Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of PVDC latex for egg freshness retaining coating

A technology of latex and film coating, which is applied in the field of PVDC latex preparation, can solve the problems such as the variability of eggs, and achieve the effect of extending the shelf life

Inactive Publication Date: 2016-04-13
NANTONG REPAIR AIR CHEM BIOENG
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing PVDC emulsion needs to be coated at high temperature, and eggs are easily denatured at high temperature, the purpose of the present invention is to prepare a PVDC emulsion that can be coated at low temperature by modifying PVDC

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 3g of sodium lauryl sulfate, 3g of nonylphenol polyoxyethylene ether, 60g of seed emulsion, 0.5g of acetic acid, and 500g of water into a 1L reaction vessel, start stirring, and add 150g of partial bis Vinyl chloride, 10g acrylic acid, 20g methyl methacrylate, 15g acrylonitrile mixed monomer, stir evenly, replace with nitrogen atmosphere, heat up to 45°C, pressure is 0.1MPa, add dropwise 0.5g tert-butyl hydroperoxide, 0.3 g Diaobai powder solution, start to polymerize, and start to drop 200g vinylidene chloride, 10g acrylic acid, 20g methyl methacrylate, 15g acrylonitrile mixed monomer, 3g sodium lauryl sulfate, 3g nonyl when the system pressure starts to drop Phenol polyoxyethylene ether mixed emulsifier solution, control the conversion rate to about 70% after dropping, keep the temperature constant until the reaction pressure reaches 0.02MPa, add ammonium laurate, stir evenly, recover unreacted monomers, and filter to obtain PVDC copolymer emulsion .

[0022] T...

Embodiment 2

[0026] Weigh 4g of sodium dodecylbenzenesulfonate, 2g of octylphenol ethoxylate, 50g of seed emulsion, 0.5g of acetic acid, and 500g of water into a 1L reaction vessel, start stirring, and add 100g of Vinylidene chloride, 5g acrylic acid, 10g methyl methacrylate, 25g acrylonitrile mixed monomer, stir evenly, replace with nitrogen atmosphere, heat up to 45°C, pressure 0.1MPa, add 0.5g tert-butyl hydroperoxide dropwise , 0.1g ferrous chloride solution, start to polymerize, and start dropwise adding 200g vinylidene chloride, 5g acrylic acid, 15g methyl methacrylate, 25g acrylonitrile mixed monomer, 4g dodecylbenzenesulfonate when the system pressure starts to drop Sodium laurate, 2g octylphenol polyoxyethylene ether mixed emulsifier solution, control the conversion rate to about 70%, add dropwise, keep the temperature constant until the reaction pressure reaches 0.02MPa, add ammonium laurate, stir evenly, recover unreacted monomer , and filtered to obtain PVDC copolymer emulsion....

Embodiment 3

[0032] Weigh 4g of sodium dodecylbenzenesulfonate, 2g of octylphenol ethoxylate, 100g of seed emulsion, 0.6g of acetic acid, and 500g of water into a 1L reaction vessel, start stirring, and add 200g of Vinylidene chloride, 10g of acrylic acid, 25g of methyl methacrylate, and 45g of acrylonitrile mixed monomers were stirred evenly, replaced with a nitrogen atmosphere, and the temperature was raised to 45°C with a pressure of 0.1MPa, and 1g of tert-butyl hydroperoxide, 0.2g ferrous chloride solution, start to polymerize, when the system pressure starts to drop, start to drop 200g vinylidene chloride, 15g acrylic acid, 25g methyl methacrylate, 45g acrylonitrile mixed monomer, 4g dodecylbenzenesulfonic acid Sodium, 2g octylphenol polyoxyethylene ether mixed emulsifier solution, the conversion rate is controlled to about 70%, the dropwise addition is completed, the temperature is kept constant until the reaction pressure reaches 0.02MPa, ammonium laurate is added, stirred evenly, an...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a preparation method of PVDC latex for egg freshness retaining coating. The method is characterized in that the PVDC latex comprises the following components in parts by mass: 80-90 parts of PVDC copolymer emulsion, 5-10 parts of dibutyltin dilaurate, 10-15 parts of film coalescing aid, 0.5-1.0 part of dispersant, 0.1 part of defoamer, and 10-15 parts of softened water. The latex presents a white color for a long term, is prevented from yellowing, is good in stability, has no smell, and can be directly used to coat the surface of the eggs. After coating the film, the coating is transparent and has relative good barrier properties, moisture resistance, etc.

Description

technical field [0001] The invention relates to a preparation method of PVDC latex used for egg fresh-keeping coating. Background technique [0002] Polyvinylidene chloride copolymer latex (PVDC) is a material obtained by emulsion polymerization of vinylidene chloride (VDC), acrylic acid and acrylonitrile. Because the coated film has a high oxygen barrier property, which can prolong the shelf life of food packaging, and the material is soft and transparent, it has been used in food packaging for a long time. [0003] The chicken industry in my country has a history of 4,000 years. With the continuous development of the chicken industry, the egg processing industry has also made corresponding progress. However, with the expansion of the laying hen industry in various places, the output of eggs has increased, which has caused a serious situation of oversupply of eggs in the market, resulting in losses for many laying hen farmers, and even closing down, which is one of the rea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/08C08F214/08C08F220/06C08F220/14C08F220/46C08F2/26C08F2/30
Inventor 戴骏骏葛亮朱鹏林哲国奚年英
Owner NANTONG REPAIR AIR CHEM BIOENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com