CN101676349A - Water soluble cardboard composite adhesive and preparation method thereof - Google Patents

Abstract

The invention provides a water soluble cardboard composite adhesive for cold applying and laminating of cardboards and PET or BOPP films, which is mainly prepared from crylic acid, methacrylic acid, butyl acrylate, ethyl acrylate, styrene, functional monomers, initiator, emulsifier, buffering agent, functional accessory agent, pH regulator and softened water through reactions, and also provides apreparation method for the water soluble cardboard composite adhesive. Due to adoption of the water soluble media, the composite adhesive has no pollution, eliminates hazards of harmful organic solvent to bodies of staff in production and use, greatly reduces hidden dangers of fir disasters in a using process, and has no residual harmful substances among composite films; and the quality level of oily adhesive can be completely achieved by using the emulsion type water soluble cardboard composite adhesive, and the problem in the aspect of odor can be completed solved.

Description

Water soluble cardboard composite adhesive and preparation method thereof

Technical field

The present invention relates to composite gum that a kind of paperboard and PET or the pressing of BOPP film cold compress use and preparation method thereof, relate in particular to a kind of water soluble cardboard composite adhesive and preparation method thereof

Background technology

Compound finger paperboard of paperboard and PET or BOPP film are through the cold compress pressing.And but glue also called after PET film composite gum, gold and silver cardboard composite adhesive, aluminium plating film glue etc. are widely used in all kinds of packing boxes, particularly use extensive especially at tobacco industry.

The used tackiness agent of order is mainly oily gum, the toxicity and the safety in utilization problem of oily gum are more and more outstanding, this is because the solvent that uses in the oily gum is toluene, dimethylbenzene, not only environmental pollution is big, health hazards to the operator is big, and a large amount of volatilizations in drying course, very easily cause fire.

Because the singularity of this packaging system is particularly in the tobacco industry large usage quantity, so just strict more to the requirement of residual smell.Oily gum can stay pungent smell after compound, have a strong impact on the quality of tobacco, and this also is the problem that the tobacco industry packing is had a bad headache, and each producer wishes to occur reducing the product of solvent odor very much now.

Summary of the invention

Purpose of the present invention provides a kind of water soluble cardboard composite adhesive exactly in order to address the above problem.

Another object of the present invention is to provide a kind of method for preparing water soluble cardboard composite adhesive of the present invention.

The object of the present invention is achieved like this:

The invention discloses a kind of water soluble cardboard composite adhesive, form by prepared in reaction: vinylformic acid, methacrylic acid, butyl acrylate, ethyl propenoate by following component, vinylbenzene, functional monomer, initiator, emulsifying agent, buffer reagent, functional aid, pH adjusts agent, softening water;

Described functional monomer is selected from least a in Phthalic acid, diallyl ester, Hydroxyethyl acrylate and the N hydroxymethyl acrylamide;

Described initiator is an ammonium persulphate;

Described emulsifying agent is selected from least a in sulfosuccinate and the phenolic ether sulphate;

Described buffer reagent is selected from least a in bicarbonate of ammonia and the sodium bicarbonate;

Described functional aid is selected from least a among OT75, mineral oil and the water soluble acrylic resin;

It is ammoniacal liquor that described pH adjusts agent;

The shared weight percent of above-mentioned each component is respectively: vinylformic acid 1～5%, methacrylic acid 1～5%, butyl acrylate 10～15%, ethyl propenoate 10～15%, vinylbenzene 10～20%; Functional monomer comprises Phthalic acid, diallyl ester 0～5%, Hydroxyethyl acrylate 0～5%, N hydroxymethyl acrylamide 0～5%; Initiator comprises ammonium persulphate 0～2%; Emulsifying agent comprises sulfosuccinate 0～2%, phenolic ether sulphate 0～5%; Buffer reagent comprises bicarbonate of ammonia 0～2%, sodium bicarbonate 0～1%; Functional aid comprises OT75 0～3%, mineral oil 0～1%, and the water soluble acrylic resin 0～2%; PH adjusts agent: ammoniacal liquor 0～5%; Softening water 25～40%.

Raw material of the present invention is that general raw material gets by market purchasing.

