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Soap-free self-crosslinking nano acrylic emulsion as well as preparation method and application thereof

An acrylic emulsion and self-crosslinking technology, applied in the direction of coating, can solve the problem of not increasing the hardness of the coating film, and achieve the effect of reducing the film forming temperature, fast film forming speed, and bright appearance.

Pending Publication Date: 2020-09-15
恒昌涂料(惠阳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Invention CN110028617A discloses a soap-free self-crosslinking nano-acrylic emulsion. The soap-free self-crosslinking nano-acrylic emulsion is synthesized by introducing self-crosslinking monomers and self-made macromolecular stabilizers, which can form a dense protective film and has stain resistance. , wear resistance, good water resistance, etc., but the hardness of the coating film has not improved

Method used

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  • Soap-free self-crosslinking nano acrylic emulsion as well as preparation method and application thereof
  • Soap-free self-crosslinking nano acrylic emulsion as well as preparation method and application thereof
  • Soap-free self-crosslinking nano acrylic emulsion as well as preparation method and application thereof

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with examples, which are only preferred implementations of the present invention, and are not limitations of the present invention.

[0021] The following table is the formula table (unit: %) of 3 examples and 2 comparative examples of soap-free self-crosslinking nanoacrylic emulsion of the present invention.

[0022]

[0023] Wherein, the cross-linking monomer is diacetone acrylamide and butyl acrylamide, and the mass ratio of the diacetone acrylamide and butyl acrylamide is 3:1; the water-based acrylic resin includes high acid value acrylic resin and Low acid value acrylic resin, the acid value of the high acid value acrylic resin is 220mgKOH / g, M w =20000, the acid value of the low acid value acrylic resin is 80mgKOH / g, M w =5500, the mass ratio of the high acid value acrylic resin to the low acid value acrylic resin is 8:2. The following table is the formula table of the water-based acrylic ...

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Abstract

The invention belongs to the technical field of water-based paint, and relates to a soap-free self-crosslinking nano acrylic emulsion, which comprises the following components: water-based acrylic resin, methyl methacrylate, styrene, butyl acrylate, 2-ethylhexyl acrylate, a crosslinking monomer, adipic dihydrazide, ammonium persulfate, tert-butyl hydroperoxide, VC, ammonia water and the balance ofwater. The cross-linking monomers are diacetone acrylamide and butyl acrylamide. The emulsion is 50-100 nm in particle size, good in wettability, good in permeability, low in minimum film forming temperature of a coating film, high in curing speed, high in gloss of the coating film and capable of being polished, and the hardness of the coating film reaches up to 3H-5H. The emulsion is low in foam, a wetting agent and a defoaming agent do not need to be added when the emulsion is applied to water-borne wood paint, and the emulsion is small in particle size, so that a paint film is good in woodcolor warming property and transparent.

Description

technical field [0001] The invention belongs to the technical field of water-based coatings, and relates to a soap-free self-crosslinking nanometer acrylic emulsion and a preparation method and application thereof. Background technique [0002] Acrylic emulsion has become the largest resin coating because of its low price, good gloss and color retention, heat aging resistance and ultraviolet aging resistance. Acrylate copolymer is an amorphous polymer, which has the problem of low hardness as a wood coating. For example, the Primal EP-6060 factory wood lacquer of Rohm and Haas is a water-based acrylic polymer, the film forming temperature Tg is 58°C, but the final film hardness is only H. Xia Yuzheng et al. studied the formation and control of styrene-acrylic acrylate copolymer emulsion in the synthesis process to solve the problem of structural gel formation and control, and used core-shell technology to solve the adhesion fastness and grinding problems of high Tg styrene-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F220/14C08F212/08C08F220/18C08F220/54C08F220/58C08F2/24C09D133/14C09D7/63
CPCC08F265/06C08F2/24C09D133/14C09D7/63C08L2205/025C08L2312/00C08K2201/014C08F220/14C08F212/08C08F220/1804C08F220/1808C08F220/54C08F220/58C08L33/14C08K5/06C08K5/098
Inventor 李成林庄国波郭燕鹏谭其池陈键杨霞闫崇文
Owner 恒昌涂料(惠阳)有限公司
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