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Polar monomer graft-modified amorphous poly-alpha-olefin and preparation method thereof

A polar monomer, graft modification technology, applied in the direction of graft polymer adhesives, adhesive types, adhesives, etc., can solve the problems of inconvenient materials, short storage period, etc. Processing fluidity, good fluidity effect

Active Publication Date: 2014-04-30
GUANGZHOU LUSHAN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The polarity of the material can be improved by grafting amorphous polyα-olefins with silane, but because silane is sensitive to moisture, the grafts need to be stored in a moisture-insulated container, and the storage period is short, which affects the use of the material. caused great inconvenience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] After dissolving 30g of maleic anhydride with 30g of acetone, and 3kg of APAO792 (Degussa), 3g of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, 3g of (3) Ethoxylated trimethylolpropane triacrylate and 15g of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester were mixed evenly with a high-speed mixer, and the solvent After volatilization, reaction extrusion is carried out on a twin-screw extruder with a screw length-to-diameter ratio of 40:1. The temperature of each zone of the extruder is 80, 120, 150, 190, 190, 190, 190, 190, and 180 °C. The reaction time of the twin-screw extruder was 0.03h, and the underwater pelletizing equipment was used to obtain light-colored graft particles. After acid-base titration, the graft rate of maleic anhydride was 0.63%. After testing, the storage period is one year.

Embodiment 2

[0033] Add 100kg of APAO703 (Degussa) to the reactor, and after fully melting at 160°C, add maleic anhydride and stir evenly. The added maleic anhydride is 3% of the weight of A-PA-O, and add it dropwise with a liquid feeding device Initiator tert-butyl cumene peroxide, the amount of initiator is 0.5% of the weight of APAO, while dripping auxiliary grafting agent, the addition of auxiliary grafting agent is 5% of the weight of Α-PA-O, assisting grafting The branching agent is a mixture of styrene and diethylene glycol diacrylate in a weight ratio of 3:2, adjust the liquid feeding rate, so that the initiator and auxiliary grafting agent are added dropwise within 2 hours, and then continue to react for 2 hours, and then Add antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, the amount of antioxidant added is 0.5% of the weight of APAO, stir well and then vacuumize Remove unreacted maleic anhydride, obtain the APAO of light yellow maleic anhydride graft aft...

Embodiment 3

[0035] Add 100kg of APAO508 (Degussa) to the reactor, and after fully melting at 190°C, add glycidyl methacrylate and stir evenly, the added glycidyl methacrylate is 6% of the weight of APAO, and use liquid feeding equipment Add dropwise initiator dicumyl acetone peroxide solution (dicumyl peroxide is dissolved in the acetone of equal quality), the amount of initiator is 0.75% of the weight of APAO, drips grafting assistant simultaneously, helps grafting The addition of grafting agent is 2% of the weight of APAO, and auxiliary grafting agent is the polyethylene glycol diacrylate, pentaerythritol tetraacrylate mixture that weight ratio is 9: 1, regulates liquid feeding speed, makes initiator and grafting aid The branching agent was added dropwise in 1.5 hours, and then continued to react for 2 hours, then added antioxidant tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and three (2 , 4-di-tert-butyl) phenyl phosphite (weight ratio is 1:1), the...

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Abstract

The invention discloses a polar monomer graft-modified amorphous poly-alpha-olefin and a preparation method thereof. The polar monomer graft-modified amorphous poly-alpha-olefin is prepared by carrying out grafting reaction on amorphous poly-alpha-olefin, a peroxide initiator, a polar monomer and an auxiliary grafting agent under molten or dissolved conditions. The polar monomer graft-modified amorphous poly-alpha-olefin is prepared from the following raw materials: 100 parts of amorphous poly-alpha-olefin, peroxide initiator accounting for 0.1-1 wt% of the amorphous poly-alpha-olefin, polar monomer accounting for 0.5-10 wt% of the amorphous poly-alpha-olefin, auxiliary grafting agent accounting for 0.1-5 wt% of the amorphous poly-alpha-olefin, solvent accounting for 0-300 wt% of the amorphous poly-alpha-olefin, and antioxidant accounting for 0.05-2 wt% of the amorphous poly-alpha-olefin. The amorphous poly-alpha-olefin has the characteristics of high grafting ratio, light color, high polarity, favorable flowability, favorable storage capability and no risk in moisture crosslinking.

Description

technical field [0001] The invention relates to an amorphous poly-alpha-olefin grafted and modified by a polar monomer and a preparation method thereof, which belongs to the technical field of hot-melt adhesive modification and is mainly used in wood, glass, ceramics, plastics, metals, carpets, artificial Adhesive compounding for turf. Background technique [0002] Amorphous poly-α-olefin (so-called APAO) is a low-molecular-weight amorphous or low-crystallinity plastomer material produced by polymerization of α-olefins such as ethylene, propylene, and 1-butene. Amorphous polyalphaolefin has good fluidity and certain viscosity, so it is widely used in plastic filler masterbatch, tackifier masterbatch, hot melt adhesive, paper laminating agent, sealant, etc. However, amorphous polyα-olefin is a non-polar material, which has extremely poor adhesion to polar materials such as wood, glass, polar plastics, and metals, which severely limits its application. [0003] Modification ...

Claims

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Application Information

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IPC IPC(8): C08F255/00C09J151/06
Inventor 刘宝玉唐舫成杜壮汪加胜罗海亚
Owner GUANGZHOU LUSHAN NEW MATERIALS
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