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

Autohension polyvinylidene chloride emulsion for coating and preparation method thereof

A polyvinylidene chloride, self-adhesive technology, applied in the direction of coating, can solve the problem of lack of adhesion, and achieve good dispersion performance, uniform slip performance and excellent results

Inactive Publication Date: 2013-01-16
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the existing PVDC emulsions need to be pre-coated with primers when they are used for coating films, but they have no adhesion, the purpose of the present invention is to provide a self-adhesive PVDC emulsion for coating, which is used for coating During the process, the coating is directly coated without coating the primer, and the coating film produced has good oxygen barrier performance

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Autohension polyvinylidene chloride emulsion for coating and preparation method thereof
  • Autohension polyvinylidene chloride emulsion for coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 18 kg of vinylidene chloride, 1.2 kg of acrylic acid, 2 kg of butyl acrylate, 2 kg of ethyl methacrylate, 1.2 kg of acrylonitrile, 0.2 kg of ammonium persulfate, 0.4 kg of OP-10, and 0.2 kg of ethanol kg and 14.8 kg of demineralized water, placed in separate raw material barrels. First, add a small amount (accounting for about one-third of the total amount) of more than one raw material and demineralized water into the reactor for mixing, start stirring at a stirring speed of 120 rpm, and slowly heat up to 55°C for pre-polymerization . Then, the remaining 5 kinds of monomers, ammonium persulfate, OP-10, ethanol and demineralized water were added continuously and evenly within 1 hour, and the stirring was continued for 1 hour. After cooling and standing, 40 kg of solid content was obtained. 63% PVDC copolymer emulsion.

[0025] Take 29.25 kg of the above-prepared PVDC copolymer emulsion, put it into a stainless steel container, start stirring, and set the stirring...

Embodiment 2

[0027] Take 38.4 kg of vinylidene chloride, 2.24 kg of acrylic acid, 3.6 kg of butyl acrylate, 3.36 kg of ethyl methacrylate, 2.08 kg of acrylonitrile, 0.4 kg of potassium persulfate, 0.64 kg of OP-10, and 0.32 kg of ethanol kg and 28.96 kg of demineralized water, placed in separate raw material barrels. First, add a small amount (accounting for about one-third of the total amount) of raw materials and demineralized water into the reactor for mixing, start stirring at a stirring speed of 140 rpm, and slowly heat up to 58°C for pre-polymerization . Then, the remaining 5 kinds of monomers, potassium persulfate, OP-10, ethanol and demineralized water were added continuously and evenly within 1 hour, and continued to stir for 1 hour. After cooling and standing, 80 kg of solid content was obtained. 63.8% PVDC copolymer emulsion.

[0028]Take 59.84 kg of the above-prepared PVDC copolymer emulsion, put it into a stainless steel container, start stirring, and set the stirring speed ...

Embodiment 3

[0030] Take 50 kg of vinylidene chloride, 2.5 kg of acrylic acid, 4.2 kg of butyl acrylate, 3 kg of ethyl methacrylate, 2 kg of acrylonitrile, five monomers, 0.2 kg each of potassium persulfate and ammonium persulfate, and OP-10 0.6 kg, 0.3 kg of ethanol and 37 kg of demineralized water are placed in separate raw material barrels. First, add a small amount (accounting for about one-third of the total amount) of more than one raw material and demineralized water into the reactor for mixing, start stirring at a stirring speed of 150 rpm, and slowly heat up to 60°C for pre-polymerization . Then, the remaining 5 kinds of monomers, ammonium persulfate, ammonium persulfate, OP-10, ethanol and demineralized water were added continuously and uniformly within 1 hour, and the stirring was continued for 1.5 hours. After cooling and standing, 100 kg of PVDC copolymer emulsion with a solids content of 63%.

[0031] Take 70 kg of the above-prepared PVDC copolymer emulsion, put it into a s...

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

PropertyMeasurementUnit
peel strengthaaaaaaaaaa
thicknessaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an autohension polyvinylidene chloride (PVDC) emulsion for coating and a preparation method thereof. The autohension polyvinylidene chloride emulsion for coating comprises, by weight, 65% to 80% of modified PVDC copolymerization emulsion, 0.5% to 5% of adhesion promoters, 3% to 5% of slip agents, 3% to 5% of abherents and 13.5% to 20% of softened water, and the modified PVDC copolymerization emulsion comprises, by weight, 45% to 60% of vinylidene chloride, 1% to 3% of acrylic acid, 2% to 5% of butyl acrylate, 0.5% to 5% of ethyl methacrylate, 0.5% to 3% of acrylonitrile, 0.3% to 0.5% of chain initiators, 0.1% to 1% of emulsifying agents, 35.5% to 37% of softened water and 0.1% to 0.5% of defoaming agents. According to the autohension polyvinylidene chloride emulsion for the coating, the emulsion can be directly coated without coating a base gel during the coating process, a prepared coating film has a good antioxygen performance, the process of precoating the base gel is omitted, the cost is saved, and the autohension polyvinylidene chloride emulsion for the coating is safe and environment-friendly.

Description

technical field [0001] The invention relates to a self-adhesive polyvinylidene chloride (hereinafter referred to as PVDC) emulsion for coating and a preparation method thereof, belonging to the field of new polymer materials. Background technique [0002] In the plastic coating industry, before coating the functional topcoat, it is necessary to apply a layer of primer to enhance the adhesion between the coating and the plastic substrate film. When producing barrier coating films, PVDC coatings with very good oxygen barrier properties on the market are selected, and a primer layer must be used to make the PVDC coatings firmly adhere to the plastic film. Existing primers for coating are mainly divided into two categories: solvent-based primers and water-based primers. The price of solvent-based primer is low, and it is very volatile after coating, and the primer layer can be dried quickly, but the production environment is harsh and does not meet the requirements of environme...

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): C09D127/08C09D7/12C08F214/12C08F220/06C08F220/18C08F220/44
Inventor 邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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