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Room temperature self-crosslinking acrylic ester emulsion

An acrylate and self-crosslinking technology, applied in the field of polymers, can solve the problems of imine side reaction curing time, affect the application effect of emulsion, etc., and achieve good balance, good wear resistance and good drying effect

Inactive Publication Date: 2012-07-18
NANJING REGAL POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used carbonyl / hydrazine cross-linking type and epoxy cross-linking type have the disadvantages of prone to side reactions of ammonia and ketone carbonyl to form imines and too long curing time, which affects the application effect of the emulsion.

Method used

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  • Room temperature self-crosslinking acrylic ester emulsion
  • Room temperature self-crosslinking acrylic ester emulsion
  • Room temperature self-crosslinking acrylic ester emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add 536 grams of deionized water, 5 grams of sodium lauryl sulfate, 10 grams of disodium salt of fatty alcohol polyoxyethylene ether succinic sulfonate, and 3 grams of secondary alcohol ethoxylate into the reaction kettle, start stirring, and mix evenly. Heat to 40°C.

[0043] 50 grams of n-butyl acrylate, 60 grams of methacrylic acid, 175 grams of styrene, 55 grams of n-butyl methacrylate and 15 grams of N-methylolacrylamide were placed in a beaker and stirred evenly.

[0044] Add 3 grams of potassium persulfate to the reaction kettle, then add 20% monomer mixture and 1 gram of cumene hydroperoxide, and stir for 10 minutes.

[0045] Add 5.5 grams of sodium dodecyl diphenyl ether disulfonate to the remaining monomer mixture, and stir evenly. Continue to add dropwise to the reaction kettle, and the dropwise addition is completed in about 2 hours. Then, after incubating at 85° C. for 1 hour, 0.5 g of sodium persulfate was added dropwise, and the dropwise was completed i...

Embodiment 2

[0048] Add 200 grams of deionized water and 10 grams of fatty alcohol polyoxyethylene ether sodium sulfate into the reaction kettle, start stirring and mixing evenly, and heat to 80°C.

[0049] 10 grams of fatty alcohol polyoxyethylene ether sodium sulfate, 10 grams of methacrylic acid, 15 grams of acrylic acid and 350 grams of n-butyl methacrylate and 5 grams of diacetone acrylamide, 40 grams of methyl methacrylate, 10 grams of 1, 4-butanediol diacrylate was placed in a beaker, and stirred evenly to obtain a stable pre-emulsion.

[0050] Dissolve 1.5 grams of ammonium persulfate in 300 grams of deionized water to obtain an aqueous solution of ammonium persulfate, add 10% into the reaction kettle, then add 10% of the pre-emulsion, and stir for 5 minutes.

[0051] Add the remaining pre-emulsion and initiator solution dropwise to the reaction kettle, and finish dropping in 100 minutes. Then keep it warm at 82°C for 1.5h.

[0052]Cool down to 30°C, add 5 grams of ammonia water ...

Embodiment 3

[0054] Add 415.7 grams of deionized water, 25 grams of sodium dodecyl diphenyl ether disulfonate, 5 grams of fatty alcohol polyoxyethylene ether ammonium sulfate, and 5 grams of secondary alcohol ethoxylate into the reaction kettle, start stirring, and mix evenly , heated to 60°C.

[0055] 100 grams of n-butyl acrylate, 40 grams of ethyl acrylate, 200 grams of methyl methacrylate, 50 grams of methacrylic acid, 5 grams of glycidyl methacrylate, and 1 g of vinyl triethoxysilane were placed in a beaker, Stir to obtain a homogeneous monomer mixture.

[0056] 100 g of deionized water, 20 g of ethanolamine, 15 g of ammonium bicarbonate and 15 g of zinc oxide were mixed and stirred for 1 hour to obtain a clear zinc oxide solution.

[0057] Add 0.5 g of ammonium persulfate and 0.5 g of sodium persulfate into the reaction kettle, drop the monomer mixture for 2 hours, add 0.3 g of tert-butyl hydroperoxide into the reaction kettle after dropping the monomer, adjust the reaction temperat...

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Abstract

The invention discloses a room temperature self-crosslinking acrylic ester emulsion. The emulsion comprises deionized water, an initiator, an emulsifier, a vinyl aromatic compound, carboxyl-containing olefin monomers, alkyl acrylate unsaturated monomers of C4-C12, methacrylate unsaturated monomers of C4-C20 and functional monomers. The emulsion is prepared with an emulsion polymerization method by adding a pH regulator, a curing agent and a metallic cross linker. The emulsion has the advantages of high glossiness, good abrasive resistance, water resistance and alcohol resistance, has good dryness under high humidity, can be applied to different coating fields and is also suitable for floor wax formulas of polishing-free wax, spray cleaning, cleaning wax polish and the like. The emulsion can be applied to various rigid base materials such as PVC (Polyvinyl Chloride), boards and composite boards and has good balance between detergent resistance and removability.

Description

technical field [0001] The present invention relates to a polymer, specifically a room temperature self-crosslinking acrylate emulsion, especially an acrylate emulsion with good wear resistance, water resistance and chemical resistance to vinyl substrates, PVC boards and other substrates . Background technique [0002] Water-based paint and water-based paint with styrene-acrylic emulsion as the main component have high gloss and color retention, anti-fouling and low cost, so they are the main products in the domestic water-based paint market; , Insufficient wear resistance and chemical resistance are also common problems of styrene-acrylic emulsions. In response to the above problems, many studies have been carried out in recent years to find countermeasures. The first method is to use reactive emulsifiers. However, reactive emulsifiers are expensive and have limited sources; gel slagging is prone to occur when preparing emulsions, so the development is slow. The second ...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/18C08F220/06C08F220/58C08F2/24C08F222/14C08F220/14C08F220/32C08F230/08C09D125/14C09D133/10C09D133/12C09D7/12C09G1/04
Inventor 傅乐峰余洁郑柏存
Owner NANJING REGAL POLYMER
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