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Polyurethane resin prepolymer solution and artificial leather fog washing bright finishing agent prepared by using same

A technology of polyurethane resin and prepolymer, which is used in the field of polyurethane resin finishing agent and fog washing and brightening polyurethane resin finishing agent

Active Publication Date: 2011-09-28
HUAIAN KAIYUE TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is aimed at the problem that existing market product exists, provides a kind of polyurethane resin prepolymer solution and the artificial leather mist washing bright finishing agent of preparation thereof, by Polymerization reaction of diisocyanate with polyester polyol and special hydroxyl-terminated fluoropolysiloxane to synthesize a new type of fluoropolysiloxane-modified polyurethane resin, and then use the resin solution as the base material to add poly Tetrafluoroethylene wax powder, white carbon black, and auxiliary materials are used to prepare a polyurethane coating agent, which has a matte simulation effect on the surface of the polyurethane artificial leather. After the polyurethane artificial leather is further washed and dried, it will produce a style that is different from the existing market products. Polyurethane artificial leather with obvious surface natural imitation soft and bright effect, characterized by natural and soft reflective film, wear resistance, good water repellency and temperature resistance, and full cotton wax feeling when touched by fingers

Method used

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  • Polyurethane resin prepolymer solution and artificial leather fog washing bright finishing agent prepared by using same

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Preparation of hydroxyl terminated fluoropolysiloxane intermediates.

[0026] In parts by mass, add 20 parts of small molecule hydroxyl silicone oil with 8% hydroxyl content and viscosity of 30mpa.s, 30 parts of octamethylcyclotetrasiloxane (D4), methyldodecylcyclotetrasiloxane 25 parts, 25 parts of methyl trifluoropropyl cyclotrisiloxane (D3F), 3 parts of dry sulfated clay (activated clay), and then start electric stirring (100 ~ 500 rev / min), heating to 80 ~ 120°C, maintain this temperature range, after stirring for 12 hours, the reactant is at 0.01 ~ Under the vacuum of 0.03Mpa, use a sand core funnel or filter cloth to filter while hot to remove sulfated clay, and then filter the reactant at 150 ~ 160°C, 0.01 ~ Pull it down for 2 hours under a vacuum of 0.03Mpa to obtain a colorless and transparent hydroxyl-terminated fluoropolysiloxane intermediate with a viscosity of 1050mpa.s and a hydroxyl mass content of 1.5%. The yield is 91%, and the low boiling point can ...

Embodiment 2

[0029] In parts by mass, add 20 parts of small molecule hydroxyl silicone oil with a hydroxyl content of 5% and a viscosity of 40mpa.s, 30 parts of octamethylcyclotetrasiloxane (D4), methyl a-methyl styryl ring 25 parts of tetrasiloxane, 25 parts of methyl trifluoropropyl cyclotrisiloxane (D3F), 8 parts of dry strongly acidic spherical granular polystyrene resin, and then start electric stirring (100 ~ 500 rev / min), heating to 60 ~ 80°C, maintain this temperature range, after stirring the reaction for 20h, the reactant is heated with 100 ~ 200 mesh screens were filtered while hot to remove the spherical granular polystyrene resin, and then the filtered reactant was heated at 150 ~ 160°C, 0.01 ~ Pull it down for 2 hours under a vacuum of 0.03Mpa to obtain a colorless and transparent hydroxyl-terminated fluoropolysiloxane intermediate with a viscosity of 2100mpa.s and a hydroxyl mass content of 1%. The yield is 90%, and the low boiling point can be reused. The structural formul...

Embodiment 3

[0032] Preparation of Polyurethane Resin Prepolymer Solution Modified by Fluoropolysiloxane

[0033] In parts by mass, add 5 parts of hydroxyl-terminated fluoropolysiloxane intermediates prepared in Example 1, 20 parts of polycaprolactone polyol PCL-3000, 20 parts of DMF, 20 parts of toluene, 4 parts of acetone in the container , 3 parts of ethylene glycol (EG), 1.5 parts of dibutyltin dilaurate, after electric stirring (150 rpm) at 40°C for 60 minutes, heat to 75-85°C, add 20 parts of TDI at a uniform speed within 150 minutes under reflux condensation After the addition, continue to keep stirring at 75-85°C for 2 hours, and cool down to room temperature to obtain a fluoropolysiloxane-modified polyurethane resin prepolymer solution with a solid content of 45.4% and a system viscosity of 1450mpa.s.

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Abstract

The invention discloses a polyurethane resin prepolymer solution which is prepared from the following raw materials in parts by weight: 5-10 parts of hydroxyl-terminated fluoropolysiloxane, 20-30 parts of toluene diisocynate (TDI), 20-30 parts of polyester polyol, 1-5 parts of ethylene glycol (EG), 20-30 parts of dimethylformamide (DMF), 20-25 parts of toluene, 3-5 parts of acetone and 1-2 parts of organic tin catalyst. The invention also discloses an artificial leather fog washing bright finishing agent prepared by using the polyurethane resin prepolymer solution. The finishing agent is prepared from the following raw materials in parts by weight: 20-60 parts of the fluoropolysiloxane modified polyurethane resin prepolymer solution, 2-10 parts of Teflon wax powder, 2-10 parts of precipitated silica or fumed silica, 10-30 parts of dimethylformamide and 20-30 parts of toluene.

Description

Technical field: [0001] The invention relates to a polyurethane resin coating agent for surface treatment of polyurethane artificial leather, in particular to a polyurethane artificial leather having a matte effect after the surface treatment of the polyurethane artificial leather. Polyurethane resin finishing agent, referred to as fog washing bright polyurethane resin finishing agent. The invention belongs to the field of new chemical materials of fluorine-silicon modified polyurethane. Background technique: [0002] Polyurethane resin is a polymer material developed in modern times, which is widely used in printing, coating, papermaking, leather finishing and other industries. When polyurethane resin solution is used for leather finishing, it has good film-forming performance, strong hiding power, firm bonding, bright and wear-resistant coating, and certain elasticity. In order to increase the softness, temperature resistance, natural simulation, water repellency, corros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/61D06M15/576D06M15/256D06M11/79
Inventor 李桂军张国杰李桂民冯会生
Owner HUAIAN KAIYUE TECH DEV
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