CN1103419A

CN1103419A - Method for producing fast low-temp. setting baking finish of acrylate resin without benzene toxicity

Info

Publication number: CN1103419A
Application number: CN 93114982
Authority: CN
Inventors: 张展洪
Original assignee: BAIYUN FINE CHEM INST BAIYUN DISTRICT GUANGZHOU CITY
Current assignee: BAIYUN FINE CHEM INST BAIYUN DISTRICT GUANGZHOU CITY
Priority date: 1993-11-30
Filing date: 1993-11-30
Publication date: 1995-06-07

Abstract

The baking finish features use of isobutyl alcohol and isobutyl acetate instead of toluene and xylene as solvent and addition of ultra-fast drying catalyst (AC), so its advantages include no benzene poison, ultra-fast drying and low-temp. solidification.

Description

Method for producing fast low-temp. setting baking finish of acrylate resin without benzene toxicity

The present invention relates to a kind of production method of coating, the production method of the ultrafast dried low-temperature curing baking finish of particularly a kind of without benzene toxicity acroleic acid resin.

Acrylic resin paint because have good guarantor's light, protect look, look shallow, weathering resistance, shock-resistant, strong adhesion, snappiness are good, and has an outstanding NBC protective performance (heatproof heat, salt fog, mould), thereby its product is widely used in senior household electrical appliance and automobile, the surface decoration of senior instrument etc. and coating.Since the sixties, because the development of petroleum industry makes the raw material sources of this product more extensive, cost descends significantly, and therefore, such paint has obtained development faster.But when producing this class paint, at first want the acrylic ester synthesizing resin, and then the adding auxiliary material is modulated into thermosetting varniss.At present, coating industry synthesizing propylene acid resin all adopts solvent polymeric technology, need to add the toluene of total amount 40% in the production process or the butanols of dimethylbenzene and 10% is made solvent, behind the modulation lacquering, owing to contain a large amount of toluene or dimethylbenzene in the paint, therefore, no matter in the use of the production process of resin or paint, the operator is in the environment that is full of toluene or dimethylbenzene steam, as everyone knows, benzene kind solvent is a kind of carcinogenic substance, and has nervus centralis and neuro anesthesia hormesis, can cause acute and chronic poisoning, in this environment, work for a long time, healthy with the serious harm worker forms occupational illness, also causes the pollution to surrounding environment simultaneously.

The production method that the purpose of this invention is to provide the ultrafast dried low-temperature curing baking finish of a kind of acrylate resin without benzene toxicity replaces toluene and dimethylbenzene to produce with other solvents, to solve environmental pollution and to ensure that the worker is healthy.

The present invention realizes by following mode: the present invention includes products production prescription and production technique two partly.

One, prescription:

1, the ultrafast dried low temperature curing resin synthesizing formula of without benzene toxicity acrylate (weight percent):

Methyl methacrylate 20-30%

Butyl acrylate 20-30%

Propylene glycol monoacrylate 5-10%

Vinylformic acid 1-5%

Isopropylcarbinol 30-40%

Isobutyl acetate 23-35%

Benzoyl peroxide 0.3-1%

Ultrafast dry catalyst (AC) 0.1-0.5%

2, the ultrafast dried low-temperature curing baking finish prescription of modulation acrylate resin without benzene toxicity (weight percent):

Without benzene toxicity acrylic resin (50%) 45-60%

Low degree of etherification trimeric cyanamide melamine formaldehyde copolymer resins (60%) 20-25%

Rutile type Titanium Dioxide 15-25%

Oxytol acetate 5-8%

Isopropylcarbinol 8-10%

Cyclohexanone 4-10%

Butyl glycol ether 3-8%

Ultrafast dry catalyst (AC) 0.1-0.5%

Two, production technique (as shown in Figure 1):

1, the acrylate resin without benzene toxicity polymerization technique:

A is warming up to 105 ℃ with (band stirs cooling and reflux device) in isobutyl acetate, the isopropylcarbinol adding reactor and opens stirring.

B adds header tank with each component monomer and initiator (benzoyl peroxide) after stirring and dissolving under the normal pressure, be warming up to 110 ℃ then and open stirring, evenly be added dropwise in the reactor, and strict control reaction temperature and rate of addition, temperature is controlled at 110 ℃ ± 2 ℃.Keep refluxing slowly drips, and the time kept refluxing 2 hours at 110 ℃-115 ℃ after dripping off mix monomer in 3 hours.Adding 0.5% initiator (dissolving with isopropylcarbinol) then continues to keep refluxing 2 hours.Cooling at last is cooled to 70 ℃, solid content be 50% acrylate resin without benzene toxicity.

