A kind of polyurethane silicone modified water-based alkyd resin and its preparation method and application

A water-based alkyd resin and alkyd resin technology, used in polyester coatings, coatings, etc., can solve the problems of poor compatibility between silicone and alkyd resin, poor storage stability, slow drying of paint films, etc. The effect of improving mechanical properties, good storage stability and improving dryness
CN105218801BInactive Publication Date: 2017-04-05SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2017-04-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of chemical engineering, and discloses polyurethane-organosilicon modified waterborne alkyd resin and a preparation method and an application thereof. The polyurethane-organosilicon modified waterborne alkyd resin is composed of the following components, by weight: 26-36 parts of vegetable oil, 8-15 parts of polyol, 12-18 parts of polyacid, 0.03-0.05 parts of an alcoholysis catalyst, 25-32 parts of diisocyanate, 0.03-0.09 parts of dibutyltin dilaurate, 1-12 parts of hydroxyl silicone oil, 1-4 parts of 1,4-butanediol, 3-7 parts of 2,2-dimethylol propionic acid, 2-6 parts of a neutralizing agent, and 1.2-1.9 parts of a small-molecular chain extender. The resin provided by the invention is used for preparing a paint film. The prepared paint film has the advantages of easy construction, high gloss, full paint film, good thermal stability, water resistance, low surface energy, and good mechanical performance.
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Description

technical field

[0001] The invention belongs to the technical field of chemical industry, and relates to a polyurethane-organosilicon modified water-based alkyd resin, a preparation method and an application. Background technique

[0002] Alkyd resin is a synthetic resin widely used in the coating industry, and it is also one of the largest synthetic resins in my country. It has the advantages of cheap price, simple synthesis process, rich source of raw materials, simple construction, good miscibility, good wettability and dispersibility to pigments and fillers, and is widely used in wood varnishes, anti-corrosion primers, metal baking varnishes, etc. However, the alkyd resin molecular structure contains more hydroxyl groups and ester groups, so that its paint film performance has some shortcomings: slow drying of the paint film, low hardness, poor water resistance, poor weather resistance, etc.; for water-based alkyd resins, There is also the disadvantage of poor storage s...

Claims

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