Title:
METHOD FOR MANUFACTURING SYNTHETIC LEATHER
Document Type and Number:
WIPO Patent Application WO/2019/054104
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a synthetic leather characterized in that a liquid obtained by adding a thickener (B) containing 2 x 10 – 2 mol/g or less of an oxyethylene group to an aqueous urethane resin composition including an aqueous urethane resin (A) having an acid value of 0.01 mgKOH/g or greater in a range of 0.01-30 parts by mass per 100 parts by mass of the aqueous urethane resin (A), and thereafter the thickened liquid is coated to a base material and coagulated with a coagulant (C) including a metal salt (c-1). It is preferable that one or more kinds of thickener be used, as the thickener, that is selected from the group consisting of a cellulose thickener, an acrylic thickener, and a urethane thickener. Furthermore, calcium nitrate is preferable as the metal salt (c-1).
More Like This:
Inventors:
FUJISHITA NORIE (JP)
Application Number:
PCT/JP2018/029885
Publication Date:
March 21, 2019
Filing Date:
August 09, 2018
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
D06N3/14
Domestic Patent References:
| WO2017013926A1 | 2017-01-26 |
Foreign References:
| JP2017025423A | 2017-02-02 | |||
| JP2017105917A | 2017-06-15 | |||
| JP2016084463A | 2016-05-19 | |||
| JP2006511727A | 2006-04-06 | |||
| JPS4743176B1 | 1972-10-31 | |||
| JP2000160484A | 2000-06-13 | |||
| JP2002249985A | 2002-09-06 | |||
| JP2013083031A | 2013-05-09 | |||
| JP2005273083A | 2005-10-06 | |||
| JP2006511727A | 2006-04-06 | |||
| JP2006524754A | 2006-11-02 | |||
| JP2009527658A | 2009-07-30 |
Other References:
See also references of EP 3677722A4
Attorney, Agent or Firm:
OGAWA Shinji (JP)
Download PDF:
Previous Patent: APPLICATION JIG AND METHOD FOR MANUFACTURING ROTOR BLADES
Next Patent: METHOD FOR MANUFACTURING GLOVES
Next Patent: METHOD FOR MANUFACTURING GLOVES