CN102924648B - Water-based resin for colouring aluminium-foil paper and preparation method for same - Google Patents

Abstract

The invention discloses a water-based resin for colouring aluminium-foil paper and a preparation method for the water-based resin, wherein the water-based resin has two glass transition temperatures Tg and Tg' in a zone of 25-38 DEG C and a zone of 70-80 DEG C; and the raw materials are composed of the following constituents: styrene, acrylic acid, butyl acrylate, methyl methacrylate, benzoyl peroxide, isopropanol, ethanol amine and water. The prepared water-based resin for colouring aluminium-foil paper disclosed by the invention has the beneficial effects of being high in solid content, low in viscosity, without toxic and harmful organic solvent volatile matters during production and use processes, and pollution-free to environment, and the product is colourless, non-toxic, without pungent smell, and harmless to a human body; and due to a special hard chain and soft chain structure, the product is excellent in adhesion force, wear resistance and folding resistance, high in smoothness, and capable of forming a transparent and bright resin layer on the surface of the aluminium-foil paper.

Description

A kind of water-base resin for aluminium-foil paper colouring and preparation method thereof

[technical field] the present invention relates to package printing material, is specifically related to a kind of water-base resin for aluminium-foil paper colouring and preparation method thereof.

[background technology] wrapping material have extremely important effect to safeguarding the quality of commodity and the sale of commodity.Aluminium-foil paper, as package lining paper, by embossing, produces ridge design, increases stereoscopic sensation and gorgeous sense, can play moisture-proof role, is used for maintaining the required storage condition of commodity; In addition, also have the effect of special antiultraviolet, high temperature resistant, choke is effective, can extend the life-span of commodity, is widely used in the packing of the products such as food, cigarette, and the market requirement increases day by day.

Because the smoothness of aluminum foil lining paper is had relatively high expectations, must carry out surface treatment to aluminium-foil paper.Aqueous aluminum foil paper use surface smoothing that chromoresin can make aluminum foil lining paper, wear-resisting, have metalluster.At present, what aluminum foil lining paper used that chromoresin adopts is solvent type resin, and this solvent type resin is because containing a large amount of organic solvents, and smell is large, volatile, to environment.How to change this present situation, carry out ten The Eight Great Passes of party in the spirit of preserving the ecological environment, become the urgent problem of printing packaging technical field.

[summary of the invention] the present invention is directed to the problems referred to above, provides a kind of environmentally safe, to nontoxic water-base resin for aluminium-foil paper colouring of human body and preparation method thereof.

A water-base resin for aluminium-foil paper colouring, is characterized in that, has at 25-38 ℃ interval

with at 70-80 ℃

two second-order transition temperatures, raw material is comprised of following component, and the parts by weight of its component are as follows:

Vinylbenzene 10-25 part

Vinylformic acid 15-30 part

Butyl acrylate 10-40 part

Methyl methacrylate 20-50 part

Benzoyl peroxide 0.8-2.5 part

Virahol 80-150 part

Thanomin 5-20 part

Water 20-120 part.

Described vinylbenzene, methyl methacrylate are hard monomer, can improve copolymer resin second-order transition temperature (

), polymericular weight, hardness and tensile strength.

Described vinylformic acid is principal monomer, and its carboxyl having (COOH) can improve the water-soluble of resin.

Described butyl acrylate is soft monomer, can make copolymer resin have good snappiness and extensibility.

Described benzoyl peroxide is as initiator, because the cloud density of O-O key in benzoyl peroxide repels greatly and mutually, and easily fracture, the particularly better effects if of polymerization at 60-90 ℃.

Described Virahol, as solvent, can improve dispersion stabilization as water miscible organic solvent, and relatively environmental protection.

Described thanomin, as neutralizing agent, can neutralize this water-base resin, improves the water-soluble of resin.

