Acrylic resin for transfer ink

Abstract

The invention discloses an acrylic resin for transfer ink. The acrylic resin is prepared by performing copolymerization on soft monomers of which the glass transition temperatures are lower than 25 DEG C and hard monomers of which the glass transition temperatures are higher than 25 DEG C according to a mass ratio of 55 :45-95 :5, wherein the soft monomers are selected from at least one of 2-methylpropenoic acid dinbutyl phthalate, methyl acrylate, ethyl acrylate, butyl acrylate, acrylic di-iso-octyl sebacate, and 2-methylpropenoic acid glycerol trilaurate; the hard monomers are selected from at least one of 2-methylpropenoic acid methyl ester, 2-methylpropenoic acid ethyl ester, 2-methylpropenoic acid butyl acetate and cinnamene. The glass transition temperature of the acrylic resin provided by the invention ranges from 28 to 40 DEG C, the weight-average molar mass is 50,000 to 400,000, and the Tu-4 cup viscosity is 100-200 seconds. The acrylic resin has moderate adhesive force and better tenacity, and the acrylic resin can meet the requirement for the service performance of the transfer ink.

Description

technical field

[0001] The invention relates to an acrylic resin for transfer printing ink, which belongs to the technical field of polymer materials. Background technique

[0002] Transfer ink refers to the ink printed on special paper that can be transferred to other substrates due to heating. Since the transfer printing ink is attached to the base tape first, and then the required part of the ink layer is transferred to the surface of the object to be printed by heat during use. Therefore, the transfer printing ink needs to have moderate adhesion, too large to complete the transfer process, too Small ribbons are easy to deink, and the adhesion of the ribbon is too poor after transfer. In the process of ribbon preparation and thermal transfer printing, the ink is in a molten state, and the adhesion of the ink mainly depends on the resin in it. Therefore, the resin in the transfer printing ink must take into account moderate adhesion and high toughness. , In order to ensu...

Examples

Embodiment 1

[0017] Soft monomer: 60 parts by mass of n-butyl methacrylate, 10 parts by mass of n-butyl acrylate;

[0018] Hard monomer: 30 parts by mass of methyl methacrylate;

[0019] The initiator adopts benzoyl peroxide, and the consumption is 1.75 parts by mass;

[0020] The molecular weight regulator adopts dodecyl mercaptan, and the consumption is 0.15 parts by mass;

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

[0022] After testing, the glass transition temperature of the obtained polymer:acrylic resin was 30°C, the weight average molecular weight was 210,000, and the four-cup viscosity at 25°C was 140 seconds.

Embodiment 2

[0024] Soft monomer: 65 parts by mass of methyl acrylate;

[0025] Hard monomer: 10 parts by mass of styrene, 25 parts by mass of methyl methacrylate;

[0026] The initiator is a compound formed by lauroyl peroxide and peroxycarbonate at a mass ratio of 4:1, and the total dosage is 0.13 parts by mass;

[0027] The molecular weight regulator is a compound formed by dodecyl mercaptan and α-methylstyrene at a mass ratio of 5:1, and the total dosage is 0.3 parts by mass;

[0028] The copolymerization reaction is carried out by bulk polymerization process.

[0029] After testing, the glass transition temperature of the obtained polymer: acrylic resin was 35°C, the weight average molecular weight was 180,000, and the four-cup viscosity at 25°C was 130 seconds.

Embodiment 3

[0031] Soft monomer: 80 parts by mass of n-butyl methacrylate;

[0032] Hard monomer: 20 parts by mass of methyl methacrylate;

[0033] The initiator adopts azobisisobutyronitrile, and the consumption is 0.8 parts by mass;

[0034] The molecular weight regulator adopts isobutyl mercaptan, and the consumption is 0.2 parts by mass;

[0035] Using a mixed solvent of xylene and ethyl acetate at a volume ratio of 3:1 as a polymerization solvent, so that the solid content of the reaction system is 45%;

[0036] The copolymerization reaction is carried out by solution polymerization process.

[0037] After testing, the glass transition temperature of the obtained polymer:acrylic resin was 34°C, the weight average molecular weight was 230,000, and the four-cup viscosity at 25°C was 190 seconds.

technical field

[0001] The invention relates to an acrylic resin for transfer printing ink, which belongs to the technical field of polymer materials. Background technique

[0002] Transfer ink refers to the ink printed on special paper that can be transferred to other substrates due to heating. Since the transfer printing ink is attached to the base tape first, and then the required part of the ink layer is transferred to the surface of the object to be printed by heat during use. Therefore, the transfer printing ink needs to have moderate adhesion, too large to complete the transfer process, too Small ribbons are easy to deink, and the adhesion of the ribbon is too poor after transfer. In the process of ribbon preparation and thermal transfer printing, the ink is in a molten state, and the adhesion of the ink mainly depends on the resin in it. Therefore, the resin in the transfer printing ink must take into account moderate adhesion and high toughness. , In order to ensu...

Examples

Embodiment 1

[0017] Soft monomer: 60 parts by mass of n-butyl methacrylate, 10 parts by mass of n-butyl acrylate;

[0018] Hard monomer: 30 parts by mass of methyl methacrylate;

[0019] The initiator adopts benzoyl peroxide, and the consumption is 1.75 parts by mass;

[0020] The molecular weight regulator adopts dodecyl mercaptan, and the consumption is 0.15 parts by mass;

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

[0022] After testing, the glass transition temperature of the obtained polymer:acrylic resin was 30°C, the weight average molecular weight was 210,000, and the four-cup viscosity at 25°C was 140 seconds.

Embodiment 2

[0024] Soft monomer: 65 parts by mass of methyl acrylate;

[0025] Hard monomer: 10 parts by mass of styrene, 25 parts by mass of methyl methacrylate;

[0026] The initiator is a compound formed by lauroyl peroxide and peroxycarbonate at a mass ratio of 4:1, and the total dosage is 0.13 parts by mass;

[0027] The molecular weight regulator is a compound formed by dodecyl mercaptan and α-methylstyrene at a mass ratio of 5:1, and the total dosage is 0.3 parts by mass;

[0028] The copolymerization reaction is carried out by bulk polymerization process.

[0029] After testing, the glass transition temperature of the obtained polymer: acrylic resin was 35°C, the weight average molecular weight was 180,000, and the four-cup viscosity at 25°C was 130 seconds.

Embodiment 3

[0031] Soft monomer: 80 parts by mass of n-butyl methacrylate;

[0032] Hard monomer: 20 parts by mass of methyl methacrylate;

[0033] The initiator adopts azobisisobutyronitrile, and the consumption is 0.8 parts by mass;

[0034] The molecular weight regulator adopts isobutyl mercaptan, and the consumption is 0.2 parts by mass;

[0035] Using a mixed solvent of xylene and ethyl acetate at a volume ratio of 3:1 as a polymerization solvent, so that the solid content of the reaction system is 45%;

[0036] The copolymerization reaction is carried out by solution polymerization process.

[0037] After testing, the glass transition temperature of the obtained polymer:acrylic resin was 34°C, the weight average molecular weight was 230,000, and the four-cup viscosity at 25°C was 190 seconds.