High temperature resistant water washing polyamide hot-melt adhesive for clothes and preparation method thereof

A technology of polyamide hot-melt adhesive and water-washing polyamide, which is used in adhesives and other directions to achieve the effects of excellent high-temperature water-washing resistance, fast curing and narrow molecular weight range.

Active Publication Date: 2008-11-19
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the specificity of polyamide hot melt adhesive is very strong. As a hot m...

Method used

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  • High temperature resistant water washing polyamide hot-melt adhesive for clothes and preparation method thereof
  • High temperature resistant water washing polyamide hot-melt adhesive for clothes and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In the autoclave with stirrer, inlet pipe, exhaust pipe, temperature and pressure testing device, add glutaric acid (39.6g), 2-methyladipic acid (48.0g), sebacic acid (101.0g) successively g), 2-octanoic acid (8.64g), 2,3-dimethylbutanediamine (34.8g), 2-ethyl-1,6-hexanediamine (57.6g), 3,4,5-tri Methyl-1,9-nonanediamine (64.0 g), caprolactam (22.6 g), ω-aminoundecalactic acid (36.6 g), 1-phenyl-3-pyrazolidinone (1.42 g), water (5.0g), replaced with nitrogen and evacuated to remove the air in the kettle as much as possible, then added nitrogen again to make the internal pressure reach 0.5Mpa, raised the temperature to 200°C, and controlled the pressure to 1.0Mpa, kept the reaction for 2.0 hours, and cooled to 160 ℃, reduce the pressure to 0.10Mpa and dehydrate for 1.0 hour, then add nitrogen and discharge under its protection to obtain polyamide hot melt adhesive.

[0031] Its average molecular weight is determined to be 18100 by gel chromatography, which is tested acc...

Embodiment 2

[0033] In the autoclave with stirrer, inlet pipe, exhaust pipe, temperature and pressure testing device, add successively adipic acid (29.2g), suberic acid (52.2g), azelaic acid (47g), 1, 2-Dimethyladipic acid (52.2g), 1-nonanoic acid (7.9g), 2,3-diethyl-1,4-butanediamine (28.8g), 3-isobutyl-1, 4-Butanediamine (43.2g), 2,3-Dimethyl-1,10-decanediamine (60g), 3-isopropyl-1,12-dodecyldiamine (50.8g), caprolactam (11.3g), 8-capryllactam (14.1g), 1-phenyl-3-pyrazolidinone (1.2g), water (8.0g), replace with nitrogen and evacuate, remove the air in the kettle as much as possible exhausted, and then add nitrogen again to make the internal pressure reach 0.6Mpa, raise the temperature to 210°C, and control the pressure to 1.4Mpa, keep the temperature for 2.0 hours, cool down to 170°C, depressurize to 0.091Mpa and dehydrate for 1.0 hour, then add nitrogen and Discharge under protection to obtain a polyamide hot-melt adhesive with a melting point of 125-132°C.

[0034] Using the detecti...

Embodiment 3

[0036] Add glutaric acid (13.2g), 2-methyladipic acid (32g), 1,2-dimethyl Adipic acid (34.8g), sebacic acid (40.4g), dodecanedioic acid (69g), 1-decanoic acid (10.3g), 2,3-dimethylbutylene diamine (11.6g), 2-Ethyl-1,6-hexanediamine (28.8g), 3,4,5-trimethyl-1,9-nonanediamine (40g), 2,3-dimethyl-1,10-decane Diamine (50g), 3-isopropyl-1,12-dodecyldiamine (60.5g), 8-capryllactam (28.2g), omega-aminoundecalactic acid (36.6g), lauryl Lactam (39.4g), water (6.0g), replaced with nitrogen and evacuated to remove the air in the kettle as much as possible, then add nitrogen again to make the internal pressure reach 0.6Mpa, raise the temperature to 230°C, and control the pressure to 1.8Mpa , heat preservation reaction for 2.5 hours, lower the temperature to 180°C, depressurize to 0.05Mpa and dehydrate for 2 hours, then add nitrogen and discharge under its protection to obtain a polyamide hot melt adhesive with a melting point of 142-150°C.

[0037]Using the detection method of Example 1...

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Abstract

The invention provides a high temperature resistant water washing daiamid hot melt adhesive used for clothes and a method for preparing the same. The preparing method comprises the following steps that: aliphatic dicarboxylic acid with 5 to 12 carbon atoms, aliphatic monocarboxylic acid with 5 to 12 carbon atoms, aliphatic diamine with 6 to 15 carbon atoms, lactam with 6 to 12 carbon atoms, water and a stabilizing agent react and are dehydrated to discharge so that the daiamid hot melt adhesive is obtained. The daiamid hot melt adhesive used for the clothes has the characteristics of small range of molecular weight, rapid solidification and excellent high temperature resistant water washing performance, etc. Chain diamine with more than one carbon atom is selected as the formula of the hot melt adhesive, thereby greatly improving the water resisting property and solvent resisting property; the loss rate of the peeling strength of the product which is washed by water containing soda at a temperature more than 80 DEG C is less than 20 percent and the loss rate of the peeling strength of the product which is dry-cleaned by tetracarp is less than 10 percent.

Description

technical field [0001] The invention relates to a hot-melt adhesive and a preparation method thereof, in particular to a high-temperature washing-resistant polyamide hot-melt adhesive and a preparation method thereof. technical background [0002] Polyamide hot melt adhesive has outstanding advantages such as narrow melting range, fast curing speed and high bonding strength. In the actual application process, after the hot melt adhesive is heated, melted and coated, it can be solidified quickly after a little cooling, and it still maintains good bond strength near the softening point. , carboxyl and other polar groups, so that it has good adhesion to many polar materials. Therefore, polyamide hot-melt adhesives are widely used in many industries such as chemical industry, automobile, light industry, food, textile, etc., and a number of patents have been proposed at home and abroad, aiming to strengthen its characteristics in a certain aspect: [0003] U.S. Patent US3987678...

Claims

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Application Information

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IPC IPC(8): C09J177/06C08G69/28C08G69/14
Inventor 曾作祥李哲龙朱万育陶思玉马志艳
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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