Acrylic emulsion for kraft paper as well as preparation method and application of acrylic emulsion

A technology of acrylic emulsion and kraft paper, used in papermaking, paper coatings, textiles and papermaking, etc., can solve the problem that the coating cannot be made into pulp, etc., and achieve the effect of avoiding surface migration, improving flexibility, and improving heat sealing performance.

Pending Publication Date: 2021-11-12
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to environmental protection issues of PVDC, the coating cannot be made into pulp. If the waste is burned, it will produce hydrogen chloride, dioxin and other toxic and harmful substances to the human body and the surrounding environment.

Method used

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  • Acrylic emulsion for kraft paper as well as preparation method and application of acrylic emulsion
  • Acrylic emulsion for kraft paper as well as preparation method and application of acrylic emulsion
  • Acrylic emulsion for kraft paper as well as preparation method and application of acrylic emulsion

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Experimental program
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Effect test

preparation example Construction

[0033] The application also provides a preparation method for acrylic emulsion for kraft paper, comprising the following steps:

[0034] Mixing 8-12 parts by weight of hard monomers, 6-10 parts by weight of soft monomers and 1-5 parts by weight of functional monomers to obtain mixed monomers;

[0035] Mixing 9.0-12 parts by weight of soft water and 0.3-2 parts by weight of emulsifier to obtain an emulsifier solution;

[0036] Mixing 13-16 parts by weight of soft water and 0.1-10 parts by weight of an initiator to obtain an initiator solution;

[0037] Mix 37-52 parts by weight of soft water, 15wt% of mixed monomers, 8wt% of emulsifier solution, and 4wt% of initiator solution to vacuumize, reheat, add remaining mixed monomers to the obtained mixed solution, emulsify Agent solution, initiator solution;

[0038] Add 3-8 parts by weight of modifying agent and 0.2-1.0 parts by weight of defoamer to the obtained mixed solution to obtain acrylic emulsion for kraft paper.

[0039] ...

Embodiment 1

[0050] (1) Raw material ratio and specific type limitation:

[0051]

[0052] (2) Preparation method:

[0053] (1) Add hard monomer, soft monomer and functional monomer into material tank A, stir evenly at room temperature, make mixed monomer, and set aside;

[0054] (2) Part of soft water (accounting for 15% of the total amount) and emulsifier are added in the B feed tank, stirred evenly at room temperature, made into emulsifier solution, and set aside;

[0055] (3) part soft water (accounting for 20% of total amount) and initiator join in the C material tank, stir, are made into initiator solution, stand-by;

[0056] (4) Add the remaining soft water, 15% mixed monomer, 8% emulsifier solution, 4% initiator solution to the reactor, vacuumize to - (0.01-0.06) MPa after sealing, start stirring and heating device, the stirring speed is set at 150-200r / min, after the temperature reaches 85-90°C, keep warm for 0.5-1 hour, and continuously add the prepared mixed monomer, emulsi...

Embodiment 2

[0059] (1) Raw material ratio and specific type limitation:

[0060]

[0061] (2) Preparation method:

[0062] (1) Add hard monomer, soft monomer and functional monomer into material tank A, stir evenly at room temperature, make mixed monomer, and set aside;

[0063] (2) Part of soft water (accounting for 15% of the total amount) and emulsifier are added in the B feed tank, stirred evenly at room temperature, made into emulsifier solution, and set aside;

[0064] (3) part soft water (accounting for 20% of total amount) and initiator join in the C material tank, stir, are made into initiator solution, stand-by;

[0065] (4) Add the remaining soft water, 15% mixed monomer, 8% emulsifier solution, 4% initiator solution to the reactor, vacuumize to - (0.01-0.06) MPa after sealing, start stirring and heating device, the stirring speed is set at 150-200r / min, after the temperature reaches 85-90°C, keep warm for 0.5-1 hour, and continuously add the prepared mixed monomer, emulsi...

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PUM

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Abstract

The invention provides an acrylic emulsion for kraft paper. The acrylic emulsion is prepared from a hard monomer, a soft monomer, a functional monomer, an emulsifier, an initiator, a modifier, a defoaming agent and soft water. The invention also provides a preparation method of the acrylic emulsion for kraft paper. The invention further provides composite kraft paper which comprises kraft paper and a coating. A coating formed by coating kraft paper with the acrylic emulsion provided by the invention has good heat sealability and water vapor blocking effect, and the performance reaches the GB / T 36392-2018 food packaging coated paper standard. Used coated cowhide can be recycled and re-pulped, and the acrylic polymer coating on the kraft paper can be used as a filler of paper pulp, so that resources can be recycled.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an acrylic emulsion for kraft paper and a preparation method thereof. Background technique [0002] Plastic film is widely used in food packaging because of its good toughness, good moisture resistance, and easy to carry. However, plastic film is not degradable. In recent years, the problem of white pollution caused by discarded plastic film has become more and more serious. Because kraft paper is recyclable and has a certain thickness and strength, it can be applied to packaging materials such as sausages, peanuts, melon seeds, etc. The application of non-toxic and heat-sealable food packaging is limited. [0003] In order to make kraft paper packaging materials have certain moisture-proof and heat-sealing properties, hot-melt polyethylene (PE) plastic particles are usually evenly sprayed on the surface of kraft paper to form coated kraft paper. Coated kraft paper ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/48C08F220/18C08F220/58C08F220/38C08F212/08C08F228/02C08F2/26D21H19/20D21H21/14
CPCC08F220/48C08F212/08C08F220/1802C08F2/26D21H19/20D21H21/14C08F220/58C08F220/382C08F2500/26C08F220/1804C08F228/02C08F220/1808
Inventor 黄宏存袁业兴朱清梅陈穆伟
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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