Unlock instant, AI-driven research and patent intelligence for your innovation.

Single-component solvent-free adhesive for compounding double-barrier cooking material and preparation method and application thereof

A one-component, adhesive technology for use in adhesives, adhesive types, polyurea/polyurethane adhesives, etc.

Active Publication Date: 2020-03-27
康达新材料(集团)股份有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems solved by the present invention is to propose a single-component solvent-free adhesive for the compounding of double-barrier cooking materials to solve the problem of compounding between double-barrier cooking materials PET, PA, aluminum foil, RCPP, etc.
It is required that the compounded material has a good appearance without problems such as white spots and bubbles; at the same time, it can withstand cooking at 125°C for more than 40 minutes

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
  • Single-component solvent-free adhesive for compounding double-barrier cooking material and preparation method and application thereof
  • Single-component solvent-free adhesive for compounding double-barrier cooking material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Put 200 parts of ethylene glycol, 150 parts of glycerol and 140 parts of 2-methyl-1,3 propanediol into the reaction kettle, add 700 parts of adipic acid while stirring, and heat to 120 ° C ~ 160 °C under nitrogen protection. ℃ for 4 hours, then raise the temperature to 200℃~250℃ for 5 hours, when the acid value is less than 35mgKOH / g, preferably less than 15mgKOH / g, start vacuuming, gradually increase the vacuum degree -0.1MPa, and finally cool down to obtain a hydroxyl value of 160mgKOH / g g of polyester polyol 1.

Embodiment 2

[0036] Heat 45 parts of polyoxypropylene diol with a molecular weight of 2000, 12 parts of polyoxypropylene triol with a molecular weight of 400, and 3 parts of bisphenol A modified diol with a molecular weight of 350 to 110-120°C for vacuum dehydration for 1.5h~ 2.5 hours, cool down to 60°C, add 38 parts of diphenylmethane diisocyanate, heat up to 110°C for 2 hours, add 1 part of curing speed modifier DMDEE, add 1 part of leveling agent BYK323 and discharge to obtain isocyanate-terminated polyurethane prepolymer P1.

Embodiment 3

[0038] 40 parts of polyester polyol 1 prepared in Example 1, 15 parts of polyoxypropylene diol with a molecular weight of 400, and 10 parts of bisphenol A modified diol with a molecular weight of 350 were heated to 110-120°C for vacuum dehydration for 1.5 h~2.5h, cool down to below 100°C, add 2 parts of aminosilane coupling agent, cool down to 60°C while stirring, add 50 parts of diphenylmethane diisocyanate, raise the temperature to 110°C for 2 hours, add 1 part of curing speed adjustment Agent N-ethylmorpholine and 2 parts of leveling agent BKY388 were discharged to obtain isocyanate-terminated polyurethane prepolymer P2.

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
peel strengthaaaaaaaaaa
peel strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a single-component solvent-free adhesive for compounding a double-barrier cooking material. The adhesive is an isocyanate-terminated single component, When the adhesive is used, the single-component solvent-free adhesive is used for compounding the double-barrier cooking material PET, PA, aluminum foil, RCPP and the like. The compounded material is required to be good in appearance and free of white-point bubbles and the like, and the product can resist boiling at 125 DEG C for more than 40 minutes. The single-component solvent-free polyurethane adhesive is an isocyanate-terminated prepolymer prepared from isocyanate, universal polyol, bisphenol A modified polyol and an auxiliary agent. The invention also discloses a preparation method and application of the single-component solvent-free polyurethane adhesive. The coating temperature of the laminating film is 60-100 DEG C and is adjusted according to the use requirements of different materials. The adhesive hasthe advantages that the sizing amount per unit area is low and the sizing material consumption cost is low; safety is good, risks of fire disasters and explosion are avoided and explosion-proof measures of solvents are not needed; and environmental protection is facilitated.

Description

technical field [0001] The invention relates to an adhesive suitable for compounding of double-barrier cooking materials, in particular to a single-component solvent-free adhesive for compounding of double-barrier cooking materials and its preparation method and application. Background technique [0002] With the increasing development of the commodity economy, the packaging industry is advancing rapidly at a pace exceeding the economic growth rate of the same period, especially the flexible packaging industry is developing rapidly in the direction of solvent-free. In addition to conventional general-purpose solvent-free adhesives and solvent-free adhesives for ordinary plastic / plastic cooking materials, the current application is relatively mature. The compounding of some double-barrier materials containing aluminum foil or aluminum-plated materials is also gradually developing in the direction of solvent-free. The biggest problem with conventional two-component solvent-fr...

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): C09J175/08C09J175/06C08G18/66C08G18/48C08G18/42C08G18/32C08G18/28
CPCC09J175/08C09J175/06C08G18/4812C08G18/4829C08G18/4241C08G18/4825C08G18/3215C08G18/4018C08G18/6674C08G18/664C08G18/289
Inventor 赵有中卫艳玲李云华邹斌
Owner 康达新材料(集团)股份有限公司