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Polyvinylidene chloride (PVDC) copolymer latex for medicine packaging as well as preparation method and application thereof

A technology for vinylidene chloride and packaging, which is applied in the field of polyvinylidene chloride copolymer latex for water-based pharmaceutical packaging and its preparation. It can solve the problems of high barrier property and no crystal point, and achieve high barrier property and low latex viscosity. , good softness

Active Publication Date: 2010-02-17
浙江科冠聚合物有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical defects existing in the existing polyvinylidene chloride (PVDC) latex, the purpose of this invention is to provide a kind of polyvinylidene chloride (PVDC) copolymer latex for medical packaging, which can solve the problem of not producing water when blowing bubbles to form capsules. Streaks, no crystal point, high barrier property

Method used

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  • Polyvinylidene chloride (PVDC) copolymer latex for medicine packaging as well as preparation method and application thereof
  • Polyvinylidene chloride (PVDC) copolymer latex for medicine packaging as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Kettle material:

[0026] Deionized water 40Kg Sodium dodecyl sulfate 0.7Kg

[0027] Glacial acetic acid 0.01Kg Nano SiO 2 5g

[0028] Tert-butyl hydroperoxide 2g ferrous chloride 5g;

[0029] (2) Mixed monomers:

[0030] Vinylidene chloride 51Kg Acrylonitrile 3Kg

[0031] n-butyl acrylate 4Kg methacrylic acid 2Kg;

[0032] (3) Initiator:

[0033] Initiator A: tert-butyl hydroperoxide 0.08Kg

[0034] Deionized water 10Kg

[0035] Initiator B: carved white powder 0.1Kg

[0036] Deionized water 10Kg.

[0037] (4) Specific operation process:

[0038] ①Add 40Kg of deionized water, 0.7Kg of sodium dodecylsulfonate, 0.01Kg of glacial acetic acid, 0.005Kg of ferrous chloride, and nano-SiO into the reaction kettle. 2 0.005Kg, tert-butyl hydroperoxide 0.002Kg, vacuumize in the reactor, replace with nitrogen, then vacuumize, replace with nitrogen, and then vacuumize;

[0039] ②Based on the weight of 100 parts of the mixed monomer, add 20 parts of the mixed monomer...

Embodiment 2

[0049] Still material, initiator is identical with embodiment 1, and difference is that the composition of mixed list is:

[0050] Vinylidene chloride 50Kg Acrylonitrile 3Kg

[0051] 6Kg of n-butyl acrylate and 3Kg of acrylic acid.

[0052] The preparation method of embodiment 2 is as embodiment 1.

Embodiment 3

[0054] Still material, initiator is identical with embodiment 1, and difference is that the composition of mixed list is:

[0055] Vinylidene chloride 60Kg Acrylonitrile 2Kg

[0056] 6Kg of n-butyl acrylate and 1Kg of acrylic acid.

[0057] The preparation method of embodiment 2 is as embodiment 1.

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Abstract

The invention relates to latex for medicine packaging, in particular to polyvinylidene chloride (PVDC) copolymer latex for aqueous medicine packaging and a preparation method thereof. The polyvinylidene chloride (PVDC) copolymer latex for the medicine packaging is prepared by copolymerizing a mixed monomer, an emulsifier, an initiator, a pH modifier, an auxiliary agent and nanometer materials, wherein the polyvinylidene chloride (PVDC) copolymer latex comprises the following components by the total weight percent of the mixed monomer: 70-96 percent of vinylidene chloride, 3-25 percent of acrylate monomer and 2-5 percent of acrylonitrile; and the weight percentage of the emulsifier, the initiator, the pH modifier, the auxiliary agent and the nanometer materials is as follows respectively accounting for the total weight of the latex: 0.5-5 percent of unsaturated aliphatic acid, 0.5-2 percent of the emulsifier, 0.02-0.2 percent of the initiator, 0.005-0.02 percent of the pH modifier, 0.002-0.01 percent of the auxiliary agent and 0.003-0.02 percent of the nanometer materials. The polyvinylidene chloride (PVDC) copolymer latex for the medicine packaging has low latex viscosity, good softness, high barrier property and no crystallization point.

Description

technical field [0001] The invention relates to latex for medical packaging, in particular to a polyvinylidene chloride (PVDC) copolymerized latex for water-based medical packaging and a preparation method thereof. Background technique [0002] Polyvinylidene chloride (PVDC) copolymer latex is now widely used in food packaging. Polyvinylidene chloride (PVDC) is a non-toxic, tasteless, safe and reliable high-barrier material. , also has oil resistance, corrosion resistance, taste retention, excellent moisture resistance, mildew resistance, direct contact with food and other properties, and also has excellent printing performance, and its technology is relatively mature. However, when used in pharmaceutical packaging, when polyvinylidene chloride (PVDC) latex is coated and compounded on PVC, the flexibility of polyvinylidene chloride (PVDC) is not enough, especially when the composite material is blown into capsules, due to polyvinylidene chloride The flexibility of vinyliden...

Claims

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Application Information

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IPC IPC(8): C08F214/08C08F220/14C08F220/18C08F220/20C08F220/44C08F222/02C08F220/06C08F2/26C08K3/26C08K3/36C08J7/04B65D65/02A61J3/07
Inventor 胡建强应忠芳高卫阮国富季国华
Owner 浙江科冠聚合物有限公司
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