Synthesis of thiol-modified polyurethane resin

A polyurethane resin modification technology, which is applied in the synthesis field of thiol-modified polyurethane resin, can solve problems such as difficult to meet requirements, low curing energy, and poor surface dryness, and achieve simple synthesis reaction process, low production cost, easily controlled effects

Inactive Publication Date: 2017-06-16
烟台鑫海耐磨胶业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light-curing materials of conventional polyurethane acrylates have their own limitations, and the curing energy is generally 1000mj / cm 2 Above, in the case where low curing energy is required, such as 500mj / cm 2 Or lower curing energy, common urethane acrylate systems are difficult to meet the requirements; in addition, conventional urethane acrylate resins often do not dry well after curing under low-intensity UV lamps; in view of these two problems, the synthesis has a low Curing energy and good surface dry polyurethane acrylate resin is especially necessary

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] 100g of HTPB was vacuumed at 110°C for 2 hours to remove the doped water; then cooled to 50°C, added 29g of HDI, after the temperature was constant, it was raised to 85°C and reacted for 2.5 hours, until the NCO content reached the design value, stop heating , 3.9 g of hydroxypropyl methacrylate, 1.2 g of mercaptoethanol and 2.1 g of 16-mercaptohexadecan-1-ol were added and mixed, and then reacted at 70° C. for 2.5 hours to obtain a mercaptan-modified polyurethane resin.

Embodiment 2

[0009] 100g of HTPB was evacuated at 110°C for 4 hours to remove the doped water; then cooled to 50°C, added 29g of HDI, after the temperature was constant, raised to 85°C and reacted for 3.5 hours, until the NCO content reached the design value, stop heating , 3.9 g of hydroxypropyl methacrylate, 1.2 g of mercaptoethanol and 2.1 g of 16-mercaptohexadecan-1-ol were added and mixed uniformly, and reacted at 70° C. for 3.5 hours to obtain a mercaptan-modified polyurethane resin.

Embodiment 3

[0011] 100g of HTPB was evacuated at 110°C for 3 hours to remove the doped water; then cooled to 50°C, added 29g of HDI, after the temperature was constant, raised to 85°C and reacted for 3 hours, until the NCO content reached the design value, stop heating , 3.9 g of hydroxypropyl methacrylate, 1.2 g of mercaptoethanol and 2.1 g of 16-mercaptohexadecan-1-ol were added and mixed, and then reacted at 70° C. for 3 hours to obtain a mercaptan-modified polyurethane resin.

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Abstract

The present invention relates to synthesis of a thiol-modified polyurethane resin. The synthesis comprises: vacuumizing 100 g of HTPB for 2-4 h at a temperature of 110 DEG C to remove the doped water; cooling to a temperature of 50 DEG C, adding 29 g of HDI, heating to a temperature of 85 DEG C after the constant temperature is achieved, carrying out a reaction for 2.5-3.5 h, stopping the heating until the NCO content achieves a designed value, adding 3.9 g of hydroxypropyl methacrylate, 1.2 g of mercaptoethanol and 2.1 g of 16-mercapto hexadecan-1-ol, and uniformly mixing; and carrying out a reaction for 2.5-3.5 h at a temperature of 70 DEG C to obtain the thiol-modified polyurethane resin.

Description

technical field [0001] The invention relates to the synthesis of a mercaptan-modified polyurethane resin, which belongs to the field of synthetic chemistry. Background technique [0002] Light-curing materials have been widely studied due to their outstanding advantages such as fast curing speed, environmental friendliness, low energy consumption, and no solvent volatilization, and they are rapidly promoted in various industries. However, the light-curing materials of conventional polyurethane acrylates have their own limitations, and the curing energy is generally 1000mj / cm 2 Above, in the case where low curing energy is required, such as 500mj / cm 2 Or lower curing energy, common urethane acrylate systems are difficult to meet the requirements; in addition, conventional urethane acrylate resins often do not dry well after curing under low-intensity UV lamps; in view of these two problems, the synthesis has a low Curing energy and good surface dry polyurethane acrylate res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/65C08G18/69C08G18/38
CPCC08G18/672C08G18/3876C08G18/69
Inventor 阎珊珊
Owner 烟台鑫海耐磨胶业有限公司
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