WO2007138478A2 - Leder, dessen oberfläche ein nubukähnliches aussehen aufweist - Google Patents
Leder, dessen oberfläche ein nubukähnliches aussehen aufweist Download PDFInfo
- Publication number
- WO2007138478A2 WO2007138478A2 PCT/IB2007/001849 IB2007001849W WO2007138478A2 WO 2007138478 A2 WO2007138478 A2 WO 2007138478A2 IB 2007001849 W IB2007001849 W IB 2007001849W WO 2007138478 A2 WO2007138478 A2 WO 2007138478A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic layer
- leather
- leather according
- hollow microspheres
- plastic
- Prior art date
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
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
- C14C11/006—Surface finishing of leather using macromolecular compounds using polymeric products of isocyanates (or isothiocyanates) with compounds having active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
Definitions
- the starting point here is preferably a full-grain leather, in particular a cowhide, which can be tanned as chrome or chrome-free leather and its grain side is finely ground by a sandpaper with a grain size greater than 280, preferably greater than 350, so that no trained tufts present are.
- the organic polymers preferably consist predominantly of elastically crosslinked polyurethanes, preferably polycarbonate-based.
- the organic polymers can also consist of soft polyurethane mixtures and contain polyacrylate, and are formed from aqueous dispersions.
- inorganic polymers is understood to mean everything that is formed from silicone dispersions and is firmly anchored in the plastic layer and does not emigrate.
- Optimum properties result when the plastic layer contains at least 80% by weight to at most 95% by weight of organic plastic and at least 5% by weight to at most 20% by weight of inorganic plastic.
- Copolymer and inside it is a gas, preferably isobutane.
- the appearance and the velvety feel of the leather according to the invention can be improved in that it is subjected to a MiII- or Tampelvorgang.
- the surface of the plastic layer undergoes a structural enlargement and also some silicone particles and hollow microspheres are exposed on the surface of the plastic layer.
- the plastic layer 2 contains hollow microspheres 3, which are partially embedded in the plastic layer 2, and are partially surrounded by a sheath 4 of the material of the plastic layer 2, so that there arise elevations in the surface of the plastic layer 2, which cause the nubuck effect.
- the sheath 4 is so thin that it is transparent in the color that has the plastic layer 2 by their pigmentation.
- the hollow microspheres 3 are partially close to each other in close proximity, but at certain points between the hollow microspheres 3 spaces are kept free, which have continuous capillaries, through which the air and water vapor permeability is ensured. In this area, the plastic layer 2 is thinner than in the area of the elevations and is partially penetrated by fine leather fibers.
- the embedded in the material of the plastic layer 2 silicone rubber particles are permanently hydrophobic and dirt-repellent and affect the
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07734934A EP2027222A2 (de) | 2006-05-30 | 2007-05-08 | Leder, dessen oberfläche ein nubukähnliches aussehen aufweist |
BRPI0712808-8A BRPI0712808A2 (pt) | 2006-05-30 | 2007-05-08 | couro |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202006008568.8 | 2006-05-30 | ||
DE200620008568 DE202006008568U1 (de) | 2006-05-30 | 2006-05-30 | Leder |
AT0042806U AT9587U1 (de) | 2006-05-30 | 2006-05-30 | Leder, auf dessen oberfläche eine kunststoffschicht vorgesehen ist, die ein nubukähnliches aussehen besitzt, sowie ein verfahren zur herstellung desselben |
ATGM428/2006 | 2006-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007138478A2 true WO2007138478A2 (de) | 2007-12-06 |
WO2007138478A3 WO2007138478A3 (de) | 2008-03-06 |
Family
ID=38740179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2007/001849 WO2007138478A2 (de) | 2006-05-30 | 2007-05-08 | Leder, dessen oberfläche ein nubukähnliches aussehen aufweist |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2027222A2 (de) |
BR (1) | BRPI0712808A2 (de) |
WO (1) | WO2007138478A2 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6177198B1 (en) * | 1998-07-07 | 2001-01-23 | Philipp Schaefer | Leather with a finish on the buffed surface, and process for producing a leather of this type |
DE10217056A1 (de) * | 2002-04-15 | 2003-11-13 | Philipp Schaefer | Vollnarbiges Walknappaleder und Verfahren zur Herstellung desselben |
DE10218076A1 (de) * | 2002-04-23 | 2003-11-20 | Philipp Schaefer | Leder und Verfahren zur Herstellung desselben |
-
2007
- 2007-05-08 EP EP07734934A patent/EP2027222A2/de not_active Withdrawn
- 2007-05-08 WO PCT/IB2007/001849 patent/WO2007138478A2/de active Application Filing
- 2007-05-08 BR BRPI0712808-8A patent/BRPI0712808A2/pt not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6177198B1 (en) * | 1998-07-07 | 2001-01-23 | Philipp Schaefer | Leather with a finish on the buffed surface, and process for producing a leather of this type |
DE10217056A1 (de) * | 2002-04-15 | 2003-11-13 | Philipp Schaefer | Vollnarbiges Walknappaleder und Verfahren zur Herstellung desselben |
DE10218076A1 (de) * | 2002-04-23 | 2003-11-20 | Philipp Schaefer | Leder und Verfahren zur Herstellung desselben |
Also Published As
Publication number | Publication date |
---|---|
WO2007138478A3 (de) | 2008-03-06 |
EP2027222A2 (de) | 2009-02-25 |
BRPI0712808A2 (pt) | 2012-10-23 |
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