CN102924648A - 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 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 the quality of safeguarding commodity and the sale of commodity.Aluminium-foil paper by embossing, produces ridge design as package lining paper, increases stereoscopic sensation and gorgeous sense, can play moisture-proof role, is used for keeping the required storage condition of commodity; In addition, also have the effect of special antiultraviolet, high temperature resistant, choke is effective, can prolong 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, and 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, metalluster arranged.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 that is used for the aluminium-foil paper colouring of human body and preparation method thereof.

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

With at 70-80 ℃ Two second-order transition temperatures, raw material is comprised of following each 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 that has (COOH) can improve the water-soluble of resin.

Described butyl acrylate is soft monomer, can be so that copolymer resin has good snappiness and extensibility.

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

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

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

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

(1) with 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 the reactor, then be warming up to appearance backflow in the reactor;

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

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

(5) with the reactor cooling, and to wherein adding remaining 60-90 part isopropanol solvent;

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

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

With in 70-80 ℃ of interval

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 the aluminium-foil paper surface 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 prepares as follows:

1, with 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 the reactor, then be warming up to appearance backflow in the reaction flask;

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

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

5, with the reactor cooling, and to wherein adding remaining 75 parts of isopropanol solvents;

When 6, question response still temperature is down to 60 ℃, 16 parts of thanomins and 20 parts of water dissolution are good after, slowly drip the beginning 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 prepares as follows:

1, with 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 the reactor, then be warming up to appearance backflow in the reaction flask;

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

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

5, with the reactor cooling, and to wherein adding remaining 60 parts of isopropanol solvents;

When 6, question response still temperature is down to 60 ℃, 13 parts of thanomins and 30 parts of water dissolution are good after, slowly drip the beginning 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 prepares as follows:

1, with 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 the reactor, then be warming up to appearance backflow in the reaction flask;

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

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

5, with the reactor cooling, and to wherein adding remaining 90 parts of isopropanol solvents;

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

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

Project	Embodiment 1	Embodiment 2	Embodiment 3	The 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. a water-base resin that is used for the aluminium-foil paper colouring is characterized in that, has in 25-38 ℃ of interval With at 70-80 ℃

Two second-order transition temperatures, raw material is comprised of following each 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 who is used for the water-base resin of aluminium-foil paper colouring is characterized in that, is made by following steps:

(1) with 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 the reactor, then be warming up to appearance backflow in the reactor;

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

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

(5) with the reactor cooling, and to wherein adding remaining 60-90 part isopropanol solvent;

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