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Prepn. of maleic anhydride grafted ethylene-alpha-octylene copolymers

A technology of octene copolymer and maleic anhydride is applied in the field of preparation of maleic anhydride grafted ethylene-α-octene copolymer, which can solve the problems of affecting application, low product grafting rate and the like, and achieve high grafting rate , the effect of inhibiting the cross-linking reaction and expanding the scope of application

Inactive Publication Date: 2004-06-30
SHANGHAI CHLOR ALKALI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to disclose a kind of preparation method of maleic anhydride grafted ethylene-α-octene copolymer, to overcome the low grafting rate of the product existing in the prior art and the obtained product to varying degrees There are certain color defects that affect its application

Method used

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  • Prepn. of maleic anhydride grafted ethylene-alpha-octylene copolymers
  • Prepn. of maleic anhydride grafted ethylene-alpha-octylene copolymers
  • Prepn. of maleic anhydride grafted ethylene-alpha-octylene copolymers

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Effect test

Embodiment 1

[0070] 50g ethylene-α-octene copolymer, 0.75g dicumyl peroxide (DCP), 5g maleic anhydride premixed, then join in internal mixer (Germany BRABENDER PL2100 torque rheometer), initial temperature setting Set at 150°C, set the rotation speed at 60r / min, and set the reaction time at 10 minutes. The results are shown in Table 1.

Embodiment 2

[0072] 50g ethylene-alpha-octene copolymer, 0.75g dicumyl peroxide (DCP), 5g maleic anhydride, 1.5g triphenyl phosphite are premixed, and then the homogeneously mixed material is added to a banbury mixer (Germany In the BRABENDER PL2100 torque rheometer), the initial temperature is set to 150° C., the rotating speed is set to 60 r / min, and the reaction time is set to 10 minutes. The results are shown in Table 1.

Embodiment 3

[0076] 50g of ethylene-α-octene copolymer, 0.75g of dicumyl peroxide (DCP), 5g of maleic anhydride, and 1.5g of diphenyldecyl phosphite are pre-mixed, and then the uniformly mixed material is added to the banburying mixer In the machine (BRABENDER PL2100 torque rheometer in Germany), the initial temperature is set to 150° C., the rotating speed is set to 60 r / min, and the reaction time is set to 10 minutes. The results are shown in Table 1.

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Abstract

The invented graft copolymer of maleic anhydride and ethylene-alpha-octylene is prepared as follows: ethylene-alpha-octylene copolymer, maleic anhydride peroxide type initiator and phosphite ester like compound are put in extruder ar internal mixer to proceed melt grafting reaction to obtain maleic anhydride graft ethylene-alpha-octylene copolymer. Said method is high in grafting rate, low in gel content.

Description

technical field [0001] The invention relates to a preparation method of maleic anhydride grafted ethylene-α-octene copolymer. Background technique [0002] Ethylene-α-octene copolymer is a new type of polyolefin thermoplastic elastomer (referred to as POE) with narrow relative molecular weight distribution and narrow comonomer distribution structure controllable produced by Dow Chemical Company of the United States using metallocene as a catalyst. Mechanical properties and rheological properties. In addition, POE has good affinity with polyolefins, low-temperature toughness, and high performance-price ratio. Therefore, it is widely used in the toughening and modification of polyolefins. However, since POE is a non-polar polymer, its further application is limited. [0003] Maleic anhydride grafted polyolefin (PO) such as polyethylene (PE), polypropylene (PP), ethylene propylene rubber (EPR), etc. can improve the molecular polarity of polyolefin, thereby greatly expanding it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/02
Inventor 李明章长明黄风华张勇李超勤
Owner SHANGHAI CHLOR ALKALI CHEM
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