Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of hot melt adhesive with pressure sensitivity and preparation method thereof

A hot-melt adhesive, pressure-sensitive technology, applied in the direction of adhesives, etc., to achieve the effect of high substrate adhesion, high temperature melt viscosity, and high flexibility

Active Publication Date: 2017-02-22
YANTAI DARBOND TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hot-melt pressure-sensitive adhesives generally use SBS, SIS, polyisobutylene and other rubber or polyacrylate resin as the main resin. At present, there is no public report about the pressure-sensitive adhesive with polyamide as the main resin.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of hot melt adhesive with pressure sensitivity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 145.70g C 16 Unsaturated aliphatic dimer acid, 5.10g sebacic acid, 23.20g polyetheramine D-230, 58.00g polyetheramine D-2000, 2.20gC 12 Aliphatic monoacid, 0.20g hypophosphorous acid, and 10.40g 2-methylpentamethylenediamine are put into the constant pressure dropping funnel, feed nitrogen gas and stir to start heating, within 60 minutes, the temperature is raised to 120°C, and At this temperature, 2-methylpentamethylenediamine is slowly added dropwise, and the dropwise addition is completed within 60 minutes. At this time, the temperature rises to 130 ° C, and salt is formed at this temperature for 2 hours, and then the temperature is raised slowly. Water was evaporated, and the temperature rose to 240°C within 3 hours, kept at this temperature for 5 hours, then evacuated with a vacuum pump for 3 hours to a pressure of 200Pa, and finally discharged under the protection of nitrogen to obtain a light yellow rubber strip.

Embodiment 2

[0017] Add 113.60gC 18 Unsaturated aliphatic dimer acid, 23.10g suberic acid, 35.40g polyetheramine D-230, 1.00gC 16 Aliphatic monoacid, 0.20g of phosphoric acid, and 11.20g of 2-methylpentamethylenediamine were put into the constant pressure dropping funnel, fed with nitrogen and stirred to start heating, and the temperature was raised to 120°C within 60 minutes, and then The temperature starts to slowly add 2-methylpentamethylenediamine dropwise, and the dropwise addition is completed within 60 minutes. At this time, the temperature rises to 130°C, and salt is formed at this temperature for 2 hours, and then the temperature rises slowly. During this process, there will be water After steaming, the temperature rose to 240°C within 3 hours, kept at this temperature for 5 hours, then evacuated with a vacuum pump for 3 hours to a pressure of 200Pa, and finally discharged under nitrogen protection to obtain a light yellow rubber strip.

Embodiment 3

[0019] Add 165.10gC 20 Unsaturated aliphatic dimer acid, 1.20g azelaic acid, 78.40g polyetheramine D-2000, 1.40gC 20 Aliphatic monoacid, 0.50g of phosphorous acid, and 20.60g of 2-methylpentamethylenediamine were put into the constant pressure dropping funnel, fed with nitrogen and stirred to start heating, and the temperature was raised to 120°C within 60 minutes, and At this temperature, 2-methylpentamethylenediamine is slowly added dropwise, and the dropwise addition is completed within 60 minutes. At this time, the temperature rises to 130 ° C, and salt is formed at this temperature for 2 hours, and then the temperature is raised slowly. During this process, there will be The water was evaporated, and the temperature rose to 240°C within 3 hours, kept at this temperature for 5 hours, then evacuated with a vacuum pump for 3 hours to a pressure of 200Pa, and finally discharged under the protection of nitrogen to obtain a light yellow rubber strip.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a hot melt adhesive with compression sensitivity. The high-temperature melt viscosity at the temperature of 150 DEG C is 1500-15000mPa.s, the Shore hardness is 10-40, the tensile strength is 0.1-1MPa, and the elongation at break is more than 1000 percent. The hot melt adhesive is characterized by comprising the following components in percentage by mole through condensation polymerization: 30-45 percent of dimer acids, 5-20 percent of aliphatic dicarboxylic acids, 20-30 percent of aliphatic diamine, 15-25 percent of polyether amine, 0.01-0.06 percent of an end-capping reagent and 0.01-0.1 percent of an acid catalyst, wherein the mole number of the aliphatic dicarboxylic acids is less than or equal to 40 percent of the mole number of the dimer acids. The hot melt adhesive disclosed by the invention has the beneficial effects that the hot melt adhesive with compression sensitivity has high high-temperature melt viscosity, high toughness and high base material adhesion force and is applied to pressure sensitive adhesive tapes and glue in the manufacturing industry.

Description

technical field [0001] The invention relates to a hot-melt adhesive and a preparation method thereof, in particular to a pressure-sensitive polyamide hot-melt adhesive and a preparation method thereof, belonging to the field of adhesives. Background technique [0002] Polyamide hot melt adhesive is generally formed by polycondensation of dimer acid, aliphatic dibasic acid and diamine or polyamine. It has narrow melting point range, high softening point, non-toxic, good oil and chemical resistance, and excellent wear resistance. High bonding strength to polar materials and good low temperature flexibility. Dimer acid type PA hot melt adhesive has high added value. In recent years, the market demand has been increasing. It has a wide range of applications in printing and packaging, clothing, shoemaking, automobile industry, electronic packaging, heat shrinkable materials and machinery. Applications. Representative patents of dimer acid polyamide hot melt adhesives include CN...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J177/06C08G69/40
Inventor 崔亨利王建斌陈田安解海华
Owner YANTAI DARBOND TECH