymer such as polyamides, polyesters, may be co-prepd. with the collagen. The prods. have improved mechanical properties, microporosity, touch and thermal insulation.
FR7133740A 1971-09-20 1971-09-20 Synthetic micro porous products - from collagen extracted with nitric acid and then precipitated Expired FR2153667A6 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7133740A FR2153667A6 (en) 1971-09-20 1971-09-20 Synthetic micro porous products - from collagen extracted with nitric acid and then precipitated

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7133740A FR2153667A6 (en) 1971-09-20 1971-09-20 Synthetic micro porous products - from collagen extracted with nitric acid and then precipitated

Publications (1)

Publication Number Publication Date
FR2153667A6 true FR2153667A6 (en) 1973-05-04

Family

ID=9083190

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7133740A Expired FR2153667A6 (en) 1971-09-20 1971-09-20 Synthetic micro porous products - from collagen extracted with nitric acid and then precipitated

Country Status (1)

Country Link
FR (1) FR2153667A6 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4958008A (en) * 1987-07-08 1990-09-18 Herve Petite Process for crosslinking of collagen by introduction of azide groups as well as tissues and biomaterials obtained by use of the process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4958008A (en) * 1987-07-08 1990-09-18 Herve Petite Process for crosslinking of collagen by introduction of azide groups as well as tissues and biomaterials obtained by use of the process

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