Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyurethane curing agent and preparation process thereof

A technology of polyurethane curing agent and water agent, applied in the field of polyurethane curing agent and its preparation technology, can solve problems such as poor temperature resistance and overall quality reduction, and achieve the effects of improved stability, extended storage period and good curing activity

Inactive Publication Date: 2019-06-21
SHANGHAI INABATA FINE CHEM CO LTD
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem in the prior art that the overall quality of the polyurethane curing agent is greatly reduced due to the poor temperature resistance of the polyurethane curing agent, the first object of the present invention is to provide a polyurethane curing agent, by adding phosphite and methyl borate, and making They play a good compound and synergistic effect with each other to solve the above technical problems. They have good temperature resistance and high overall quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyurethane curing agent and preparation process thereof
  • Polyurethane curing agent and preparation process thereof
  • Polyurethane curing agent and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: A polyurethane curing agent, each component and its corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0044] Step 1, emptying, filling the airtight stirred tank with nitrogen, and measuring the oxygen content at the bottom of the stirred tank with an oxygen meter, and the measured oxygen content is 0.93%;

[0045] Step 2, mixing materials, pass the corresponding parts by weight of DESMODUR N 3300, phosphite, ethyl acetate, dibutyltin dilaurate, biuret, methyl borate, tributyl phosphite and triethyl orthoformate The magnetic pump is transported to the stirred tank, and nitrogen is used for protection during the transport process, and then stirred and mixed evenly, the stirring speed is 600-800 rpm, and the time is 30 minutes to obtain the sample material;

[0046] Step 3: Sampling and filtering, testing the obtained sample materials, and passing the qualified sample materials through a filter for impurity re...

Embodiment 2-8

[0048] Example 2-8: A polyurethane curing agent, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0049] Each component and parts by weight thereof in table 1 embodiment 1-8

[0050]

[0051]

Embodiment 9

[0052] Embodiment 9: a polyurethane curing agent, the difference from Example 1 is that step 2 is specifically set as, mixing, the corresponding parts by weight are 50 parts of DESMODUR N 3300, 12 parts of phosphite, 20 parts Parts of ethyl acetate, 3 parts of dibutyltin dilaurate, 0.8 parts of biuret, 1.5 parts of methyl borate, 1.2 parts of zinc dialkyldithiocarbamate and 0.3 parts of triethyl orthoformate It was transported to a stirring tank by a magnetic pump, and nitrogen was used for protection during the transport process, and then stirred and mixed uniformly at a stirring speed of 600-800 rpm for 30 minutes to obtain a sample material.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a polyurethane curing agent and a preparation process thereof, relates to the technical field of production and processing of polyurethane curing agents and solves the problemthat overall quality of the polyurethane curing agent is reduced greatly due to poor temperature resistance. The polyurethane curing agent is prepared from components in parts by weight as follows: 50-70 parts of DESMODUR N 3300, 9-12 parts of phosphite, 20-36 parts of ethyl acetate, 1-3 parts of dibutyltin dilaurate, 0.8-1.6 parts of biuret, 0.6-1.2 parts of an antioxidant, 0.3-0.9 parts of a moisture scavenger and 1.5-2.5 parts of methyl borate. The polyurethane curing agent has good temperature resistance, good and stable overall viscosity and higher quality, and free HDI content of the polyurethane curing agent meets the standard and is lower.

Description

technical field [0001] The invention relates to the technical field of polyurethane curing agent production and processing, more specifically, it relates to a polyurethane curing agent and its preparation process. Background technique [0002] Polyurethane curing agent refers to the component containing polyisocyanate group in two-component polyurethane paint. It is a synthetic material widely used in coatings, adhesives and other fields. [0003] A polyurethane curing agent and its preparation method are disclosed in the Chinese invention patent whose publication number is CN103073699A, and a polyurethane curing agent is obtained by the following method: hydrogenated xylylene diisocyanate and polyol in esters Carry out addition reaction in solvent A, then add alkanes extractant to carry out heating and extraction to purify polyisocyanate prepolymer solid, and finally dissolve in ester solvent B to form a solution with a solid content of 65% to 85%, which is the Described p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G18/79C08G18/73C08G18/24C08G18/67C08K5/55C08K5/524
Inventor 朱卫红刘红艳陆彩峰
Owner SHANGHAI INABATA FINE CHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com