A preparation method for the water-base resin of painting for aluminium-foil paper, is characterized in that, by following steps, is made:

(1) by 0.8-2.5 part benzoyl peroxide initiator, be dissolved in the monomer that is mixed with 10-25 part vinylbenzene, 15-30 part vinylformic acid, 10-40 part butyl acrylate, 20-50 part methyl methacrylate, stand-by;

(2) 20-60 part Virahol is added in reactor, be then warming up in reactor and occur refluxing;

(3) when in question response still, temperature reaches 80-82 ℃, start at the uniform velocity to drip 90% of monomer mixture stand-by in step (1), dropping 20-25 part per hour, and the time for adding of monomer was controlled in 3-4 hour, in dropping process, the temperature-stable of reactor is at 80-82 ℃;

(4) continue the temperature in reactor to be controlled at 80-82 ℃, remaining 10% monomer mixture in step (1) was dropwised in 3-5 minute, be then incubated 2 hours;

(5) by reactor cooling, and add wherein remaining 60-90 part isopropanol solvent;

(6) when question response still temperature is down to 60 ℃, by 5-20 part thanomin and 20-120 part water dissolution good after, slowly drip and start amination, add rear insulation discharging in 30 minutes, be water-base resin of the present invention.

Compared with prior art, beneficial effect is in the present invention: the solid content that the aqueous aluminum foil paper of preparation is used chromoresin is high, and viscosity is low, and has the interval at 25-38 ℃ of long-chain blocked

with interval at 70-80 ℃

two second-order transition temperatures, produce and use procedure without poisonous and hazardous organic solvent volatile matter, can accomplish environmentally safe, and product colourless, nontoxic, have no irritating odor, harmless; Because this product has special hard chain and soft chain structure, make it have excellent sticking power, wear-resisting folding resistance and high smoothness, can form on aluminium-foil paper surface the resin layer of transparent light.

[embodiment] the present invention is described in detail below in conjunction with specific examples.

Embodiment 1:

The preparation method of this routine water-base resin is prepared as follows:

1, by 1.5 parts of benzoyl peroxide initiators, be dissolved in the monomer that is mixed with 15 parts of vinylbenzene, 23.5 parts of vinylformic acid, 22 parts of butyl acrylates, 50 parts of methyl methacrylates, stand-by;

2,50 parts of Virahols are added in reactor, be then warming up in reaction flask and occur refluxing;

When 3, in question response still, temperature reaches 80-82 ℃, start at the uniform velocity to drip 90% of monomer mixture stand-by in step 1, dropping 20-25 part per hour, and the time for adding of monomer was controlled in 3-4 hour, in dropping process, the temperature-stable of reactor is at 80-82 ℃;

4, continue the temperature in reactor to be controlled at 80-82 ℃, remaining 10% monomer mixture in step 1 was dropwised in 3-5 minute, be then incubated 2 hours;

5, by reactor cooling, and add wherein remaining 75 parts of isopropanol solvents;

When 6, question response still temperature is down to 60 ℃, by 16 parts of thanomins and 20 parts of water dissolution good after, slowly drip and start amination, add rear insulation discharging in 30 minutes, be water-base resin of the present invention.

Embodiment 2:

The preparation method of this routine water-base resin is prepared as follows:

1, by 0.9 part of benzoyl peroxide initiator, be dissolved in the monomer that is mixed with 10 parts of vinylbenzene, 17 parts of vinylformic acid, 24 parts of butyl acrylates, 33 parts of methyl methacrylates, stand-by;

2,35 parts of Virahols are added in reactor, be then warming up in reaction flask and occur refluxing;

When 3, in question response still, temperature reaches 80-82 ℃, start at the uniform velocity to drip 90% of monomer mixture stand-by in step 1, dropping 20-25 part per hour, and the time for adding of monomer was controlled in 3-4 hour, in dropping process, the temperature-stable of reactor is at 80-82 ℃;

4, continue the temperature in reactor to be controlled at 80-82 ℃, remaining 10% monomer mixture in step 1 was dropwised in 3-5 minute, be then incubated 2 hours;

5, by reactor cooling, and add wherein remaining 60 parts of isopropanol solvents;

When 6, question response still temperature is down to 60 ℃, by 13 parts of thanomins and 30 parts of water dissolution good after, slowly drip and start amination, add rear insulation discharging in 30 minutes, be water-base resin of the present invention.

