Organosilicon vinyl acetate-acrylic emulsion and preparation method thereof and redispersible emulsion powder prepared from organosilicon vinyl acetate-acrylic emulsion

A vinegar-acrylic emulsion and silicone technology, applied in the field of emulsions, can solve the problems of poor bonding strength and water resistance, and poor bonding strength and water resistance of redispersible latex powder, so as to overcome the poor bonding strength and water resistance, improve the Water resistance and redispersibility, added protection

Inactive Publication Date: 2017-03-15
YOUNGWOO CHEMTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor bonding strength and water resistance of the vinegar-acrylic emulsion in the prior art, and poor bonding strength and water resistance of the prepared redispersible latex powder, the purpose of the present invention is to provide a silicone vinegar-acrylic emulsion Its preparation method and prepared redispersible latex powder

Method used

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  • Organosilicon vinyl acetate-acrylic emulsion and preparation method thereof and redispersible emulsion powder prepared from organosilicon vinyl acetate-acrylic emulsion

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Embodiment 1

[0026] The invention provides a silicone-acrylic emulsion, which comprises: 8kg of vinyl acetate, 1.2kg of butyl acrylate, 0.5kg of functional monomer, 0.2kg of crosslinking monomer, 0.1kg of silane coupling agent, protective colloid 0.3kg, emulsifier 0.02kg, buffer 0.02kg, redox initiator 0.02kg, water 9kg. Among them, the functional monomer is isodecyl acrylate; the crosslinking monomer is diethylene glycol dimethacrylate; the silane coupling agent is vinyltriethoxysilane; the protective colloid has a degree of polymerization of 1000 and a degree of alcoholysis It is 88% polyvinyl alcohol; the emulsifier is fatty alcohol polyoxyethylene ether; the buffer is anhydrous sodium acetate; the redox initiator is benzoyl peroxide / sucrose.

[0027] The present invention also provides a kind of preparation method of organosilicon vinegar acrylic emulsion, the method comprises the following steps:

[0028] (1) Mix and stir 0.3kg of protective colloid, 4.5kg of water, and 0.02kg of emu...

Embodiment 2

[0034] The invention provides a silicone-acrylic emulsion, which comprises: 7kg of vinyl acetate, 1.6kg of butyl acrylate, 0.8kg of functional monomer, 0.4kg of crosslinking monomer, 0.2kg of silane coupling agent, protective colloid 0.6kg, emulsifier 0.1kg, buffer 0.04kg, redox initiator 0.04kg, water 10kg. Among them, the functional monomer is isotridecyl methacrylate; the crosslinking monomer is 1,3 butanediol dimethacrylate; the silane coupling agent is vinyltrimethoxysilane; the protective colloid is polymerized Polyvinyl alcohol with a degree of 500 and an alcoholysis degree of 88%; the emulsifier is a mixture of alkyl sulfate and alkylphenol polyoxyethylene ether at a mass ratio of 1:1.5; the buffer is sodium bicarbonate; redox initiator For tert-butyl hydroperoxide / carved white block.

[0035] The present invention also provides a kind of preparation method of organosilicon vinegar acrylic emulsion, the method comprises the following steps:

[0036] (1) Mix and sti...

Embodiment 3

[0042] The invention provides a silicone-acrylic emulsion, which comprises: 7kg of vinyl acetate, 3kg of butyl acrylate, 1.5kg of functional monomer, 0.1kg of crosslinking monomer, 0.02kg of silane coupling agent, and 1kg of protective colloid , emulsifier 0.5kg, buffer 0.05kg, redox initiator 0.05kg, water 12kg. Wherein, the functional monomer is octadecyl methacrylate; the crosslinking monomer is glycidyl methacrylate; the silane coupling agent is γ-(2,3-glycidoxy)propyltrimethoxysilane; The protective colloid is polyvinyl alcohol with a polymerization degree of 500 and an alcoholysis degree of 88%; the emulsifier is a mixture of sulfosuccinate and alkylphenol polyoxyethylene ether at a mass ratio of 1:2; the buffer is sodium bicarbonate ; The redox initiator is hydrogen peroxide / tartaric acid.

[0043] The present invention also provides a kind of preparation method of organosilicon vinegar acrylic emulsion, the method comprises the following steps:

[0044] (1) 1kg of pr...

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Abstract

The invention discloses organosilicon vinyl acetate-acrylic emulsion and a preparation method thereof and redispersible emulsion powder prepared from the organosilicon vinyl acetate-acrylic emulsion. The emulsion is prepared from, by mass, 60-80 parts of vinyl acetate, 12-30 parts of butyl acrylate, 5-15 parts of a functional monomer, 1-6 parts of a crosslinking monomer, 0.2-3 parts of a silane coupling agent, 3-10 parts of protective colloid, 0.2-5 parts of an emulsifying agent, 0.2-0.6 part of a buffering agent, 0.2-0.6 part of a redox initiator and 90-120 parts of water. According to the organosilicon vinyl acetate-acrylic emulsion, by adopting a pre-emulsification method, the emulsion stability is greatly improved, the gelation phenomenon caused by instability of the emulsion in the polymerization process is effectively reduced, and the emulsion preparation success rate is increased; by introducing the crosslinking monomer, the functional monomer and the silane coupling agent into macromolecular chains of a polymer, crosslinking points on the polymer are increased, and a dense three-dimensional net is formed during the film forming process, so that the water resistance is improved, and then the application property of the redispersible emulsion powder in the application fields of building mortar, building waterproof paint and the like is promoted.

Description

technical field [0001] The invention relates to an emulsion, in particular to an organosilicon acetate acrylic emulsion, a preparation method thereof and a prepared redispersible latex powder. Background technique [0002] With my country's "13th Five-Year Plan", "Belt and Road", "Asian Infrastructure Investment Bank" and other important strategic deployments successively introduced and established, the construction of infrastructure construction will reach an unprecedented scene. Redispersible latex powder adhesive in construction dry-mix mortar is an indispensable element in construction, and its demand will increase by leaps and bounds. [0003] At present, many emulsions used to prepare redispersible latex powder on the market have high water absorption rate after film formation, and poor performance in terms of bonding strength and water resistance in the cement parameter system, which also leads to the use of other emulsions. The prepared latex powder is also poor in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F218/08C08F220/18C08F222/14C08F230/08C08F220/10C08F220/32C08F4/40C08F2/26C08F2/30C04B24/26
CPCC04B24/26C08F2/26C08F2/30C08F4/40C08F218/08C04B2103/0057C08F220/1804C08F220/1811C08F222/14C08F230/08C08F220/1818C08F220/325C08F220/10
Inventor 何立挺
Owner YOUNGWOO CHEMTECH
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