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Solvent-based polyurethane hot-melt adhesive material, preparation method and application method thereof

A polyurethane hot-melt adhesive, solvent-based technology, used in polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve the problems of poor transportation stability, high bonding strength, environmental hazards, etc. Strong, high solid content, fast crystallization rate

Active Publication Date: 2021-10-15
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent CN201710301603.9 discloses a solvent-based two-component polyurethane hot melt adhesive that can be coated. It consists of a hydroxyl-containing component A and an isocyanate-containing component B. Composed of polyurethane prepolymer and multi-resin mixture, component B containing isocyanate is a linear prepolymer with isocyanate at both ends, suitable for compounding of low softening point film materials, and has high bonding strength; but it adopts double Components need to be formulated during use, and solution polymerization is adopted, and the volatilization of organic solvents during the preparation process will cause harm to the environment
Patent CN201510265339.9 discloses a solvent-type hydrolysis-resistant cold-resistant melting point low-crystallization fast polyurethane hot-melt adhesive manufacturing method, which uses polybutylene adipate and toluene diisocyanate to react to form a prepolymer, and then sequentially adds a chain extender , dimethyl and amide, diphenylmethane diisocyanate and solvent ethyl acetate, the prepared product has the advantages of good cold resistance and hydrolysis resistance, low melting point, fast crystallization, high initial adhesion; but it also uses solution polymerization, and The transport stability of the product is poor

Method used

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  • Solvent-based polyurethane hot-melt adhesive material, preparation method and application method thereof
  • Solvent-based polyurethane hot-melt adhesive material, preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] With a mass part, 79.33 parts of polycaparidate glycol (PEA, M = 2000), 0.4 parts of S3207, 0.4 parts B333, 0.04 parts of the tin catalyst T-9, and the reactor tin catalyst T-9 was added. The maintenance temperature was 95 ° C; 16.96 parts of MDI-100 were added to the reaction kettle B, and the temperature was 75 ° C; 1.72 parts of 1,4-butanediol, 1.15 parts of 1,6-hexanediol were added to the reactor C, The maintenance temperature is 60 ° C; the isocyanate index is controlled at 1.01. The temperature of each reactor is stable, by mixing the reactor A, the reactor B and the raw material components in the reaction kettle A, the reaction kettle B and the reactor c, injects the twin screw extruder, mixed materials The double-screw in vivo is uniformly reactive, and after plasticizing, it is squeezed into an elliptical particles having a uniform particle size, i.e., a solvent-type polyurethane hot melt adhesive material.

Embodiment 2

[0028] With mass parts, 85.74 parts of polyciparate butnesate diol (PBA, M = 3000), 0.5 parts of B310, 0.03 parts of the tin catalyst T-9 were added to the reaction kettle A, and the temperature was 100%. EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc EtOAc (EtOAc) ° C; isocyanate index is controlled at 0.99. The temperature of each reactor is stable, by mixing the reactor A, the reactor B and the raw material components in the reaction kettle A, the reaction kettle B and the reactor c, injects the twin screw extruder, mixed materials The double-screw in vivo is uniformly reactive, and after plasticizing, it is squeezed into an elliptical particles having a uniform particle size, i.e., a solvent-type polyurethane hot melt adhesive material.

Embodiment 3

[0030] 48.83 parts of polyciparate dikanol (Pba, M = 4000), 42.6 polycaprolactone diol (PCl, M = 2000), 0.6 parts of B333, 0.03 parts of organic Tin catalyst T-9, adding the reaction kettle A, maintaining the temperature of 105 ° C; 7.32 parts of MDI-100 was added to the reaction kettle B, and the temperature was 60 ° C; 0.54 parts of 1,4-butanediol, 0.09 parts 1 The 6-hexidol was added to the reactor C, the temperature was 40 ° C; the isocyanate index was controlled at 1.03. The temperature of each reactor is stable, by mixing the reactor A, the reactor B and the raw material components in the reaction kettle A, the reaction kettle B and the reactor c, injects the twin screw extruder, mixed materials The double-screw in vivo is uniformly reactive, and after plasticizing, it is squeezed into an elliptical particles having a uniform particle size, i.e., a solvent-type polyurethane hot melt adhesive material.

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Abstract

The invention relates to the technical field of polyurethane hot-melt adhesives, in particular to a solvent-type polyurethane hot-melt adhesive material and a preparation method and use method thereof. The solvent-based polyurethane hot-melt adhesive material includes the following raw materials in parts by mass: 79-92 parts of polyester polyol; 7.3-17.4 parts of diisocyanate; 0.6-3.9 parts of chain extender; 0.1-0.8 part of leveling agent ; Catalyst 0.02-0.04 part; Described polyester polyol is polyethylene adipate diol, polybutylene adipate diol, polyhexamethylene adipate diol or polycaprolactone One or a mixture of two or more ester diols. The solvent-type polyurethane hot-melt adhesive material of the present invention has less volatile organic solvent consumption, fast dissolution rate, controllable crystallization rate, strong cohesive force and convenient use; the present invention also provides its preparation method and use method.

Description

Technical field [0001] The present invention relates to the field of polyurethane hot melt glue, and more particularly to a solvent-type polyurethane hot melt adhesive material and a preparation method thereof and a method of use. Background technique [0002] Thermoplastic polyurethane (TPU) hot melt adhesive can be well bonded to many materials due to excellent mechanical properties and wider processing, high adhesive strength, and the most developed in the field of clothing and shoes Fast hot melt adhesive variety. At present, the hot melt adhesive applied in the market is high, and the normal temperature is solid. It is necessary to melt into a flowable liquid in high temperature during use, and the processing temperature is high, resulting in degradation in the processing process. At the same time, some special applications cannot use existing granular or powdery polyurethane hot melt adhesive products, which must be made into liquid, coated on the substrate, and obtain thin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C08G18/66C08G18/42C08G18/32
Inventor 代金辉宋小娜管永刘永成张宁彭程
Owner SHANDONG INOV POLYURETHANE
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