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Preparation method of polyurethane modified acrylic resin for reflecting material

A polyurethane modification, acrylic resin technology, applied in the direction of polyurea/polyurethane adhesives, adhesive types, adhesives, etc. Capacitance, improve the effect of the market

Active Publication Date: 2015-07-15
南京夜视丽精细化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of poor high-temperature water washing and dry-cleaning performance of the existing reflective materials, the present invention provides a method for preparing a polyurethane-modified acrylic resin for reflective materials. This resin can form a film on the cloth base and bond glass Micro-beads, so that the reflective material made has retro-reflective function under light irradiation, and has good high temperature (95°C) washing resistance, dry cleaning resistance, sweat resistance and soft hand feeling.

Method used

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  • Preparation method of polyurethane modified acrylic resin for reflecting material
  • Preparation method of polyurethane modified acrylic resin for reflecting material
  • Preparation method of polyurethane modified acrylic resin for reflecting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Preparation of active acrylate polymer

[0059] Based on the total weight of comonomers, weigh 2% mercaptoethanol, 1% hydroxyethyl acrylate, 35.2% butyl acrylate, 39.8% isooctyl acrylate, 10% methyl methacrylate, and 10.1% ethyl acrylate , 1.9% methyl acrylate, 0.4% azobisisobutyronitrile, 100% ethyl acetate, add the monomer mixture and 2 / 3 solvent into the reaction kettle, start the stirring and start to quickly heat up to reflux, reflux for 1h, and then drop Add the initiator solution consisting of the initiator and the remaining 1 / 3 of the solvent, and drop it evenly within 3 hours, then keep it warm for 3 hours, cool to about 30°C and filter out the material, with a solid content of 50%.

[0060] (2) Preparation of isocyanate-terminated prepolymer

[0061] Weigh polyester polyol (hydroxyl value 47mgKOH / g, acid value 0.4mgKOH / g) 90.2%, toluene diisocyanate 9.8%, organic solvent 100%, R (molar ratio of isocyanate group to hydroxyl group) = 1.5, Add polyester pol...

Embodiment 2

[0066] (1) Preparation of active acrylate polymer: based on the total weight of comonomers, weigh 75% of isooctyl acrylate, 11% of methyl methacrylate, 1% of 3-mercapto-1-propanol, hydroxyacrylate 2% of propyl ester, 10.1% of butyl methacrylate, 0.9% of methyl acrylate, 0.5% of azobisisobutyronitrile, 70% of ethyl acetate, 10% of toluene, the process condition of polymerization is carried out by embodiment 1, solid The content is 55%.

[0067] (2) Preparation of isocyanate-terminated prepolymer

[0068] Weigh polyester polyol (hydroxyl value 44mgKOH / g, acid value 0.4mgKOH / g) 90.2%, toluene diisocyanate 9.8%, organic solvent 120%, R (molar ratio of isocyanate group to hydroxyl group) = 1.6, Add polyester polyol and 20% organic solvent into the reaction kettle, start stirring, heat up for dehydration, stop heating when the dehydration temperature reaches 140°C, about 12% of the organic solvent will come out, cool down to 65°C, add toluene diisocyanate, and control the temperatu...

Embodiment 3

[0073] (1) Preparation of active acrylate polymer: Based on the total weight of comonomers, weigh 43% of isooctyl acrylate, 30% of tridecyl acrylate, 11% of isobornyl methacrylate, 3-mercapto -2-butanol 1%, hydroxypropyl acrylate 2%, lauryl acrylate 11.1%, methyl acrylate 1.9%, azobisisobutyronitrile 0.5%, ethyl acetate 70%, toluene 10%, polymerization process Condition is carried out by embodiment 1, and solid content is 55%.

[0074] (2) Preparation of isocyanate-terminated prepolymer

[0075] Weigh polyester polyol (hydroxyl value 47mgKOH / g, acid value 0.4mgKOH / g) 90.2%, toluene diisocyanate 9.8%, organic solvent 120%, R (molar ratio of isocyanate group to hydroxyl group) = 1.5, Add polyester polyol and 20% organic solvent into the reaction kettle, start stirring, heat up for dehydration, stop heating when the dehydration temperature reaches 140°C, about 12% of the organic solvent will come out, cool down to 65°C, add toluene diisocyanate, and control the temperature at 75...

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Abstract

The invention provides a preparation method of polyurethane modified acrylic resin for a reflecting material. The preparation method comprises the following steps of: firstly, preparing active polyacrylate polymer; then, preparing terminated isocyanate prepolymer; and finally, preparing the polyurethane modified acrylic resin by reacting the ctive polyacrylate polymer with the terminated isocyanate prepolymer. The obtained resin not only can be used for forming a film on cloth base, but also can be used for bonding glass beads, so that the prepared reflecting material has a back-reflecting function under illumination, and has better performances including high-temperature (95 DEG C) washing resistance, dry washing resistance, sweat stain resistance, a soft hand feeling and the like.

Description

technical field [0001] The invention relates to a method for preparing a coating resin used on reflective materials, in particular to a method for preparing polyurethane-modified acrylic resin for reflective materials. Background of the invention [0002] At present, reflective materials have been widely used in special industries and fields, such as special clothing, firefighting clothing, mining clothing, navigation clothing and other iconic life-saving organisms. A variety of reflective materials are known, and their application fields continue to expand, and people's performance requirements are also constantly improving, especially for high-strength reflective performance, high temperature (95°C) washing performance and dry cleaning resistance of reflective fabrics. Requirements such as performance, as well as requirements for resistance to perspiration and softness. [0003] The patent CN1746251A of Beijing Gaomeng Chemical Co., Ltd. discloses a special adhesive for r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/62C08G18/42C08G18/10C08F220/18C08F220/28C08F220/14C09J175/06
Inventor 牛正发曹刚杨华新冯升东
Owner 南京夜视丽精细化工有限责任公司
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