Embodiment 3:

The preparation method of this routine water-base resin is prepared as follows:

1, by 2.5 parts of benzoyl peroxide initiators, be dissolved in the monomer that is mixed with 25 parts of vinylbenzene, 27 parts of vinylformic acid, 32 parts of butyl acrylates, 45 parts of methyl methacrylates, stand-by;

2,60 parts of Virahols are added in reactor, be then warming up in reaction flask and occur refluxing;

When 3, in question response still, temperature reaches 80-82 ℃, start at the uniform velocity to drip 90% of monomer mixture stand-by in step 1, dropping 20-25 part per hour, and the time for adding of monomer was controlled in 3-4 hour, in dropping process, the temperature-stable of reactor is at 80-82 ℃;

4, continue the temperature in reactor to be controlled at 80-82 ℃, remaining 10% monomer mixture in step 1 was dropwised in 3-5 minute, be then incubated 2 hours;

5, by reactor cooling, and add wherein remaining 90 parts of isopropanol solvents;

When 6, question response still temperature is down to 60 ℃, by 20 parts of thanomins and 100 parts of water dissolution good after, slowly drip and start amination, add rear insulation discharging in 30 minutes, be water-base resin of the present invention.

After testing, the present invention is for water-base resin and the market like product comparison of aluminium-foil paper colouring, and its technical indicator is as shown in the table:

Project	Embodiment 1	Embodiment 2	Embodiment 3	Market like product
					Have no irritating odor	Nothing	Nothing	Nothing	Have
Solid content	48%	42%	45%	30%
					Viscosity (being coated with-4,25 ℃)	18±2 s	20±2 s	20±2 s	20±2 s
With	32 ℃ and 76 ℃	35 ℃ and 75 ℃	36 ℃ and 73 ℃	54℃
					Film adhesive	Coating does not come off	Coating does not come off	Coating does not come off	Coating slightly comes off
Gloss (60 °)	145	138	141	117
					Wear resistance	Nothing	Mild wear	Nothing	Mild wear

Claims (2)

1. for a water-base resin for aluminium-foil paper colouring, it is characterized in that, benzoyl peroxide initiator is dissolved in the monomer that is mixed with vinylbenzene, vinylformic acid, butyl acrylate, methyl methacrylate, stand-by; Virahol is added in reactor, be then warming up in reactor and occur refluxing; When in question response still, temperature reaches 80-82 ℃, start at the uniform velocity to drip 90% of stand-by monomer mixture, dropping 20-25 part per hour, and the time for adding of monomer was controlled in 3-4 hour, in dropping process, the temperature-stable of reactor is at 80-82 ℃; Remaining 10% monomer mixture was dropwised in 3-5 minute, be then incubated 2 hours; By reactor cooling, and add wherein isopropanol solvent; When question response still temperature is down to 60 ℃, by after thanomin and water dissolution, slowly drips and start amination, add rear insulation discharging in 30 minutes, be water-base resin of the present invention; Have at 25-38 ℃ interval

with at 70-80 ℃

two second-order transition temperatures, raw material is comprised of following component, and the parts by weight of its component are as follows:

Vinylbenzene 10-25 part

Vinylformic acid 15-30 part

Butyl acrylate 10-40 part

Methyl methacrylate 20-50 part

Benzoyl peroxide 0.8-2.5 part

Virahol 80-150 part

Thanomin 5-20 part

Water 20-120 part.

2. a preparation method for the water-base resin of painting for aluminium-foil paper, is characterized in that, by following steps, is made:

(1) by 0.8-2.5 part benzoyl peroxide initiator, be dissolved in the monomer that is mixed with 10-25 part vinylbenzene, 15-30 part vinylformic acid, 10-40 part butyl acrylate, 20-50 part methyl methacrylate, stand-by;

(2) 20-60 part Virahol is added in reactor, be then warming up in reactor and occur refluxing;

(3) when in question response still, temperature reaches 80-82 ℃, start at the uniform velocity to drip 90% of monomer mixture stand-by in step (1), dropping 20-25 part per hour, and the time for adding of monomer was controlled in 3-4 hour, in dropping process, the temperature-stable of reactor is at 80-82 ℃;

(4) continue the temperature in reactor to be controlled at 80-82 ℃, remaining 10% monomer mixture in step (1) was dropwised in 3-5 minute, be then incubated 2 hours;

(5) by reactor cooling, and add wherein remaining 60-90 part isopropanol solvent;

(6) when question response still temperature is down to 60 ℃, by 5-20 part thanomin and 20-120 part water dissolution good after, slowly drip and start amination, add rear insulation discharging in 30 minutes, be water-base resin of the present invention.