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 graf

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1:

[0031] After dissolving 30g of maleic anhydride with 30g of acetone, it was mixed with 3kg of APAO792 (Degussa), 3g of 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane, 3g of (3) Ethoxylated trimethylolpropane triacrylate, 15g of tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester are mixed uniformly with a high-speed mixer, and wait for the solvent After volatilization, reactive 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, 180 ℃, and the material is at The reaction time of the twin-screw extruder is 0.03h. The light-colored graft particles are obtained by using underwater pelletizing equipment. The grafting rate of maleic anhydride after acid-base titration is 0.63%. After testing, the storage period is one year.

Example Embodiment

[0032] Example 2:

[0033] Add 100kg of ΑPAO703 (Degussa) into the reaction kettle, fully melt it at 160°C, add maleic anhydride and stir evenly, the maleic anhydride added is 3% of the weight of Α-PA-O, add dropwise with liquid feeding equipment Initiator tert-butyl cumene peroxide, the amount of initiator is 0.5% of the weight of APAO, and the grafting aid is added dropwise at the same time. The addition amount of the grafting aid is 5% of the weight of A-PA-O. The branching agent is a mixture of styrene and diethylene glycol diacrylate in a weight ratio of 3:2. Adjust the liquid feeding speed so that the initiator and the grafting aid are added dropwise within 2 hours, and then continue to react for 2 hours, 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 evenly and then vacuum The unreacted maleic anhydride is removed, and after cooling, a light yellow maleic anhydride graf...

Example Embodiment

[0034] Example 3:

[0035] Add 100kg of ΑPAO508 (Degussa) into the reactor, fully melt at 190°C, add glycidyl methacrylate and stir evenly, the added glycidyl methacrylate is 6% of the weight of ΑPAO, use liquid feeding equipment Drop the initiator dicumyl acetone peroxide solution (dicumyl peroxide is dissolved in the same mass of acetone), the amount of the initiator is 0.75% of the weight of APAO, and at the same time, the grafting aid is added dropwise to aid the grafting The addition amount of the grafting agent is 2% of the weight of APAO, and the co-grafting agent is a mixture of polyethylene glycol diacrylate and pentaerythritol tetraacrylate with a weight ratio of 9:1. The liquid feeding rate is adjusted to enable the initiator and the co-grafting The branching agent was added dropwise within 1.5 hours, after which the reaction was continued for 2 hours, and then the antioxidant tetra[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and tri(2) ...

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PUM

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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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