2, the production technique of the ultrafast dried low-temperature curing baking finish of without benzene toxicity acrylic acid ester resin.

Acrylate resin without benzene toxicity (50%), titanium dioxide, oxytol acetate, isopropylcarbinol, cyclohexanone, butyl glycol ether are added in the special basin, use high-speed high speed dispersion 30-40 minute with the dispersion of high speed dispersor low speed again after 10 minutes then, grind with being pumped into sand mill at last, add crosslinking and curing agent low degree of etherification trimeric cyanamide melamine formaldehyde copolymer resins (60%) and pigment match colors barreling to reaching fineness after filter and package, be the ultrafast dried low-temperature curing baking finish of acrylate resin without benzene toxicity.

Paint with the present invention's production, remove and have light, Bao Se and the good weathering resistance of guarantor, outside the shock-resistance, its maximum characteristics be in the production process and use in got rid of the old technology that toluene and dimethylbenzene are made solvent, thereby changed the environmental pollution in plant produced and the construction process greatly, the investment that makes factory save a large amount of waste gas treatment equipments has ensured the healthy of direct labor and construction workman, has saved a large amount of used energy of oven dry of heating for the user simultaneously.General acrylic paint is heated baking and curing need be with 150 ℃-160 ℃ bakings 15-20 minute, and the present invention only need toast 4 minutes with 120 ℃, and not only energy-conservation but also save time, its economic benefit is very considerable.

Fig. 1 is a Production Flow Chart synoptic diagram of the present invention.

Embodiment:

1, acrylate resin without benzene toxicity synthesizing formula (weight percent):

Methyl methacrylate 20%

Butyl acrylate 20%

Propylene glycol monoacrylate 6%

Vinylformic acid 3%

Isobutyl acetate 20%

Isopropylcarbinol 30%

Benzoyl peroxide 1%

Acrylate resin without benzene toxicity (50%) 50%

Rutile type Titanium Dioxide 15%

Low degree of etherification trimeric cyanamide melamine formaldehyde copolymer resins (60%) 15%

Oxytol acetate 4%

Isopropylcarbinol 7%

Cyclohexanone 6%

Butyl glycol ether 3%

Ultrafast dry catalyst (AC) 0.3%

3, resin polymerization technology and system lacquer craftwork are all undertaken by above-mentioned processing condition and operation, and product is the ultrafast dried low-temperature curing baking finish of acrylate resin without benzene toxicity.

Claims

1, the production method of the ultrafast dried low-temperature curing baking finish of a kind of acrylate resin without benzene toxicity is characterized in that the prescription (weight percent) of synthetic resins is:

Methyl methacrylate 20-30%

Butyl acrylate 20-30%

Propylene glycol monoacrylate 5-10%

Vinylformic acid 1-5%

Isopropylcarbinol 30-40%

Isobutyl acetate 23-35%

Benzoyl peroxide 0.3-1%

Ultrafast dry catalyst (AC) 0.1-0.5%

The ultrafast dried low-temperature curing baking finish prescription of modulation acrylate resin without benzene toxicity (weight percent):

Acrylate resin without benzene toxicity (50%) 45-60%

Rutile type Titanium Dioxide 15-25%

Oxytol acetate 5-8%

Isopropylcarbinol 8-10%

Cyclohexanone 4-10%

Butyl glycol ether 3-8%

Ultrafast dry catalyst (AC) 0.1-0.5%.

2, production method according to claim 1 is characterized in that the prescription (hundred parts of ratios of weight) of synthetic resins is:

Methyl methacrylate 20%

Butyl acrylate 20%

Propylene glycol monoacrylate 6%

Vinylformic acid 3%

Isobutyl acetate 20%

Isopropylcarbinol 30%

Benzoyl peroxide 0.1%

Acrylate resin without benzene toxicity (50%) 50%

Rutile type Titanium Dioxide 15%

Oxytol acetate 4%

Isopropylcarbinol 7%

Cyclohexanone 6%

Butyl glycol ether 3%

Ultrafast dry catalyst (AC) 0.3%

3, the production technique of the ultrafast dried low-temperature curing baking finish of a kind of acrylate resin without benzene toxicity, it is characterized in that resin polymerization technology is at first isobutyl acetate and isopropylcarbinol to be added reactor to be warming up to 105 ℃ and to open stirring, evenly be added dropwise in the reactor then mix monomer (initiator is dissolved in the mix monomer), dropping and churning time were controlled at 3 hours, strict control reaction temperature is at 110 ℃ ± 2 ℃, with whole monomer droppings intact after, continue insulation and maintain 110 ℃-115 ℃, keep refluxing 2 hours, and mend dropping 0.5% benzoyl peroxide (dissolving) with isopropylcarbinol.