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Recoverable paper cup emulsion and preparation method thereof

A technology for recycling paper and emulsion, which is applied in papermaking, paper coating, textiles and papermaking, etc., and can solve the problems that paper cannot be recycled and reused

Inactive Publication Date: 2021-07-02
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

It is characterized by coating polyvinylidene chloride (PVDC) coating on the base paper. Although it can improve the water resistance of the paper, PVDC paper with PVDC coating cannot be recycled due to environmental protection issues.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 15kg of soft water, 10kg of EAA masterbatch with a melting point of 80°C, and 0.5kg of potassium hydroxide in the 1# reactor, close each inlet and outlet valve of the reactor and start stirring, the speed is 200 rpm, and the temperature is raised to Keep at 100°C for 2 hours to completely dissolve the EAA masterbatch, then lower the temperature to 30°C to obtain an EAA emulsion.

[0030] (2) 8kg of styrene monomer and 5kg of sodium acrylamido isopropyl sulfonate were added to material tank A, stirred at room temperature for 0.7 hours, and the stirring speed was 180 rpm to obtain a pre-emulsion solution to be prepared use.

[0031] (3) Add 9kg of soft water and 0.5kg of potassium persulfate into material tank B, stir evenly at room temperature, and prepare an initiator solution for use.

[0032] (4) Add 36kg soft water, 5kg methyl methacrylate, 5kg ethyl methacrylate, 5kg methacrylic acid in 2# reactor, open the stirring and heating device after sealing, and the...

Embodiment 2

[0038] (1) Add 16kg of soft water, 9kg of EAA masterbatch with a melting point of 85°C, and 3kg of potassium hydroxide into the 1# reactor, close the inlet and outlet valves of the reactor and start stirring, the speed is 300 rpm, and the temperature is raised to 95 ℃ for 2 hours to completely dissolve the EAA masterbatch, and then lower the temperature to 30 ℃ to obtain an EAA emulsion.

[0039] (2) 3kg of styrene monomer and 4.5kg of allyl succinic acid alkyl sodium sulfonate are added to the feed tank A, stirred at room temperature for 1 hour, and the stirring speed is 150 revolutions / min, to obtain the preliminary The emulsion is ready for use.

[0040] (3) Add 10kg of soft water and 2kg of ammonium persulfate into material tank B, stir evenly at room temperature, and prepare an initiator solution for use.

[0041](4) Add 39kg soft water, 6kg methyl methacrylate, 3kg ethyl methacrylate, 4kg methacrylic acid in 2# reactor, open the stirring and heating device after sealing...

Embodiment 3

[0047] (1) Add 17.5kg of soft water, 5kg of EAA masterbatch with a melting point of 90°C, and 2kg of sodium hydroxide in the 1# reactor, close the inlet and outlet valves of the reactor and start stirring, the speed is 250 rpm, and the temperature is raised to Keep at 98°C for 2 hours to completely dissolve the EAA masterbatch, and then lower the temperature to 30°C to obtain the EAA emulsion.

[0048] (2) Add 5 kg of styrene monomer and 1 kg of sodium acrylamido isopropyl sulfonate into material tank A, stir at room temperature for 0.5 hour, and the stirring speed is 200 rpm to obtain a pre-emulsion solution to be prepared use.

[0049] (3) Add 10.5kg of soft water and 0.3kg of ammonium persulfate into material tank B, stir evenly at room temperature, and prepare an initiator solution for use.

[0050] (4) Add 42kg soft water, 8kg methyl methacrylate, 6kg ethyl methacrylate, 2kg methacrylic acid in 2# reactor, open the stirring and heating device after sealing, and the stirr...

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Abstract

The invention provides a recoverable paper cup emulsion and a preparation method and application thereof, and the emulsion comprises the following raw materials by mass: 60-70% of soft water, 5-8% of methyl methacrylate, 3-6% of ethyl methacrylate, 2-5% of methacrylic acid, 3-8% of styrene, 1-5% of a reactive emulsifier, 0.3-2% of an initiator, 5-10% of an ethylene-acrylic acid copolymer, 0.5-3% of a dispersant and 0.2-1% of an antifoaming agent. The reactive emulsifier is selected from sodium acrylamido isopropyl sulfonate and / or sodium allylsuccinic acid alkyl ester sulfonate. The emulsion provided by the invention has excellent waterproof performance. The polymerization product is mixed with the ethylene-acrylic acid copolymer, due to the existence of carboxyl groups in the EAA emulsion and the action of hydrogen bonds, the adhesive force of the coating on the surface of paper is improved, meanwhile, the coating has good heat sealing strength at a certain temperature, and lap adhesive does not need to be coated when a paper cup is made.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an emulsion for recyclable paper cups and a preparation method thereof. Background technique [0002] Disposable paper cups are essential supplies in people's daily life, especially in the catering industry, where the usage of disposable paper cups is very large. Disposable paper cups used in the market today basically spray hot-melt polyethylene (PE) plastic particles evenly on the surface of the paper to form coated paper. Compared with ordinary paper, coated paper has waterproof, Features such as oil resistance, such as the high-temperature-resistant coated paper involved in patent CN107738491 A. However, after the paper is coated with a film, it is very difficult to recycle and separate the PE layer and then pulp the waste of the disposable paper cups made after use. If it is allowed to decompose naturally, it will take a long time, causing great pollu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/20D21H21/16C08F212/08C08F220/14C08F220/18C08F220/06C08F220/58C08F222/24C08F2/26
CPCD21H19/20D21H21/16C08F212/08C08F220/14C08F2/26C08F220/1802C08F220/06C08F220/585C08F222/24
Inventor 黄宏存袁业兴陈招强胡远南
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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