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

A technology of polyvinylidene chloride and copolymer emulsion, applied in the field of polyvinylidene chloride copolymer emulsion, which can solve the problems of insufficient stability of latex emulsion, defects of emulsion stability, insufficient emulsion stability, etc., and achieve less foam and low cost , Excellent softness

Inactive Publication Date: 2013-04-24
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Abstract
  • 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 is to separate It is prepared by emulsion polymerization of adding monomers in a segment. Although this patent solves the problem of polyvinylidene chloride emulsion softness, the barrier properties of latex are improved by adding nanomaterials such as nano-calcium carbonate or nano-silicon dioxide, but calcium carbonate and silicon dioxide have a certain influence on the stability of the emulsion, and will play a role in breaking the emulsion. The emulsion stability of the latex is not enough, which brings inconvenience when it is applied to the coating
Patent CN1523164 relates to the preparation and coating method of latex paint for disposable paper tableware. The mixed monomer of acrylic acid or methacrylic acid is prepared by seed emulsion polymerization, but the same emulsifier sodium alkylbenzene sulfonate is used in the process of seed polymerization and emulsion polymerization. Although this patent can meet the usual requirements of polyvinylidene chloride Barrier properties, etc., but the stability of the prepared emulsion also has certain defects
[0003] In view of the problem of insufficient emulsion stability in the current polyvinylidene chloride emulsion proposed above, the present invention provides a polyvinylidene chloride copolymer emulsion for pharmaceutical packaging coatings and a preparation method thereof

Method used

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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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Embodiment 1

[0053]1. Raw material preparation: Mix 108kg of vinylidene chloride, 6kg of 2-ethylhexyl acrylate, 5.4kg of butyl methacrylate, and 0.6kg 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 1500g of sodium sulfonate emulsifier, 800g of 2A-1 emulsifier, and 2kg of COPS-1 emulsifier into water and mix, add deionized water to 20kg, and carry out cold dispersion for 2 hours to make a mixed emulsifier solution;

[0054] 2. Seed polymerization: 50kg of deionized water or soft water, 24g of auxiliary ammonium acetate, 5g of ferrous chloride, 150g of sodium dodecylbenzenesulfonate and 400g of MA-80 emulsifier, and seal the kettle. Nitrogen replacement for 3 times, vacuuming, inhalation of 3...

Embodiment 2

[0065] 1. Preparation of raw materials: Mix 112.8kg of vinylidene chloride, 4.08kg of 2-ethylhexyl acrylate, 2.76kg of ethyl methacrylate, and 0.36kg of methacrylic acid, and stir for 2 hours to make a mixed monomer; Add 160 g of butyl hydroperoxide into 8 kg of deionized water and stir and mix to make tert-butyl hydroperoxide solution; add 160 g of sodium formaldehyde sulfoxylate into 8 kg of deionized water and stir and mix to make sodium formaldehyde sulfoxylate Solution: add 1800g of sodium dodecylsulfonate, 900g of MA-80 emulsifier, and 2.2kg of COPS-1 emulsifier into water and mix, add deionized water to 20kg for cold dispersion for 2 hours, and make a mixed emulsifier solution;

[0066] 2. Seed polymerization: 50kg of deionized water or soft water, 24g of auxiliary ammonium acetate and 5g of ferrous chloride, 150g of sodium dodecylbenzenesulfonate and 400g of 2A-1 emulsifier are used to seal the seed emulsifier. Nitrogen replacement for 3 times, vacuuming, inhalation of...

Embodiment 3

[0069] 1. Preparation of raw materials: Mix 111.6kg of vinylidene chloride, 5.04kg of 2-ethylhexyl acrylate, 2.76kg of methyl methacrylate, and 0.6kg of methacrylic acid, and stir for 2 hours to make a mixed monomer; Add 160 g of butyl hydroperoxide into 8 kg of deionized water and stir and mix to make tert-butyl hydroperoxide solution; add 160 g of sodium formaldehyde sulfoxylate into 8 kg of deionized water and stir and mix to make sodium formaldehyde sulfoxylate Solution: Add 1700g of sodium dodecylbenzenesulfonate, 700g of 2A-1 emulsifier, and 3kg of COPS-1 emulsifier into water and mix, add deionized water to 20kg for cold dispersion for 2 hours, and make a mixed emulsifier solution;

[0070] 2. Seed polymerization: 50kg of deionized water or soft water, 24g of auxiliary ammonium acetate and 5g of ferrous chloride, 150g of sodium dodecylbenzenesulfonate and 400g of 2A-1 emulsifier are used to seal the seed emulsifier. Nitrogen replacement for 3 times, vacuuming, inhalatio...

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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 are calculated by 100 parts including 60 parts of monomer mixture, initiating agent, seeded emulgato, mixed emulgator and addition agent. 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 tert-butyl hydroperoxide and sodium formaldehyde sulfoxylate, the seeded emulgator comprises sodium dodecyl benzene sulfonate and non-ionic emulsifier, and the mixed emulgator comprises sodium sulfonate emulgator, non-ionic emulsifier and negative ion reaction type emulsifier. 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 is to separate It is prepared by emulsion polymerization of adding monomers in a...

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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