Use of reaction type hindered amine, coating formula and method for in-situ photostabilization of coating layer

Abstract

The present invention relates to the application of reactive hindered amine (gamma-HALS), light cured paint recipe and coating in-situ light stabilizing method. Gamma-HALS (ATMP, MTMP, APMP and MPMP) is used as the light stabilizer of ultraviolet light cured polymer paint system, and the polymer paint has recipe comprising gamma-HALS, oily oligomer, diluent, light initirator and other assistant. The in-situ light stabilizing method of ultraviolet light cured polymer paint system includes the steps of: homogenizing prepolymer, coating, vacuum stoving, ultraviolet light curing, etc. Experiment shows that the ultraviolet light cured polymer coating the paint of the present invention forms has excellent light protection performance.

Description

Technical field

[0001] The invention relates to the application of a reactive hindered amine light stabilizer (r-HALS), the formulation of a light-curing coating and an in-situ light stabilization method of a polymer coating. Background technique

[0002] The ultraviolet curing (UV-curing) technology of polymer coating has been paid great attention to by people once it came out, and the success of this curing process mainly depends on its own advanced nature. Selective chemical transitions from quasi-liquid to solid phases can occur over the range of irradiated wavelengths in solvent-free or high-solids formulations at room temperature. The application field of polymer coating UV curing technology is constantly expanding, used to improve the surface properties of various materials, such as plastics, metals, wood, ceramics, glass, fibers and textiles, etc., especially used in the manufacture of drug release films and biological Application and protection of crafts. And rapi...

Examples

Embodiment 1

[0028] The in-situ light stabilized UV-curable coating system was prepared according to the following formula:

[0029] Component Amount (mass percentage)

[0030] 4-Acryloyloxy-2,2,6,6-tetramethylpiperidinol (ATMP) 2.0

[0031] CN964 86.0

[0032] TPGDA 10.0

[0033] Irgacure651 1.5

[0034] Leveling agent 0.5

[0035] Each component is accurately weighed, and a UV-cured reactive prepolymerized mixture is prepared according to the above-mentioned polymer coating system formulation. The prepolymer must be mixed evenly, and placed in a dark place for overnight homogenization; the aged prepolymer is evenly coated on the PVC sheet with an applicator, the coating thickness is 20μm, and the A-528 thickness gauge is used to (produced by Guilin Measuring Tool Factory, with a sensitivity of 10 -2 mm) to measure the coating thickness of the sample; the PVC sheet coated with the aliphatic urethane acrylate coating is placed on a UV curing machine for photocuring, the light source is...

Embodiment 2

[0038] The in-situ light stabilized UV-curable coating system was prepared according to the following formula:

[0039] Component Amount (mass percentage)

[0040] 4-methacryloyloxy-2,2,6,6-tetramethylpiperidinol ester (MTMP) 2.0

[0041] Actilane 167 86.0

[0042] TPGDA 10.0

[0043] Irgacure651 1.5

[0044] Leveling agent 0.5

[0045] Each component is accurately weighed, and a UV-cured reactive prepolymerized mixture is prepared according to the above-mentioned polymer coating system formulation. The prepolymer must be mixed evenly, and placed in a dark place for overnight homogenization; the aged prepolymer is evenly coated on the PVC sheet with an applicator, the coating thickness is 10μm, and the A-528 thickness gauge is used to (produced by Guilin Measuring Tool Factory, with a sensitivity of 10 -2 mm) to measure the coating thickness of the sample; the PVC sheet coated with the aliphatic urethane acrylate coating is placed on a UV curing machine for photocuring, ...

Embodiment 3

[0048] The in-situ light stabilized UV-curable coating system was prepared according to the following formula:

[0049] Component Amount (mass percentage)

[0050] 4-acryloyloxy-1,2,2,6,6-tetramethylpiperidinol ester (APMP) 1.0

[0051] EBECRYL270 80.0

[0052] TMPTA 16.0

[0053] Darocurl173 2.5

[0054] Leveling agent 0.5

[0055] Each component is accurately weighed, and a UV-cured reactive prepolymerized mixture is prepared according to the above-mentioned polymer coating system formulation. The prepolymer must be mixed evenly, and placed in a dark place overnight for homogenization; the aged prepolymer is evenly coated on the PVC sheet with an applicator, the coating thickness is 15μm, and the A-528 thickness gauge is used to (produced by Guilin Measuring Tool Factory, with a sensitivity of 10 -2 mm) to measure the coating thickness of the sample; the PVC sheet coated with the aliphatic urethane acrylate coating is placed on a UV curing machine for photocuring, the ...