The present invention also provides a kind of preparation method of water soluble cardboard composite adhesive of the present invention, realizes by following steps:

(a) quantitative emulsifying agent, buffer reagent, softening water are joined in the reactor, obtain mixing raw material after stirring and be warming up to 70～80 ℃;

(b) quantitative vinylformic acid, methacrylic acid, butyl acrylate, ethyl propenoate, vinylbenzene, functional monomer, emulsifying agent, buffer reagent are joined in the pre-emulsification still, stir and obtain mixing raw material after 30 minutes, emit wherein 1～15% as seed liquor;

(c) mixing raw material in the step a reactor is warming up to 80～90 ℃, drop into the seed liquor among the step b after, add initiator and softening water again, control temperature of reaction kettle to 80～90 ℃;

(d) with in the remaining mixing raw material in quantitative initiator, functional monomer and the pre-emulsification still of softening water adding step b, stir and obtain compound;

(e) compound that steps d is obtained splashes in the reactor, and temperature is controlled at 80～90 ℃, and the dropping time is 3～4 hours;

(f) dropwise after, maintain the temperature at 80～90 ℃, react after 1～3 hour, be cooled to 50～60 ℃;

(g) add functional aid, treat that temperature reduces to 40 ℃, adjust discharging after the viscosity.

Compared with prior art, the invention has the beneficial effects as follows: owing to adopt aqueous medium, pollution-free, eliminated production, user of service and be subjected to the harm of harmful organic solvent health, and greatly reduce the hidden danger of fire in the use, and between composite membrane the noresidue objectionable impurities; And can reach the quality level of oily gum fully with the emulsion type water-base cardboard composite adhesive, and aspect smell, can deal with problems fully.

Embodiment

The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.

Embodiment 1 (unit: kilogram)

Prescription:

Reactor:

1. softening water 180 phenolic ether sulphates 2 bicarbonate of ammonia 0.2 sodium bicarbonate 0.3

2. softening water 17 ammonium persulphates 4

Pre-emulsification still:

3. softening water 115 phenolic ether sulphates 4 sulfosuccinates 1 bicarbonate of ammonia 0.2

4. butyl acrylate 140 ethyl propenoates 120 vinylbenzene 140 Phthalic acid, diallyl esters 5 Hydroxyethyl acrylates 5 vinylformic acid 8 methacrylic acids 7

5. softening water 8 N hydroxymethyl acrylamides 2

6. softening water 18 ammonium persulphates 4

7. mineral oil 1

8.OT75?3

9. the water soluble acrylic resin 10

10. ammoniacal liquor 8

Operation steps:

Reactor is joined rebasing liquid 1 in order, starts then to stir to be warming up to 78 ℃; Start pre-emulsification still and stir, join pre-emulsification kettle base solution 3; Be sequentially added into monomer 4 then, stir after 30 minutes, emit 30 kilograms of seed liquor; When the rebasing liquid 1 of reactor rises to 88 ℃, drop into seed liquor; And then add reactor towards still liquid 2; 85～86 ℃ of control temperature of reaction kettle; After raw material added 5,6 in the pre-emulsification still, beginning dripped in reactor, and temperature is controlled at 83～84 ℃, and the dropping time is 3～3.5 hours; After dripping end, be warming up to 88 ℃, be incubated 2 hours; Cool the temperature to 60 ℃ then, add 7, temperature is reduced to 50 ℃, adds 8 and 9, when temperature is reduced to 40 ℃, adds 10 back dischargings.

Embodiment 2 (unit: kilogram)

Prescription:

Reactor:

1. softening water 200 sulfosuccinates 3 bicarbonate of ammonia 0.2 sodium bicarbonate 0.3

2. softening water 17 ammonium persulphates 4

Pre-emulsification still:

3. softening water 95 phenolic ether sulphates 4 sulfosuccinates 1 bicarbonate of ammonia 0.2

4. butyl acrylate 160 ethyl propenoates 120 vinylbenzene 120 Phthalic acid, diallyl esters 3 Hydroxyethyl acrylates 3 vinylformic acid 3 methacrylic acids 7

