Preparation method of universal type color paste grinding resin

A kind of grinding resin, general-purpose technology, applied in the direction of pigment slurry, etc., can solve the problems of anti-coarseness, anti-sticking, swelling, etc., and achieve the effect of strong wrapping ability, obvious effect, and strong electrostatic fixing ability

Active Publication Date: 2014-12-17
HAOLISEN COATING SHANGHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing grinding resins are prone to disadvantages such as anti-coarseness, sedimentation, swelling, and anti-sticking after being ground into color paste. Some grinding resins suitable for black pulp have various disadvantages when they are applied to mortar, and Some materials suitable for mortar are prone to disadvantages such as anti-coarseness when used in black slurry. Therefore, the universal dispersing grinding resin with a wide range of applications has become a product that major electrophoresis manufacturers are vying to develop.

Method used

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  • Preparation method of universal type color paste grinding resin
  • Preparation method of universal type color paste grinding resin
  • Preparation method of universal type color paste grinding resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of epoxy resin after bisphenol A chain extension

[0042] The specific formula is as follows:

[0043] Substance name

[0044] In a four-necked flask equipped with a thermometer, a stirring paddle, and a condenser tube, add 128 epoxy resin (manufactured by Nanya Company, epoxy equivalent 186) and then add bisphenol A and m-xylene solvent. Add triphenylphosphine as a catalyst, raise the temperature to 125°C, keep the temperature for 1.5 hours, then cool down and discharge the material to obtain an epoxy resin with an epoxy equivalent of about 500, and put it in a clean and sealed container for later use.

Embodiment 2

[0046] The specific formula is as follows:

[0047] Substance name

[0048] Preparation of semi-blocked isocyanates using organic compounds containing active hydrogen as blocking agents. Add toluene diisocyanate and methyl isobutyl ketone into a four-necked flask equipped with a thermometer, a stirring paddle, and a condenser. After the temperature is raised to 50°C, diethylene glycol monobutyl ether is added dropwise. About two hours after the completion of the dropwise addition, the insulation was continued for two hours to obtain a semi-blocked isocyanate. Store in a dry airtight container for later use.

Embodiment 3

[0050] The specific formula is as follows:

[0051] Substance name

[0052] Embodiment 2 semi-blocked isocyanates

[0053] Comb-like molecules are prepared. In a four-neck flask equipped with a thermometer, a stirring paddle, and a condenser, add the resin of Example 1 and methyl isobutyl ketone, and after heating up to 130°C, add the semi-blocked isocyanate of Example 2 dropwise. After about one hour of dropwise addition, continue to incubate for one hour to obtain a comb-like molecular resin. Store in a clean, airtight container for later use.

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Abstract

The invention relates to universal type grinding resin and in particular relates to a preparation method of universal type color paste grinding resin. The preparation method is characterized in that the universal type color paste grinding resin is dispersing type grinding resin containing a quaternary ammonium salt structure. The preparation method comprises the following steps of: a. preparation of linear epoxy resin; b. preparation of semi-closed isocyanate; c. preparation of comb structure resin; d. introduction of tallowalkyl-dipropylene triamines compounds; and e. weak acid neutralization. Due to the introduction of a derived structure after the reaction of tallowalkyl-dipropylene triamines, the universal type color paste grinding resin has good dispersing and grinding effects, the prepared water-based color paste has good storage capacity and excellent covering power, and a dendritic system is derived, so that the physical wrapping capability of the system is strong; the quaternary ammonium salt resin containing a special structure is prepared after organic weak acid is added for neutralization, and various universal color paste can be prepared and has universality.

Description

[technical field] [0001] The invention relates to a general-purpose grinding resin, in particular to a preparation method of a general-purpose color paste grinding resin. [Background technique] [0002] Since the 1970s, cathodic electrophoretic coatings have been applied industrially and developed rapidly because of their excellent corrosion resistance, excellent mechanical properties and high automation in coating applications. Make it more and more widely used in industry. However, the water-based color paste for cathodic electrophoretic coating, due to the complexity of its components and the strict requirements for on-site control, makes different color pastes have extremely high requirements for the dispersion resin used for grinding during preparation, which greatly The scope of use of ground dispersion resins for electrophoretic coating is limited. With the rapid development of the industrialization era, the requirements for universal dispersing and grinding resins ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/58C08G18/83C08G18/80C09D17/00
Inventor 周贤柳昀刘薇薇张春香胡浩东林海莲李晶苏献兰
Owner HAOLISEN COATING SHANGHAI
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