Technical field

[0001] The invention relates to the application of a reactive hindered amine light stabilizer (r-HALS), the formulation of a light-curing coating and an in-situ light stabilization method of a polymer coating. Background technique

[0002] The ultraviolet curing (UV-curing) technology of polymer coating has been paid great attention to by people once it came out, and the success of this curing process mainly depends on its own advanced nature. Selective chemical transitions from quasi-liquid to solid phases can occur over the range of irradiated wavelengths in solvent-free or high-solids formulations at room temperature. The application field of polymer coating UV curing technology is constantly expanding, used to improve the surface properties of various materials, such as plastics, metals, wood, ceramics, glass, fibers and textiles, etc., especially used in the manufacture of drug release films and biological Application and protection of crafts. And rapi...

Examples

Embodiment 1

[0028] The in-situ light stabilized UV-curable coating system was prepared according to the following formula:

[0029] Component Amount (mass percentage)

[0030] 4-Acryloyloxy-2,2,6,6-tetramethylpiperidinol (ATMP) 2.0

[0031] CN964 86.0

[0032] TPGDA 10.0

[0033] Irgacure651 1.5

[0034] Leveling agent 0.5

[0035] Each component is accurately weighed, and a UV-cured reactive prepolymerized mixture is prepared according to the above-mentioned polymer coating system formulation. The prepolymer must be mixed evenly, and placed in a dark place for overnight homogenization; the aged prepolymer is evenly coated on the PVC sheet with an applicator, the coating thickness is 20μm, and the A-528 thickness gauge is used to (produced by Guilin Measuring Tool Factory, with a sensitivity of 10 -2 mm) to measure the coating thickness of the sample; the PVC sheet coated with the aliphatic urethane acrylate coating is placed on a UV curing machine for photocuring, the light source is...

Embodiment 2

[0038] The in-situ light stabilized UV-curable coating system was prepared according to the following formula:

[0039] Component Amount (mass percentage)

[0040] 4-methacryloyloxy-2,2,6,6-tetramethylpiperidinol ester (MTMP) 2.0

[0041] Actilane 167 86.0

[0042] TPGDA 10.0

[0043] Irgacure651 1.5

[0044] Leveling agent 0.5

[0045] Each component is accurately weighed, and a UV-cured reactive prepolymerized mixture is prepared according to the above-mentioned polymer coating system formulation. The prepolymer must be mixed evenly, and placed in a dark place for overnight homogenization; the aged prepolymer is evenly coated on the PVC sheet with an applicator, the coating thickness is 10μm, and the A-528 thickness gauge is used to (produced by Guilin Measuring Tool Factory, with a sensitivity of 10 -2 mm) to measure the coating thickness of the sample; the PVC sheet coated with the aliphatic urethane acrylate coating is placed on a UV curing machine for photocuring, ...

Embodiment 3

[0048] The in-situ light stabilized UV-curable coating system was prepared according to the following formula:

[0049] Component Amount (mass percentage)

[0050] 4-acryloyloxy-1,2,2,6,6-tetramethylpiperidinol ester (APMP) 1.0

[0051] EBECRYL270 80.0

[0052] TMPTA 16.0

[0053] Darocurl173 2.5

[0054] Leveling agent 0.5

[0055] Each component is accurately weighed, and a UV-cured reactive prepolymerized mixture is prepared according to the above-mentioned polymer coating system formulation. The prepolymer must be mixed evenly, and placed in a dark place overnight for homogenization; the aged prepolymer is evenly coated on the PVC sheet with an applicator, the coating thickness is 15μm, and the A-528 thickness gauge is used to (produced by Guilin Measuring Tool Factory, with a sensitivity of 10 -2 mm) to measure the coating thickness of the sample; the PVC sheet coated with the aliphatic urethane acrylate coating is placed on a UV curing machine for photocuring, the ...

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