Polyvinylidene chloride copolymer emulsion for pharmaceutical packing coating and preparation method and application thereof

A polyvinylidene chloride and copolymer emulsion technology, which is applied in the field of polyvinylidene chloride copolymer emulsion, can solve problems such as insufficient emulsion stability, emulsion stability defects, and insufficient emulsion stability, achieving low cost and excellent flexibility , The effect of eliminating foam

Active Publication Date: 2013-04-24
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent CN101649015 relates to vinylidene chloride copolymerized latex for medical packaging and its preparation method. The latex uses mixed monomers containing vinylidene chloride, acrylate monomers, acrylonitrile, and unsaturated fatty acids. The preparation method adopts segmental Add monomer emulsion polymerization, although this patent solves the problem of polyvinylidene chloride emulsion softness, the barrier properties of latex are improved by adding nano-materials such as nano-calcium carbonate or nano-silica, but calcium carbonate and silica It has a certain influence on the stability of the emulsion, and it will play a role in breaking the emulsion. The emulsion stability of the latex is not enough, which brings inconvenience to the application of coating
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  • Polyvinylidene chloride copolymer emulsion for pharmaceutical packing coating and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0051] 1. Raw material preparation: mix 90kg of vinylidene chloride, 5kg of 2-ethylhexyl acrylate, 4.5kg of methyl methacrylate, and 0.5kg of methacrylic acid, and stir for 2 hours to make a mixed monomer; mix tert-butyl Add 160 g of hydrogen peroxide into 8 kg of deionized water and stir and mix to make a tert-butyl hydroperoxide solution; add 160 g of sodium formaldehyde sulfoxylate to 8 kg of deionized water and stir and mix to make a solution of sodium formaldehyde sulfoxylate; Add 600g of sodium dodecylsulfonate and 600g of sodium dodecylbenzenesulfonate into water and mix, add deionized water to 20kg and carry out cold dispersion for 2 hours to make a mixed emulsifier solution;

[0052]2. Seed polymerization: 50kg of deionized water, 24g of ammonium acetate, 5g of ferrous chloride, 150g of sodium dodecylbenzenesulfonate and 400g of 2A-1 seed emulsifier, seal the kettle, and replace with nitrogen 3 times, vacuumize, inhale 3% mixed monomer as seed monomer, cold disperse f...

Embodiment 2

[0063] 1. Raw material preparation: mix 94kg of vinylidene chloride, 3.4kg of 2-ethylhexyl acrylate, 2.3kg of butyl methacrylate, and 0.3kg of methacrylic acid, and stir for 2 hours to make a mixed monomer; mix tert-butyl Add 160g of base hydrogen peroxide into 8kg of deionized water and stir and mix to make a tert-butyl hydroperoxide solution; add 600g of sodium dodecylsulfonate and 600g of sodium dodecylbenzenesulfonate into water and mix, add deionized Water to 20kg for cold dispersion for 2 hours to make a mixed emulsifier solution;

[0064] 2. Seed polymerization: 50kg of deionized water, 24g of ammonium acetate, 5g of ferrous chloride, 150g of sodium dodecylbenzenesulfonate and 400g of 2A-1 seed emulsifier, seal the kettle, and replace with nitrogen 3 times, vacuumize, inhale 3% mixed monomer as seed monomer, cold disperse for 0.5h, heat up to 47°C, pump in initiator tert-butyl hydroperoxide solution, formaldehyde sulfoxylate at a feeding rate of 8kg / 24h Sodium hydrogen...

Embodiment 3

[0067] 1. Raw material preparation: mix 93kg of vinylidene chloride, 4.2kg of 2-ethylhexyl acrylate, 2.3kg of methyl methacrylate, and 0.5kg of methacrylic acid, and stir for 2 hours to make a mixed monomer; mix tert-butyl Add 160g of base hydrogen peroxide into 8kg of deionized water and stir and mix to make a tert-butyl hydroperoxide solution; add 800g of sodium dodecylsulfonate and 800g of sodium dodecylbenzenesulfonate into water and mix, add deionized Water to 20kg for cold dispersion for 2 hours to make a mixed emulsifier solution;

[0068] 2. Seed polymerization: 50kg of soft water, 24g of ammonium acetate, 5g of ferrous chloride, 150g of sodium dodecylbenzenesulfonate and 400g of 2A-1 seed emulsifier, seal the kettle, and replace with nitrogen for 3 times , vacuumize, inhale 3% mixed monomer as seed monomer, cold disperse for 0.5h, heat up to 47°C, pump in initiator tert-butyl hydroperoxide solution, sodium formaldehyde sulfoxylate at a feeding rate of 8kg / 24h solutio...

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Abstract

The invention provides polyvinylidene chloride copolymer emulsion for pharmaceutical packing coating and a preparation method and application thereof. The copolymer emulsion is manufactured by adopting of seeded emulsion polymerization and adding of microcrystalline wax in the process of vacuum desorption, and parts by weight of components of the copolymer emulsion is calculated by 100 parts including 50 parts of monomer mixture, initiating agent, seeded emulgator and mixed emulgator. The monomer mixture comprises 90-94% vinylidene chloride, 3-5% crylic acid-2-phthalic acid ester, 2-5% metacrylic acid ester monomer and 0.2-1.5% methylacrylic acid, the initiating agent comprises organic peroxides and sodium formaldehyde sulfoxylate, the seeded emulgator comprises sodium dodecyl benzene sulfonate and non-ionic emulsifier, and the mixed emulgator comprises two different secondary chain alkyl sulfonates. The obtained pharmaceutical packing coating is good in separation performance (west separation and oxygen separation), low in vinylidene chloride residuals, and low in cost, a quality guarantee period of pharmaceutical packing reaches 3 years and is up to an international standard of plastic uptake drug packing, copolymer emulsion stability is good, and a quality guarantee period of the emulsion is more than two years.

Description

technical field [0001] The invention provides a polyvinylidene chloride copolymer emulsion for medical packaging coatings, a preparation method and application thereof. Background technique [0002] Polyvinylidene chloride is a non-toxic, tasteless, safe and reliable material with high oxygen resistance and moisture resistance. It also has excellent oil resistance, corrosion resistance, taste retention and printing performance. Therefore, polyvinylidene chloride copolymer latex is used in It is widely used in food packaging, but it is rarely used in medical packaging because the requirements of medical packaging are more stringent. Patent CN101649015 relates to vinylidene chloride copolymerized latex for medical packaging and its preparation method. The latex uses mixed monomers containing vinylidene chloride, acrylate monomers, acrylonitrile, and unsaturated fatty acids. The preparation method adopts segmental Add monomer emulsion polymerization, although this patent solve...

Claims

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Application Information

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IPC IPC(8): C08F214/08C08F220/18C08F220/06C08F220/14C08F2/30C08F2/26C09D127/08
Inventor 方勇邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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