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Preparation method of amino inhibited polyamide hot melt adhesive

A polyamide hot-melt adhesive and amine-based technology, applied in the direction of adhesives, etc., to achieve the effect of high peel strength

Inactive Publication Date: 2014-01-22
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The chain terminators currently used to prepare polyamide hot-melt adhesives are mainly various monobasic acids, such as stearic acid, 5-hexenoic acid in CN1646604A, and caprolactam in monobasic acid 5-hexenoic acid, 270 Under ℃, react for several hours to obtain product measurement relative viscosity, the peel strength about this kind of polyamide hot-melt adhesive in CN1469891A is lower than 25N / m

Method used

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  • Preparation method of amino inhibited polyamide hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 0.85 mol of sebacic acid, 0.87 mol of decane diamine, 0.45 mol of nylon 66 salt, 3.5 mol of caprolactam, 0.039 mol of hexadecylamine, and 1.72 g of phosphoric acid into the numerically controlled autoclave, constant pressure 1.65Mpa, constant pressure temperature 215℃ , After constant pressure reaction for 0.75h, release the pressure, the time to release to normal pressure is 1.1h, then pass N 2 Atmospheric pressure reaction for 0.75h and discharge to obtain product P1.

[0017]

Embodiment 2

[0019] Add 0.85 mol of sebacic acid, 0.952 mol of decane diamine, 0.65 mol of nylon 66 salt, 4.3 mol of undecalactam, 0.098 mol of dodecylamine, 3.44 g of tungstomolybdic acid, and constant pressure of 1.7Mpa into the numerically controlled autoclave. Constant pressure temperature 220℃, constant pressure reaction for 0.9h, then release pressure, release to normal pressure for 1.2h, then pass N 2 Atmospheric reaction for 0.8h and discharge to obtain product P2.

[0020]

Embodiment 3

[0022] Add 0.85 mol of sebacic acid, 0.89 mol of decanediamine, 0.5 mol of nylon 66 salt, 3.7 mol of caprolactam, 0.05 mol of octadecylamine, 1.94 g of hydrochloric acid, constant pressure 1.6Mpa, constant pressure temperature 200°C into the numerically controlled autoclave , After the constant pressure reaction for 0.5h, release the pressure, the time to release to normal pressure is 1.0h, then pass N 2 Atmospheric reaction for 0.5h and discharge to obtain product P3.

[0023]

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Abstract

The invention discloses a preparation method of an amino inhibited polyamide hot melt adhesive. The method is characterized by taking a monoamine as a chain terminator, and preparing copolyamide hot melt adhesive from a diacid, a diamine, a nylon salt and lactam. The obtained product has the characteristics of low viscosity, easy coating, and high bonding strength.

Description

technical field [0001] The invention relates to a preparation method of a copolyamide hot-melt adhesive with monoamine as a chain terminator. The polyamide adhesive has the characteristics of low viscosity, easy coating and high bonding strength. Background technique [0002] The chain terminators currently used to prepare polyamide hot-melt adhesives are mainly various monobasic acids, such as stearic acid, 5-hexenoic acid in CN1646604A, and caprolactam in monobasic acid 5-hexenoic acid, 270 Reaction at ℃ for several hours to obtain the measured relative viscosity of the product, the peel strength of this polyamide hot-melt adhesive in CN1469891A is lower than 25N / m. [0003] Monoamines can also be used as chain terminators to prepare polyamide hot-melt adhesives. The present invention has done relevant research on this characteristic. The present invention uses one of dodecylamine, hexadecylamine, and octadecylamine as a polymerization inhibitor , synthesized copolyamide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J177/00C08G69/36
Inventor 薛为岚周义行李哲龙朱万育曾作祥吴芳群沈艳
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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