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Polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink

A technology of polyisocyanate and isocyanate, which is applied in the direction of ink, household utensils, applications, etc., can solve the problems of high resistivity and large thickness of conductive coating

Inactive Publication Date: 2021-09-28
SUZHOU HI TECH ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a kind of polyisocyanate prepolymer, rosin modified epoxy resin and Conductive ink

Method used

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  • Polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink
  • Polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink
  • Polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The preparation of embodiment 1 polyisocyanate prepolymer

Embodiment 1-1

[0051] Add 4 kg of polyoxypropylene diol 2000 and 1 kg of polyoxypropylene triol 1000 to a four-necked flask equipped with a stirrer, a thermometer, and a nitrogen protection device after removing water, and add 5.5 kg of isophorone diisocyanate and Diphenylmethane-4,4'-diisocyanate (mass ratio 1:1), mixed evenly, heated to 80°C, reacted under nitrogen atmosphere for 3 hours, cooled to room temperature, and obtained polyisocyanate prepolymer.

Embodiment 1-2

[0053] The mass ratio of isophorone diisocyanate and diphenylmethane-4,4'-diisocyanate was replaced from 1:1 to 3:1, and the rest was the same as in Example 1 to prepare a polyisocyanate prepolymer.

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Abstract

The invention discloses a polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink. The invention discloses a polyisocyanate prepolymer, which is prepared by the following method: carrying out polymerization reaction on polyether polyol and isocyanate to obtain the polyisocyanate prepolymer, wherein the polyether polyol is a combination of polypropylene oxide glycol and polypropylene oxide triol, the mass ratio of the two is (2: 1)-(5: 1), the isocyanate is a combination of isocyanate A and isocyanate B, and the isocyanate A is isophorone diisocyanate, the isocyanate B is diphenylmethane-4, 4 '-diisocyanate or or toluene diisocyanate, and the mass ratio of the two is (1: 1)-(3: 1). According to the invention, the epoxy resin is modified by adopting the specific polyisocyanate prepolymer and rosin to obtain the rosin modified epoxy resin, and the rosin modified epoxy resin is used in the conductive ink to prepare an ultrathin and low-resistance conductive coating.

Description

technical field [0001] The invention relates to a polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink. Background technique [0002] Conductive ink (mainly refers to mixed conductive composite ink) conducts current by means of conductive materials dispersed in the ink carrier. Common conductive inks are composed of nickel powder, epoxy resin, curing agent and additives. However, the wettability of epoxy resin to conductive nickel powder is not good, which leads to the thick conductive coating made by conductive ink on the market and high resistivity. Therefore, this problem needs to be solved urgently. Contents of the invention [0003] The technical problem to be solved in the present invention is to provide a kind of polyisocyanate prepolymer, rosin modified epoxy resin and conductive ink. The invention adopts specific polyisocyanate prepolymer and rosin to modify epoxy resin to obtain rosin modified epoxy resin, which can be used in conductive i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08G18/10C08G18/58C09D11/102C09D11/52
CPCC08G18/4812C08G18/10C09D11/102C09D11/52C08G18/58
Inventor 汪义方
Owner SUZHOU HI TECH ELECTRONICS CO LTD
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