Supercharge Your Innovation With Domain-Expert AI Agents!

Modified white latex simulant

A technology of imitating white glue and modification, which is applied in the field of modified imitation white glue, which can solve the problems of poor adhesive strength film rigidity, creep resistance and heat resistance, and high cost of white latex to achieve bonding Enhanced strength, improved creep resistance and heat resistance, and wide source of raw materials

Inactive Publication Date: 2015-11-25
李立群
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that white latex has excellent performance but high cost; imitation white glue has low cost but poor performance such as bonding strength, rigidity of glued film, creep resistance and heat resistance

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

[0012] (1) In a reaction kettle with a reflux condenser and agitator, first add 890kg of deionized water and 100kg of polyvinyl alcohol, and raise the temperature from room temperature to 88-92°C at a rate of 2-2.5°C / min, and stir 30-60 minutes to completely dissolve the polyvinyl alcohol, and then stir for 1.5-2 hours to make it evenly mixed to obtain a mixed solution;

[0013] (2) Add 68kg of formaldehyde and 7kg of crotonaldehyde to the mixture in step 1, stir for 20-30min, then add an appropriate amount of hydrochloric acid (10%) to adjust the pH to 2-3;

[0014] (3) Keep the temperature of the reactor at 88-92°C, react at this temperature until foam appears and produce aldehyde-water separation, stop the reaction, and adjust the pH value to 7- with an appropriate amount of sodium hydroxide solution (30%) 8;

[0015] (4) Add urea 25kg, hydroxylamine hydrochloride 0.1kg, ammonium persulfate 0.5kg and stir for 60-70min;

[0016] (5) Cool down to 40-45°C, add 0.8kg of stear...

Embodiment 2

[0018] (1) In a reaction kettle with a reflux condenser and agitator, first add 930kg of deionized water and 100kg of polyvinyl alcohol, and raise the temperature from room temperature to 88-92°C at a rate of 2-2.5°C / min, and stir 30-60 minutes to completely dissolve the polyvinyl alcohol, and then stir for 1.5-2 hours to make it evenly mixed to obtain a mixed solution;

[0019] (2) Add 72 kg of formaldehyde and 9 kg of crotonaldehyde to the mixture in step 1, stir for 20-30 minutes, then add an appropriate amount of hydrochloric acid (10%) to adjust the pH to 2-3;

[0020] (3) Keep the temperature of the reactor at 88-92°C, react at this temperature until foam appears and produce aldehyde-water separation, then stop the reaction, and adjust the pH value to 7- with an appropriate amount of sodium hydroxide solution (30%) 8;

[0021] (4) Add urea 28kg, hydroxylamine hydrochloride 0.2kg, ammonium persulfate 0.8kg and stir for 60-70min;

[0022] (5) Cool down to 40-45°C, add 1....

Embodiment 3

[0024] (1) In a reaction kettle with a reflux condenser and agitator, first add 960kg of deionized water and 100kg of polyvinyl alcohol, and raise the temperature from room temperature to 88-92°C at a rate of 2-2.5°C / min, and stir 30-60 minutes to completely dissolve the polyvinyl alcohol, and then stir for 1.5-2 hours to make it evenly mixed to obtain a mixed solution;

[0025] (2) Add 78kg of formaldehyde and 13kg of crotonaldehyde to the mixture in step 1, stir for 20-30min, then add an appropriate amount of hydrochloric acid (10%) to adjust the pH to 2-3;

[0026] (3) Keep the temperature of the reactor at 88-92°C, react at this temperature until foam appears and produce aldehyde-water separation, then stop the reaction, and adjust the pH value to 7- with an appropriate amount of sodium hydroxide solution (30%) 8;

[0027] (4) Add urea 35kg, hydroxylamine hydrochloride 0.28kg, ammonium persulfate 1.2kg and stir for 60-70min;

[0028] (5) Cool down to 40-45°C, add 1.5kg o...

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 invention discloses a modified white latex simulant. The modified white latex simulant comprises polyvinyl alcohol, formaldehyde, butenal, urea, hydroxylamine hydrochloride, ammonium persulfate, stearic acid, wollastonite powder and deionized water. The modified white latex simulant has viscosity of 22Pa.s, bonding intensity of 5.2MPa and boiling water resistance of 20min. Unmodified white latex simulant has viscosity of 13Pa.s, bonding intensity of 3.7MPa and boiling water resistance of 10min. The modified white latex simulant has high bonding intensity close to white latex bonding intensity of 6.5MPa and has obviously improved creep resistance and heat resistance. The modified white latex simulant has the advantages of simple processes, no organic solvent, no toxicity, nonflammability, wide raw material sources and low price.

Description

technical field [0001] The invention relates to an adhesive, in particular to a modified imitation white glue. Background technique [0002] Adhesive is an indispensable material in the cigarette production process. At present, most of the adhesives used in domestic cigarette production are chemically synthesized white latex. White latex is a kind of thermoplastic adhesive prepared by emulsion polymerization of vinyl acetate as the main raw material in a dispersion medium, mainly including polyvinyl acetate homopolymer emulsion (PVAC), vinyl acetate-ethylene copolymer emulsion (VAE), vinyl acetate -Butyl acrylate copolymer emulsion (VAB), etc., is a very widely used adhesive. No matter what kind of white latex, due to the influence of production raw materials, operating technology and other conditions, the monomer conversion rate cannot reach 100%, and the production cost is slightly higher. In order to reduce costs, imitation white glue with polyvinyl acetal as the main ...

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
IPC IPC(8): C09J129/14C09J11/04C09J11/06C08F16/06C08F8/28
Inventor 李立群
Owner 李立群
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com