Nonionic neutralizer and preparation method thereof, waterborne polyurethane and preparation method and application thereof
A water-based polyurethane, non-ionic technology, applied in the fields of application, textiles, papermaking, clothing, etc., can solve the problems of poor hand feeling of finished leather and unstable performance of water-based polyurethane emulsion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0036] The second aspect of the present invention discloses a kind of preparation method of non-ionic neutralizing agent, comprises the following steps:
[0037] Prepared by stirring 5-8 parts of N,N-dimethylethanolamine, 9-14 parts of diisocyanate and 50-200 parts of polyethylene glycol monomethyl ether in a protective atmosphere at 70-90°C for 2-4 hours according to parts by mass , wherein the protective atmosphere is an inert gas or nitrogen. It is prepared from 5-8 parts of N,N-dimethylethanolamine, 9-14 parts of diisocyanate and 50-200 parts of polyethylene glycol monomethyl ether according to the parts by mass. Since the non-ionic neutralizer contains the structure of EO chain forging, a thick layer of non-ionic hydrophilic layer can be formed on the surface of water-based polyurethane latex particles in the process of synthesizing water-based polyurethane, so that the additives added to water-based polyurethane can be effectively reduced. The pH value is not sensitive,...
Embodiment 1
[0059] Preparation of non-ionic neutralizer: Weigh 5 parts of N,N-dimethylethanolamine, 9 parts of 1,6-hexamethylene diisocyanate and 50 parts of polyethylene glycol monomethyl ether (molecular weight: 1000) in parts by mass, Add it into a flask; under the protection of an inert gas, raise the temperature to 70°C and stir for 4 hours to prepare a non-ionic neutralizer with a terminal tertiary amine group.
[0060] Preparation of water-based polyurethane: Weigh 40 parts of toluene diisocyanate, 120 parts of 3MCPG (Mn=1400), 3 parts of ethylene glycol, 0.1 part of trimethylol propane, 5 parts of dimethylol propionic acid and BICAT8106 catalyst in parts by mass Add 0.02 parts into the flask, heat up to 60°C and stir for 3 hours under the protection of inert gas, then cool down to 40°C, 50 parts of non-ionic neutralizer, stir for 3 minutes to carry out neutralization reaction; add 500 Part deionized water was dispersed for 30 minutes to obtain milky white and bluish water-based po...
Embodiment 2
[0063] Preparation of non-ionic neutralizer: Weigh 8 parts of N,N-dimethylethanolamine, 14 parts of isophorone diisocyanate and 160 parts of polyethylene glycol monomethyl ether (molecular weight: 2000) in parts by mass, add In a flask; under the protection of an inert gas, the temperature was raised to 80°C and the reaction was stirred for 3 hours to obtain a non-ionic neutralizer with a terminal tertiary amine group.
[0064] Preparation of water-based polyurethane: Weigh 60 parts of 4,4'-dicyclohexylmethane diisocyanate, 130 parts of 3MCPG (Mn=2000), 4 parts of 1,3-propanediol, 0.2 parts of trimethylolpropane, 2 Add 6 parts of hydroxymethylbutyric acid and 0.08 parts of BICAT8108 catalyst into the flask, raise the temperature to 70°C under the protection of inert gas and stir for 6 hours, then cool down to 45°C, add 100 parts of non-ionic neutralizer, and stir for 6 minutes Perform neutralization reaction; add 700 parts of deionized water to disperse for 40 minutes under hi...
PUM
| Property | Measurement | Unit |
|---|---|---|
| peel strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More