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Modified polyurethane hot melt adhesive using plants as raw materials and production process thereof

A polyurethane hot-melt adhesive and plant raw material technology, applied in polyurea/polyurethane adhesives, adhesives, starch-derived adhesives, etc., can solve the problems of high cost of polyurethane, waste of leftovers, environmental pollution, etc., and achieve price reduction , avoid environmental pollution, cost reduction effect

Active Publication Date: 2011-08-17
江苏和和新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide plant raw material modified polyurethane hot melt adhesive and its production process, which can effectively solve the environmental pollution caused by the high cost of existing polyurethane and the use of "chemical sheets", as well as the waste and pollution of leftovers of downstream application manufacturers

Method used

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  • Modified polyurethane hot melt adhesive using plants as raw materials and production process thereof
  • Modified polyurethane hot melt adhesive using plants as raw materials and production process thereof
  • Modified polyurethane hot melt adhesive using plants as raw materials and production process thereof

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Embodiment 1

[0029] Example 1: plant raw material modified polyurethane hot melt adhesive, including the following components: composite modified starch 35%, vegetable tackifying resin 13%, toughening agent 2%, compatibilizer 10%, ultraviolet light stabilizer 2 %, polyurethane 35%, coupling agent 0.5%, antioxidant 1.5%, smooth agent 1%, and described polyurethane is polyester polyurethane.

[0030] refer to figure 1 It is the route map of the plant raw material modified polyurethane hot melt adhesive production process of the present invention, and the plant raw material modified polyurethane hot melt adhesive production process comprises the following steps:

[0031] A. Activation of compound modified starch: Wheat modified starch and corn modified starch are mixed in a ratio of 3:1, and then additives are added for high-speed mixing and activation; the modification method is to use difunctional or multifunctional reagents to make the starch larger. Molecules form cross-links;

[0032] ...

Embodiment 2

[0040] Embodiment 2: plant raw material modified polyurethane hot melt adhesive, including the following components, the mass percentage of each component is: plant-based tackifying resin 10%, toughening agent 3%, compatibilizer 7%, ultraviolet light stabilizer 0.6% %, 40% polyurethane, 0.5% coupling agent, 2% antioxidant, 0.5% slip agent, the others are composite modified starch, and the polyurethane is polyester polyurethane.

[0041] refer to figure 1 It is the route map of the plant raw material modified polyurethane hot melt adhesive production process of the present invention, and the plant raw material modified polyurethane hot melt adhesive production process comprises the following steps:

[0042] A. Activation of compound modified starch: Wheat modified starch and corn modified starch are mixed in a ratio of 3:1, and then additives are added for high-speed mixing and activation; the modification method is to use difunctional or multifunctional reagents to make the st...

Embodiment 3

[0051] Embodiment 3: The plant raw material modified polyurethane hot melt adhesive comprises the following components, and the mass percentage of each component is: 30% of plant-based tackifying resin, 10% of toughening agent, 15% of compatibilizer, and 2.6% of ultraviolet light stabilizer %, 21% polyurethane, 0.5% coupling agent, 1.5% antioxidant, 0.5% slip agent, the others are composite modified starch, and the polyurethane is polyester polyurethane.

[0052] refer to figure 1 It is the route map of the plant raw material modified polyurethane hot melt adhesive production process of the present invention, and the plant raw material modified polyurethane hot melt adhesive production process comprises the following steps:

[0053] A. Activation of compound modified starch: Wheat modified starch and corn modified starch are mixed in a ratio of 3:1, and then additives are added for high-speed mixing and activation; the modification method is to use difunctional or multifunctio...

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Abstract

The invention relates to a hot melt adhesive, in particular to a modified polyurethane hot melt adhesive using plants as raw materials and a production process thereof. The modified polyurethane hot melt adhesive comprises the following components in percentage by mass: 20 to 50 percent of composite modified starch, 10 to 30 percent of vegetal tackifying resin, 2 to 10 percent of toughening agent, 5 to 20 percent of compatibilizer, 0.5 to 3 percent of ultraviolet stabilizer, 20 to 40 percent of polyurethane, and 0 to 3 percent of one or a composition of a coupling agent, an antioxidant and a slipping agent. The production process mainly comprises the following steps of: A, activating the composite modified starch; B, preparing a hot melt adhesive master batch; C, mixing and melting the hot melt adhesive master batch by an extrusion machine; and D, forming and packaging the hot melt adhesive. The production process is environmental-friendly and has no pollution to the natural environment.

Description

technical field [0001] The invention relates to a hot melt adhesive, in particular to a plant raw material modified polyurethane hot melt adhesive and a production process thereof. Background technique [0002] Hot-melt adhesive products are popular in the market for their characteristics of fast bonding, high efficiency, environmental protection, and easy storage and transportation, and have become the fastest-growing variety of adhesives, and their application range is also expanding. Among them, because the molecular structure of polyurethane contains -NCO polar groups, it has strong affinity for various materials, and the molecules can form H bonds, which have good initial adhesion and high cohesion, and wear resistance. , cold resistance, softness (toughness) are very good, it has the resistance to grease and plasticizer that is difficult to compare with general hot melt adhesives, so it has high elasticity, high hardness, easy low temperature lamination, grease resista...

Claims

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Application Information

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IPC IPC(8): C09J175/06C09J103/04C09J193/04C09J169/00C09J123/08C09J123/06
Inventor 赵庆芳韩岳红蔡玉丽徐晨晨吴中道陈佳磊
Owner 江苏和和新材料股份有限公司
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