Polyurethane primer and preparation method thereof

A polyurethane primer and polyurethane technology, applied in the field of paint, can solve the problems of easy prickly heat bubbles, poor coating construction performance, slow drying speed, etc., and achieve good anti prickly heat bubble performance, good low temperature drying, good flexibility. Effect

Active Publication Date: 2014-07-23
珠海展辰新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned polyurethane primer for wood coating has the disadvantage of slow drying under low temperature conditions, so it needs to be placed for a long time to polish
Moreover, the construction performance of the coating film formed by the polyurethane primer is poor, and it has the disadvantages of easy blistering at high temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0068] The polyurethane primer provided by the present invention uses the above components as raw materials respectively, and its preparation method can adopt the preparation method of two-component paint well known to those skilled in the art. Correspondingly, the present invention also provides a kind of preparation method of polyurethane primer, comprises the following steps:

[0069] Mix rice bran oil-type alkyd resin, zinc stearate, talcum powder, first solvent, anti-settling agent, defoamer, leveling agent and drier, and disperse evenly to form component A; toluene diisocyanate three Mix polymer, toluene diisocyanate curing agent and polyurethane grade solvent to get component B; mix component A and component B to get polyurethane primer.

[0070] The rice bran oil type alkyd resin, zinc stearate, talcum powder, first solvent, anti-settling agent, defoamer, leveling agent, drier, toluene diisocyanate trimer, toluene diisocyanate curing agent and The weight ratio of poly...

Embodiment 1

[0074] Component A formula:

[0075] 65 grams of rice bran oil-type alkyd resin;

[0076] 5 grams of zinc stearate of the model BT1817 produced by the Bailihe Group;

[0077] 10 grams of talc powder of TP-1250 produced by Guangxi Guilin Guihua Superfine Powder Material Co., Ltd.;

[0078] 13 grams of xylene produced by Maoming Petrochemical;

[0079] 5 grams of butyl acetate produced by Maoming Petrochemical;

[0080] Anti-sedimentation agent SD-1 bentonite 0.5 g;

[0081] 0.5 grams of BYK141 foam-breaking polysiloxane compound of defoamer Germany BYK company;

[0082] 0.3 grams of BYK358 polyacrylate leveling agent from BYK Company in Germany;

[0083] T12 organotin drier 0.3g.

[0084] making process:

[0085] Add alkyd resin, xylene and butyl acetate into the reaction kettle in turn, and then add defoamer and leveling agent in order to disperse at medium speed evenly and thickly, add talcum powder, zinc stearate and anti-sedimentation agent after dispersing at medium...

Embodiment 2

[0093] Component A formula:

[0094] 60 grams of rice bran oil-type alkyd resin;

[0095] 5 grams of zinc stearate of the model BT1817 produced by the Bailihe Group;

[0096] 15 grams of talc powder of TP-1250 produced by Guangxi Guilin Guihua Superfine Powder Material Co., Ltd.;

[0097] 13 grams of xylene produced by Maoming Petrochemical;

[0098] 5 grams of butyl acetate produced by Maoming Petrochemical;

[0099] Anti-sedimentation agent SD-1 bentonite 0.5 g;

[0100] 0.5 grams of BYK141 foam-breaking polysiloxane compound of defoamer Germany BYK company;

[0101] 0.3 grams of BYK358 polyacrylate leveling agent from BYK Company in Germany;

[0102] The model ZH300 organic amine drier produced by Taizhou Jianye Chemical Co., Ltd. was 0.3 grams.

[0103] making process:

[0104] Add alkyd resin, xylene and butyl acetate into the reaction kettle in turn, and then add defoamer and leveling agent in order to disperse at medium speed evenly and thickly, add talcum powder...

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Abstract

The invention discloses polyurethane primer, which consists of a component A and a component B, wherein the component A comprises rice bran oil type alkyd resin, zinc stearate, talcum powder, a first solvent, an anti-settle agent, an antifoaming agent, a flatting agent and a drier, and the component B comprises a toluene diisocyanate tripolymer, a toluene diisocyanate curing agent and a polyurethane-grade solvent. The bi-component polyurethane primer uses the rice bran oil type alkyd resin as a main component of the component A, due to the fact that rice bran oil resin has good solvent releasing performance, the blistering-preventing performance of the polyurethane primer is good. In addition, due to the fact that the contents of the toluene diisocyanate tripolymer and the toluene diisocyanate curing agent are high, the polyurethane primer has good low-temperature drying performance. Simultaneously, due to the fact that the rice bran oil type alkyd resin has good flexibility, when the rice bran oil type alkyd resin is used by being matched with the toluene diisocyanate tripolymer and the toluene diisocyanate curing agent, a phenomenon that paint films crack is avoided.

Description

technical field [0001] The invention relates to the technical field of paints, in particular to a polyurethane primer and a preparation method thereof. Background technique [0002] Paint is an indispensable decorative material in modern life. The application of paint gives people a sense of beauty, touch, and even colorful color vision, and gives the painted object beauty, decoration and protection. Paint is a kind of paint, which forms a paint film after being applied to the surface of an object, making the object beautiful and protected, or forming a film substance with other special functions on the surface of the object. In recent years, polyurethane primers used on equipment such as solid wood panels, wood grain panels, and bakelite panels have been widely developed. They have strong adhesion, good antirust and anticorrosion properties, and have been widely favored by people. [0003] At present, the polyurethane primer used for wood coating on the market is usually a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D7/12
Inventor 陈寿生
Owner 珠海展辰新材料股份有限公司
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