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Method for preparing environmentally friendly paper coating agent by using water dispersible resin of ethylene-(meth)acrylic acid polymer, and use thereof

A methacrylic acid copolymer, methacrylic acid technology, applied in paper coatings, water repellent addition, material mixture addition and other directions, can solve the problem of mixing alkali metal compounds and ammonia, alkylamines with low volatility, bad odor, etc. question

Inactive Publication Date: 2015-11-25
李炳奭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is used as a coating agent for paper for food packaging, there is a problem that since the volatility of alkylamines is low, alkylamines remain after coating on paper, thus causing a bad smell, and there is no mention of the use of the product or food packaging Use paper products, and there is no description of the mixed use of alkali metal compounds and ammonia water

Method used

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  • Method for preparing environmentally friendly paper coating agent by using water dispersible resin of ethylene-(meth)acrylic acid polymer, and use thereof
  • Method for preparing environmentally friendly paper coating agent by using water dispersible resin of ethylene-(meth)acrylic acid polymer, and use thereof
  • Method for preparing environmentally friendly paper coating agent by using water dispersible resin of ethylene-(meth)acrylic acid polymer, and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] 240 g of PRIMACOR 5980i (acrylic acid content: 20.5% by mass, MFR=300 g / 10 minutes), 728.48 g of ion-exchanged water, 5.07 g of KOH, and 26.45 g of ammonia water were charged into a 1500 ml autoclave, and stirred at a temperature of 100° C. at a stirring speed of 1200 rpm for 2 hours. At this time, the degree of neutralization (neutralization ratio with respect to the number of moles of carboxyl groups of the ethylene-acrylic acid copolymer) (KOH+ammonia) was 75 mol%, and the molar ratio of KOH / ammonia was 15 / 85. Thereafter, after cooling to 50° C. or lower, the aqueous dispersion was obtained by packaging. The solid content concentration of the obtained aqueous dispersion liquid was 24 mass %, and the viscosity was 400 cps / 25 degreeC.

Embodiment 2

[0096] 240 g of NUCREL2806 (acrylic acid content: 18% by mass, MFR=60 g / 10 minutes), 731.40 g of ion-exchanged water, 4.00 g of DMEA, and 24.59 g of ammonia water were added to a 1500 ml autoclave, and stirred at a temperature of 100° C. at a stirring speed of 1200 rpm for 2 hours. At this time, the degree of neutralization (neutralization ratio to the number of moles of carboxyl groups in the ethylene-acrylic acid copolymer) (DMEA+aqueous ammonia) was 75 mol%, and the mol% ratio of DMEA / aqueous ammonia was 10 / 90. After that, it is cooled to below 50° C., and then packaged to obtain an aqueous dispersion. The solid content concentration of the obtained aqueous dispersion liquid was 24 mass %, and the viscosity was 7,200 cps / 25 degreeC.

Embodiment 3

[0098] 230 g of NUCREL2806 (acrylic acid content: 18% by mass, MFR=60 g / 10 minutes), 740.16 g of ion-exchanged water, 11.51 g of DMEA, and 18.33 g of ammonia water were added to a 1500 ml autoclave, and stirred at a temperature of 100° C. at a stirring speed of 1200 rpm for 2 hours. At this time, the degree of neutralization (neutralization ratio with respect to the number of moles of carboxyl groups of the ethylene-acrylic acid copolymer) (DMEA+aqueous ammonia) was 75 mol%, and the mol% ratio of DMEA / aqueous ammonia was 30 / 70. After that, it is cooled to below 50° C., and then packaged to obtain an aqueous dispersion. The solid content concentration of the obtained aqueous dispersion liquid was 23 mass %, and the viscosity was 10,000 cps / 25 degreeC.

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Abstract

The present invention relates to a preparation of a paper molded product made with an environmentally friendly paper coating agent having remarkable water resistance, oil resistance, heat sealing, alkaline water dissolution and the like by using a water dispersible coating solution prepared by adding a quencher, a slipping agent, an antifoaming agent and the like, which are FDA approved, to a dispersed resin water, which is prepared by mixing an alkali metal hydroxide, an amine, ammonia water and the like with an ethylene-acrylic acid copolymer or an ethylene-methacrylic acid copolymer or a mixture thereof, and polymerizing the same in an aqueous medium.

Description

technical field [0001] The invention relates to the manufacture of an environmentally friendly paper molding for food packaging. The environmentally friendly paper molding for food packaging is made by applying a water-dispersed coating liquid to paper. The water-dispersed coating liquid is made by mixing the matting agent, smoothing agent, defoamer, etc. certified by the U.S. FDA with the water-dispersed resin liquid, and the water-dispersed resin liquid is produced in An ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, or a mixture of these polymers is produced by mixing and neutralizing alkali metal hydroxides, amines, ammonia water, and the like. Background technique [0002] Generally speaking, in food, solids refer to water, oil or food containing them, and are packaged in plastic bags, aluminum foil or plastic wrapping paper. In recent years, due to the seriousness of environmental problems, it is urgent to develop alternative environmentally ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/02C08L23/08C08L33/04D21H19/58
CPCC08J3/02B65D65/38C08J3/05C08J2333/02C08L23/08C08L33/02D21H17/07D21H17/37D21H17/375D21H17/675D21H17/74D21H19/20D21H19/58D21H21/16C08J2323/08C08J3/03C08L33/04B65D3/06D21H5/0072D21H19/12
Inventor 李炳奭
Owner 李炳奭
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