Title:
AQUEOUS POLYURETHANE EMULSION FOR ULTRA-THIN POLYURETHANE CONDOM WITH LOW MODULUS AND HIGH STRENGTH, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/121323
Kind Code:
A1
Abstract:
Disclosed are an aqueous polyurethane emulsion for an ultra-thin polyurethane condom with low modulus and high strength, and a preparation method therefor, wherein the aqueous polyurethane emulsion comprises: 15-18 parts by mass of a macromolecular diol, 4-6 parts by mass of a diisocyanate, 0.6-0.9 parts by mass of a hydrophilic chain extender, 0.4-0.8 parts by mass of a micromolecule chain extender, etc. The prepared aqueous polyurethane emulsion has characteristics such as a low modulus, a high strength and a high resilience.
Inventors:
LI WEIHU (CN)
GUO WENHE (CN)
ZHU BAOLING (CN)
WANG FEI (CN)
DAI JIABING (CN)
GUO WENHE (CN)
ZHU BAOLING (CN)
WANG FEI (CN)
DAI JIABING (CN)
Application Number:
PCT/CN2020/137262
Publication Date:
June 24, 2021
Filing Date:
December 17, 2020
Export Citation:
Assignee:
HEFEI KETIAN WATERBORNE TECH CO LTD (CN)
LANZHOU KETIAN WATERBORNE POLYMER MAT CO LTD (CN)
LANZHOU KETIAN WATERBORNE POLYMER MAT CO LTD (CN)
International Classes:
C08G18/12; A61F6/04; C08G18/48
Foreign References:
| CN111138614A | 2020-05-12 | |||
| CN107266645A | 2017-10-20 | |||
| CN107236110A | 2017-10-10 | |||
| CN102358777A | 2012-02-22 | |||
| JP2013176257A | 2013-09-05 | |||
| EP3545040A1 | 2019-10-02 | |||
| CN103640133A | 2014-03-19 |
Other References:
See also references of EP 4079778A4
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
Download PDF: