PVDC copolymerization emulsion, preparation and uses thereof

A copolymerization emulsion and copolymerization technology, which is applied in the direction of textiles, papermaking, coatings, paper coatings, etc., can solve the problems of PVDC emulsion discoloration, unsatisfactory use, and insufficient softness of the coating film, and achieve strong adhesion, good elasticity, and white color Effect

Active Publication Date: 2009-02-18
ZHEJIANG QUZHOU JUSU CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] CN101186666A discloses a method for preparing polyvinylidene chloride and acrylate copolymer latex, which mainly solves the discoloration problem of PVDC emulsion; CN1986583A discloses a special water-based PVDC latex for coating on special cloth and its preparation method. The content of vinylidene chloride and the content of unsaturated fatty acid

Method used

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  • PVDC copolymerization emulsion, preparation and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of PVDC Copolymer Emulsion

[0034] Components:

[0035] Mixed monomer: vinylidene chloride (VDC) 40kg

[0036] Methyl methacrylate (MMA) 2kg

[0037] Butyl Acrylate (BA) 12kg

[0038] Acrylic acid (AA) 2kg

[0039] Perfluoroalkyl ethyl acrylate 0.28kg

[0040] Soft water 45kg

[0041] Emulsifier: sodium secondary alkylbenzene sulfonate 0.9kg

[0042] A501 0.5kg

[0043] Initiator: Ammonium persulfate 35g

[0044] Sodium thiosulfate 25g

[0045] pH regulator: Glacial acetic acid 0.05kg

[0046] Operation method: In a 100L stainless steel reaction kettle, add 28kg of soft water, 0.058kg of sodium secondary alkylbenzene sulfonate, 0.07kg of A501, and 0.025kg of a pH regulator in the first stage. kg methyl methacrylate, 2.816 kg butyl acrylate and 0.16 kg acrylic acid mixed monomer, control the stirring speed to 100 rpm, stir for 5 minutes and then raise the temperature to 45°C, add dropwise 2 g ...

Embodiment 2

[0049] Repeat Example 1, the difference between this embodiment and Example 1 is that the components of the mixed monomers are:

[0050] (1) Vinylidene chloride (VDC) 38kg

[0051] (2) Methyl methacrylate (MMA) 2kg

[0052] (3) Butyl acrylate (BA) 14kg

[0053] (4) Acrylic acid (AA) 2kg

[0054] (5) Perfluoroalkyl ethyl acrylate 0.28kg

[0055] Results: A copolymer emulsion with a three-layer structure with a solid content of 56% was obtained: the core layer was 30% VDC and 70% comonomer, the middle layer was 80% VDC and 20% comonomer, and the outermost layer was 43% VDC and 57% comonomer and 0.5% C 3～6 Perfluoroester, the ratio of each layer is 10:70:20.

Embodiment 3

[0057] Repeat Example 1, the difference between this embodiment and Example 1 is that in the first stage of the operation method, add 4.2kg vinylidene chloride, 3.72kg butyl acrylate, add 27.552kg vinylidene chloride, 4.048 kg in the second stage kg butyl acrylate.

[0058] Results: A copolymer emulsion with a three-layer structure with a solid content of 56% was obtained: the core layer was 50% VDC and 50% comonomer, the middle layer was 82% VDC and 18% comonomer, and the outermost layer was 57.4% VDC and 42.6% comonomer and 0.5% C 3～6 Perfluoroester, the ratio of each layer is 15:60:25.

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Abstract

The invention provides PVDC copolymer emulsion. The copolymer emulsion is formed by mixture monomers and accessory ingredients through copolymerizing. The mixture monomer contains 65 percent to 82 percent of vinylidene chloride, 15 percent to 35 percent of unsaturated fatty acid ester monomer, 3 percent to 8 percent of unsaturated fatty acid and 0.001 percent to 2 percent of perfluoro-unsaturated fatty acid C3 to C6 ester monomer. The copolymer emulsion also contains the three-layer structural particles, the core-shell particles of which are all VDC/MMA/BA: the core layer is 20 percent to 84 percent of VDC and 16 percent and 80 percent of comonomer; the middle layer is 80 percent of VDC and 18 percent and 20 percent of comonomer; the outmost layer is 30 percent to 80 percent of VDC, 20 percent and 60 percent of comonomer and trace amount of C3 to C6 perfluoroester. The ratio of each layer is 5 to 30:25 to 70:15 to 30. The invention also provides a preparation method of the copolymer emulsion and an application of the copolymer emulsion in fields of fiberglass mesh fabrics, sponges, paper packaging materials, textiles and the like which use impregnating technical coating.

Description

technical field [0001] The invention relates to PVDC copolymer emulsion, its preparation method and its application in the fields of glass fiber mesh cloth, sponge, paper packaging material, textiles and the like coated by dipping process. Background technique [0002] In recent years, glass fiber mesh impregnated with styrene-acrylic emulsion has been widely used in energy-saving buildings. It will lose its due strength and fixing effect) and its high cost has limited its application. [0003] The main component of polyvinylidene chloride (PVDC) is vinylidene chloride (VDC), which is characterized by crystallinity, so it has high barrier function after film formation, but PVDC homopolymer has poor conjunctival properties, is not soft, and cannot Use: Coating performance and film performance are usually improved by copolymerization, and the higher the VDC component, the easier to crystallize, good barrier performance, and good water resistance, but the higher the film hardn...

Claims

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Application Information

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IPC IPC(8): C08F214/08C08F2/24C09D127/08D06M15/263D21H19/22C08F220/10C08F220/06
Inventor 陈繁荣韩金铭舒文晓苏兰辉吴宇鹏史红亮
Owner ZHEJIANG QUZHOU JUSU CHEM IND CO LTD
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