Title:
SHEET POROUS COLLAGEN-CONTAINING MATERIAL AND METHOD FOR THE PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/121251
Kind Code:
A1
Abstract:
The invention relates to polymer engineering, in particular to producing a sheet porous collagen-containing material which can be used for producing shoes, furniture and transport, mainly for producing elastic cushion pads. The aim of said invention is to improve the cushioning capacity of a sheet porous collagen-containing material and to simplify the production process thereof. The inventive sheet porous collagen-containing material comprises a water-soluble plasticiser and hydrophilic filler particles in the form of fibres whose length/diameter ratio ranges from 5 to 500. At least 50 % of fibres are arranged in a parallel direction with respect to the sheet sides having largest areas and whose relative tensile elongation in one direction on the plane of largest sides ranges from 10 to 30 %, the elasticity modulus with thickness compression ranges from 50 to 300 KPa, the thickness recovery coefficient after a pressure of 70 % during 5 hours is of 0.90-0.95 at the sheet humidity of 8-12 %. The inventive method for producing said sheet porous collagen-containing material consists in mixing collagen hydrophilic fibres whose length-diameter ratio ranges from 5 to 500 with an aqueous solution and in adding a polyfunctional mixing agent in such a way that a smooth paste comprising 1-20 % of fibres, 1-5 % of collagen and 0.2-20 % of crosslinking agent is obtained, in shaping said smooth past in the form of a liquid sheet whose fibres are oriented in a parallel direction with respect to largest sides thereof, in freezing and unfreezing said liquid sheet, in consequently pressing the thus obtained porous sheet, in plastifying by means of a water-soluble plasticiser, in carrying out a second pressing and in drying.
Inventors:
VAINERMAN EFIM SEMENOVICH (RU)
Application Number:
PCT/RU2004/000432
Publication Date:
December 22, 2005
Filing Date:
November 02, 2004
Export Citation:
Assignee:
OSTASHKOVSKY KOZHEVENNY ZD AOZ (RU)
VAINERMAN EFIM S (RU)
VAINERMAN EFIM S (RU)
International Classes:
C08L89/04; C08H1/06; C08L89/06; C14C13/00; (IPC1-7): C08L89/04
Foreign References:
| RU2018540C1 | 1994-08-30 | |||
| JPH04239574A | 1992-08-27 | |||
| JPH07275341A | 1995-10-24 | |||
| RU2070560C1 | 1996-12-20 | |||
| RU2116801C1 | 1998-08-10 | |||
| EP0856260A1 | 1998-08-05 |
Attorney, Agent or Firm:
Meluzova, Vera Mikhailovna (11-191 Moscow, 1, RU)
Download PDF: