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Alcohol-soluble acrylic resin

An acrylic resin, alcohol-soluble technology, applied in the field of alcohol-soluble acrylic resin, can solve problems such as toxicity and volatility, and achieve the effects of moderate adhesion, good toughness, strong practicability and industrialization promotion value.

Inactive Publication Date: 2016-11-02
SHANGHAI WEIQUAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

General acrylic resins need to be dissolved in organic solvents such as toluene, xylene, methyl ethyl ketone, cyclohexanone, etc. when used. This type of solvent not only has volatile characteristics, but also has certain toxicity. To develop a kind of solvent that can be used with low toxicity or Non-toxic solvent acrylic resin, on the one hand, can improve the environment, and on the other hand, can reduce the poison to the operator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The copolymerization reaction is carried out by bulk polymerization process.

[0022] Soft monomer: 20 parts by mass of ethyl acrylate.

[0023] Hard monomer: 5 parts by mass of methyl methacrylate; 70 parts by mass of isobutyl methacrylate; 5 parts by mass of hydroxyethyl methacrylate.

[0024] Initiator: use lauryl peroxide, 1,4-di-tert-butyl peroxycyclohexanedicarboxylate, tert-butyl peroxide 2-ethylhexanoate, 1,1-di-tert-butyl peroxide-3, 3,5-trimethylcyclohexane complex initiator, consumption is 0.25 mass parts.

[0025] Molecular weight regulator: dodecyl mercaptan is used in an amount of 0.59 parts by mass.

[0026] Dichloromethane and stearic acid: 0.1 parts by mass.

[0027] After testing, the obtained polymer: acrylic resin had a glass transition temperature of 33° C. and a weight average molecular weight of 55,000.

Embodiment 2

[0029] The copolymerization reaction is carried out by suspension polymerization process.

[0030] Soft monomer: 10 parts by mass of n-butyl acrylate; 15 parts by mass of methyl acrylate.

[0031] Hard monomer: 25 parts by mass of ethyl methacrylate; 45 parts by mass of isobutyl methacrylate; 5 parts by mass of hydroxyethyl methacrylate.

[0032] The initiator is a composite initiator of lauryl peroxide and di-tert-butyl peroxycyclohexanedicarboxylate, and the total amount used is 0.3 parts by mass.

[0033] The molecular weight regulator is a compound formed of dodecylmercaptan, α-methylstyrene and its dimer at a mass ratio of 5:1, and the total amount used is 0.5 parts by mass.

[0034] Dichloromethane and stearic acid: 0.2 parts by mass.

[0035] After testing, the obtained polymer: acrylic resin had a glass transition temperature of 31° C. and a weight average molecular weight of 62,000.

Embodiment 3

[0037] The copolymerization reaction is carried out by solution polymerization process.

[0038] Soft monomer: 25 parts by mass of ethyl acrylate.

[0039] Hard monomer: 10 parts by mass of methyl methacrylate; 5 parts by mass of styrene; 5 parts by mass of hydroxyethyl methacrylate; 55 parts by mass of ethyl methacrylate.

[0040] As the initiator, azobisisobutyronitrile is used in an amount of 0.5 parts by mass.

[0041] The molecular weight regulator is a compound of isobutyl mercaptan and α-methylstyrene and its dimer, and the dosage is 0.6 parts by mass;

[0042] Dichloromethane and stearic acid: 0.25 parts by mass.

[0043] Using ethanol as a solvent, the solid content of the reaction system was 45%.

[0044] After testing, the obtained polymer: acrylic resin had a glass transition temperature of 41° C. and a weight average molecular weight of 48,000.

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Abstract

The invention provides an alcohol-soluble acrylic resin. The alcohol-soluble acrylic resin is prepared from hard monomers with the glass transition temperature being higher than 25DEG C and soft and hard monomers with the glass transition temperature being lower than 25DEG C according to a mass ratio of 50:50-90:10 through a free radical copolymerization reaction; the soft monomers are selected from at least one of n-butyl methacrylate, methyl acrylate, ethyl acrylate, n-butyl acrylate, isooctyl acrylate, lauryl methacrylate and ethoxyethyl methacrylate; and the hard monomers are selected from at least one of methyl methacrylate, methyl methacrylate, isobutyl methacrylate, hydroxyethyl methylacrylate, hydroxypropyl methacrylate and styrene. The glass transition temperature of the alcohol-soluble acrylic resin is 25-45DEG C, and the weight average molecular weight of the alcohol-soluble acrylic resin is 30,000-100,000. The alcohol-soluble acrylic resin has moderate adhesion and good toughness, can be dissolved in ethanol and other alcoholic solvents, and can meet use performance requirements of environmentally-friendly inks and environmentally-friendly coatings.

Description

Technical field: [0001] The invention relates to the field of polymer materials, in particular to an alcohol-soluble acrylic resin. technical background [0002] Acrylic resin refers to a type of high molecular polymer resin prepared by free radical polymerization with acrylic acid and / or methacrylic acid series unsaturated compounds as monomers. It has excellent mechanical properties and weather resistance, and is widely used in coatings, Ink, construction, aviation and other fields. Various acrylic resins with different properties can be prepared by choosing different monomer ratios. General acrylic resins need to be dissolved in organic solvents such as toluene, xylene, methyl ethyl ketone, cyclohexanone, etc. when used. This type of solvent not only has volatile characteristics, but also has certain toxicity. The non-toxic solvent-based acrylic resin can improve the environment on the one hand, and reduce the poison to operators on the other. Contents of the inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/28C08F212/08C08F2/38C08F2/44C08K5/09C08K5/02
CPCC08F2/38C08F2/44C08F220/18C08F220/1804C08K5/02C08K5/09C08F220/14C08F220/281C08F212/08
Inventor 张薇薇任宇力于嫣张懿一
Owner SHANGHAI WEIQUAN NEW MATERIAL TECH CO LTD
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