Auxiliary for reducing VOC (Volatile Organic Compound) of coating of transfer coating and preparation method thereof

A technology for transferring coatings and additives, applied in coatings, polyester coatings, cellulose coatings, etc., can solve the problem of inability to reduce the VOC of transfer coatings, and reduce the VOC content of coatings, save resources, and be easy to coat. Effect

Active Publication Date: 2015-02-25
YANTAI BOYUAN TECH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the deficiency that the prior art cannot reduce the VOC of the transfer paint coating, and provide a kind of auxiliary agent capable of reducing the VOC of the transfer paint coating and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, the cosolvent is selected as a mixture of ethanol, n-propyl acetate and propylene glycol methyl ether, the mixed acid is selected as a mixture of glutaric acid and succinic acid, the low-carbon alcohol is selected as methanol, and the catalyst is selected as SnCl 2 2H 2 O, cyclohexane is selected as the water-carrying agent;

[0034] Step 1: Preparation of mixed polyester: In a 100mL round bottom flask equipped with a thermometer, reflux condenser and water separator, add 6.6g of glutaric acid, 5.9g of succinic acid, 12.8g of methanol, and heat up to 50°C Stir to dissolve evenly, add 0.55g SnCl 2 2H 2 O, 20mL cyclohexane, carry out esterification reaction under reflux state. After the reaction is finished, cool down first, concentrate and remove cyclohexane and excess methanol with a rotary evaporator, distill under reduced pressure, collect fractions under a vacuum of 0.09 MPa and a temperature of 100 to 180°C to obtain a mixed polyester;

[003...

Embodiment 2

[0038] What cosolvent selects in this embodiment is the mixture of isopropanol, ethyl acetate, dimethylformamide, and what mixed acid selects is the mixture of adipic acid and malonic acid, and what low-carbon alcohol selects is ethanol, and catalyst selects SnCl 2 2H 2 O, cyclohexane is selected as the water-carrying agent;

[0039] Step 1: Preparation of mixed polyester: In a 100mL round bottom flask equipped with a thermometer, a reflux condenser and a water separator, add 7.5g of adipic acid, 5.0g of malonic acid, and 10.6g of ethanol, and heat up to 50°C Stir to dissolve evenly, add 1.5g SnCl 2 2H 2 O, 30mL cyclohexane, carry out esterification reaction under reflux state. After the reaction is finished, cool down first, use a rotary evaporator to concentrate and remove cyclohexane and excess ethanol, distill under reduced pressure, collect fractions at 100-160°C under a vacuum of 0.09MPa to obtain mixed polyester;

[0040] The second step: Preparation of VOC auxilia...

Embodiment 3

[0043]What cosolvent selects in this embodiment is the mixture of propylene glycol butyl ether, n-propyl acetate, isopropanol, what mixed acid selects is the mixture of oxalic acid, malonic acid, citric acid, and what low-carbon alcohol selects is n-propyl Alcohol, toluenesulfonic acid is selected as the catalyst, and cyclohexane is selected as the water-carrying agent;

[0044] Step 1: Preparation of mixed polyester: In a 100mL round bottom flask equipped with a thermometer, reflux condenser and water separator, add 5.5g oxalic acid, 4.0g malonic acid, 6.8g citric acid, 10.6g normal Propanol and 4.5g ethylene glycol were heated up to 50°C and stirred to dissolve evenly, then 3.6g p-toluenesulfonic acid and 30mL cyclohexane were added, and the esterification reaction was carried out under reflux. After the reaction is finished, cool down first, use a rotary evaporator to concentrate to remove cyclohexane and excess ethanol, distill under reduced pressure, collect a fraction at...

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Abstract

The invention relates to an auxiliary for reducing a VOC (Volatile Organic Compound) of a coating of a transfer coating and a preparation method thereof and belongs to the technical field of transfer coating auxiliaries. The auxiliary for reducing the VOC of the coating of the transfer coating comprises the following components in percentage by weight: 30-80% of a cosolvent and 20-70% of mixed polyesters. The auxiliary for reducing the VOC of the coating of the transfer coating provided by the invention can be used for maintaining the original performances of a transfer coating base material such as printability, strippability, solvent resistance, temperature tolerance, rub resistance and the like; the adjustment on the volatile speed of the whole solvent system of the coating can be assisted and the VOC content of the coating is effectively reduced; the use method of the auxiliary is convenient and is easy to operate, and auxiliary can be added either in a paint mixing stage or in coating synthesis and preparation; the auxiliary is easy to coat, rapid to dry and resource-saving, and energy resource waste caused by increasing the temperature to reduce the VOC content of the coating can be avoided.

Description

technical field [0001] The invention relates to a VOC-reducing additive for transfer paint coating and a preparation method thereof, belonging to the technical field of transfer paint additives. Background technique [0002] Traditional packaging materials such as tobacco and alcohol, food, and daily necessities are mainly made of aluminum foil or aluminized film directly compounded with paper. The aluminum foil and plastic film used cannot be degraded and recycled, causing environmental pollution and waste of resources. In order to protect the environment and save resources, it has been improved to transfer process production, in which the transfer coating plays a key role, which can endow the material with good film peeling properties, coating adhesion, brightness, smoothness, wear resistance, Printing adaptability, temperature resistance and other functions. At present, the transfer coating is mainly a solvent-based system, which is coated on the base film by roller coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D133/00C09D101/02C09D101/18C09D167/00C09D161/20C09D127/06C08G63/60
CPCC09D7/63C09D7/65C09D101/02C09D101/18C09D127/06C09D133/00C09D161/20C09D167/00C08L67/00
Inventor 王海平薛守成任光娟门俊岩姜伟
Owner YANTAI BOYUAN TECH MATERIALS
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