5. softening water 8 N hydroxymethyl acrylamides 2

6. softening water 18 ammonium persulphates 4

7. mineral oil 1

8.OT75?3

9. the water soluble acrylic resin 10

Operation steps

Reactor is joined rebasing liquid 1 in order, starts then to stir to be warming up to 78 ℃; Start pre-emulsification still and stir, join pre-emulsification kettle base solution 3; Be sequentially added into monomer 4 then, stir after 30 minutes, emit 30 kilograms of seed liquor; When the rebasing liquid 1 of reactor rises to 88 ℃, drop into seed liquor; And then add reactor towards still liquid 2; 85～86 ℃ of control temperature of reaction kettle; After raw material added 5,6 in the pre-emulsification still, beginning dripped in reactor, and temperature is controlled at 83～84 ℃, and the dropping time is 3～3.5 hours; After dripping end, be warming up to 88 ℃, be incubated 2 hours; Cool the temperature to 60 ℃ then, add 7, temperature is reduced to 50 ℃, adds 8 and 9, discharging after temperature is reduced to 40 ℃.

Claims (3)

1. water soluble cardboard composite adhesive is formed by prepared in reaction by following component: vinylformic acid, and methacrylic acid, butyl acrylate, ethyl propenoate, vinylbenzene, functional monomer, initiator, emulsifying agent, buffer reagent, functional aid, pH adjusts agent, softening water;

Described functional monomer is selected from least a in Phthalic acid, diallyl ester, Hydroxyethyl acrylate and the N hydroxymethyl acrylamide;

Described initiator is a persulphate;

Described emulsifying agent is selected from least a in sulfosuccinate and the phenolic ether sulphate;

Described buffer reagent is selected from least a in bicarbonate of ammonia and the sodium bicarbonate;

Described functional aid is selected from least a among OT75, mineral oil and the water soluble acrylic resin;

It is ammoniacal liquor that described pH adjusts agent;

The shared weight percent of above-mentioned each component is respectively: vinylformic acid 1～5%, methacrylic acid 1～5%, butyl acrylate 10～15%, ethyl propenoate 10～15%, vinylbenzene 10～20%; Functional monomer comprises Phthalic acid, diallyl ester 0～5%, Hydroxyethyl acrylate 0～5%, N hydroxymethyl acrylamide 0～5%; Initiator comprises ammonium persulphate 0～2%; Emulsifying agent comprises sulfosuccinate 0～2%, phenolic ether sulphate 0～5%; Buffer reagent comprises bicarbonate of ammonia 0～2%, sodium bicarbonate 0～1%; Functional aid comprises OT750～3%, mineral oil 0～1%, and the water soluble acrylic resin 0～2%; PH adjusts agent: ammoniacal liquor 0～5%; Softening water 25～40%.

2. water soluble cardboard composite adhesive as claimed in claim 1 is characterized in that, described initiator is an ammonium persulphate.

3. one kind prepares the method for water soluble cardboard composite adhesive according to claim 1, may further comprise the steps:

(a) quantitative emulsifying agent, buffer reagent, softening water are joined in the reactor, obtain mixing raw material after stirring and be warming up to 70～80 ℃;

(b) quantitative vinylformic acid, methacrylic acid, butyl acrylate, ethyl propenoate, vinylbenzene, functional monomer, emulsifying agent, buffer reagent are joined in the pre-emulsification still, stir and obtain mixing raw material after 30 minutes, emit wherein 1～15% as seed liquor;

(c) mixing raw material in the step a reactor is warming up to 80～90 ℃, drop into the seed liquor among the step b after, add initiator and softening water again, control temperature of reaction kettle to 80～90 ℃;

(d) with in the remaining mixing raw material in quantitative initiator, functional monomer and the pre-emulsification still of softening water adding step b, stir and obtain compound;

(e) compound that steps d is obtained splashes in the reactor, and temperature is controlled at 80～90 ℃, and the dropping time is 3～4 hours;

(f) dropwise after, maintain the temperature at 80～90 ℃, react after 1～3 hour, be cooled to 50～60 ℃;

(g) add functional aid, treat that temperature reduces to 40 ℃, adjust discharging after the viscosity.