Organic water-proof oil-resist finishing agent for paper and cardboard and preparation thereof

A water-repellent, oil-repellent, organic fluorine technology, applied in the direction of water-repellent addition, anti-corrosion agent/anti-oxidant addition, etc., can solve the problems of lower ignition point of water-based dispersion liquid, increase of VOC value, unfavorable environment, etc., and achieve small emulsion particle size , low cost and high safety performance

Inactive Publication Date: 2008-04-16
SHANDONG DONGYUE POLYMER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of solvent will lead to a decrease in the ignition point of the aqueous dispersion, or it will remain in the treated material, which is very unfavorable
No matter what kind of solvent is used, it will increase the VOC value (volatile organic compounds) of the system, which is not good for the environment

Method used

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  • Organic water-proof oil-resist finishing agent for paper and cardboard and preparation thereof
  • Organic water-proof oil-resist finishing agent for paper and cardboard and preparation thereof
  • Organic water-proof oil-resist finishing agent for paper and cardboard and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 120g octadecyl methacrylate, 165g hexafluoropropylene oxide trimer hydroxypropyl methacrylate, 15g hydroxypropyl methacrylate, 24g compound emulsifier with HLB value of 12.0, 0.4 dodecyl mercaptan g was added to a 2000ml flask, heated at 50°C to melt and pre-emulsified with 550g of water dripped continuously to form an O / W emulsion, and finally the initiator (2.4g potassium persulfate) was added dropwise under the inert condition of nitrogen protection The initiator was polymerized with 50 g of aqueous solution) for 5.5 hours to obtain a water- and oil-repellent finishing agent emulsion for paper and cardboard.

[0051] Dilute the emulsion with a solid content of about 20% to 3%, then soak the paper in the diluted emulsion for 1 to 3 minutes, dry it at 120°C, cool to room temperature, and test the water repellency to reach 90 points.

Embodiment 2

[0053] 150g octadecyl methacrylate, 135g hexafluoropropylene oxide trimer hydroxypropyl methacrylate, 15g hydroxypropyl methacrylate, 24g compound emulsifier with HLB value of 12.0, 0.4 dodecyl mercaptan g is added to a 2000ml flask, heated at 50°C to melt and pre-emulsified with 550g of water dripped continuously to form an O / W emulsion, and finally the initiator (2.6g persulfur to 50g aqueous solution of ammonium initiator) polymerized for 5 hours to obtain the water and oil repellent finishing agent emulsion for paper and cardboard.

[0054] Dilute the emulsion with a solid content of about 20% to 3%, then soak the paper in the diluted emulsion for 1 to 3 minutes, dry it at 120°C, and cool it to room temperature.

Embodiment 3

[0056] With 80g octadecyl methacrylate, 80 gram cetyl acrylate, 135g hexafluoropropylene oxide trimer hydroxyethyl methacrylate, 15g hydroxypropyl methacrylate, HLB value 12.0 composite emulsifier 24g, Add 0.4g of dodecyl mercaptan to a 2000ml flask, heat it at 50°C to melt it, and add 550g of water continuously for pre-emulsification to form an O / W emulsion. agent (2.5g of potassium persulfate in 50g of aqueous solution) was polymerized for 6 hours to obtain a water- and oil-repellent finishing agent emulsion for paper and cardboard.

[0057] Dilute the emulsion with a solid content of about 20% to 3%, then soak the paper in the diluted emulsion for 1 to 3 minutes, dry it at 120°C, cool to room temperature, and test the water repellency to reach 90 points.

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Abstract

The invention provides an emulsion for waterproofing and oilproofing finishing aspect of paper or cardboard and the preparation method thereof, wherein, the emulsion comprises a) a copolymer of repeated unit formed by oxa-perfluoroalkyl group (methyl) acrylate monomer, higher fatty alcohol (methyl) acrylate monomer, (methyl) hydroxyl acrylate monomer; b) an emulsifier; c) a chain transfer agent; d) an initiator. The invention is used for waterproofing and oilproofing finishing of paper. The emulsion for waterproofing and oilproofing finishing aspect of paper or cardboard of the invention does not contain organic solvent, so not only safety performance is high, but also small affect to environment is provided when used.

Description

technical field [0001] The invention belongs to the field of paper and cardboard surface finishing. The invention relates to an emulsion of a fluorine-containing waterproof and oil-repellent finishing agent and a preparation method thereof. This emulsion is mainly used for water and oil repellent treatment on the surface of paper and cardboard. Background technique [0002] Substrates (such as woven fabrics, leather, paper, cardboard, etc.) become soiled and tarnished over time. For woven fabrics, substrates such as leather can also be restored by repeated washing; but for paper and cardboard, washing is obviously not feasible. This requires the surface treatment of paper and board before use to protect it from water and oil stains. Organic fluorine treatment agents have low interfacial tension, excellent heat resistance and chemical stability, so they can impart excellent water and oil repellency to substrates such as woven fabrics, leather, paper and cardboard. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16D21H21/38
Inventor 张永明张恒任鹤张秀华
Owner SHANDONG DONGYUE POLYMER MATERIAL
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