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Processing assistant for polyolefin granulation process, and preparation method and application thereof

A processing aid and polyolefin technology, which is applied in the field of processing aids and its preparation in the polyolefin granulation process, to achieve good viscosity reduction effect, enhanced internal lubrication, and simple preparation process

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the existing problems in the prior art, the present invention provides a composite processing aid, which is easy to prepare, low cost, high efficiency, and pollution-free, and can be used in the polyolefin granulation process; in the case of a small amount of addition It can play a very good effect of reducing viscosity, which can reduce the processing torque and melt temperature, so as to reduce energy consumption and wear.

Method used

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  • Processing assistant for polyolefin granulation process, and preparation method and application thereof
  • Processing assistant for polyolefin granulation process, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Heat 1000 g of polyethylene glycol 6000 to 80 °C. After the polyethylene glycol is melted, put 96 grams of phosphoric acid, 4 grams of antioxidant 1010, and 2 grams of auxiliary antioxidant 168. After stirring for 120 minutes, the product was taken out, cooled and ground to obtain a powdered processing aid. That is, processing aid 1#, the molar ratio of polyethylene glycol:phosphoric acid is 1:5.

Embodiment 2

[0037] Replace 96 grams of phosphoric acid with 2.6 grams of boric acid, and all the other conditions are the same as in Example 1. That is, processing aid 2#, the molar ratio of polyethylene glycol: boric acid is 1:0.25.

Embodiment 3

[0039]Heat 1000 g of polyethylene glycol 6000 to 80 °C. After polyethylene glycol is melted, put in 2.6 grams of boric acid, 500 grams of fumed silica, 4 grams of antioxidant 1010, and 2 grams of auxiliary antioxidant 168. After stirring for 120 minutes, the product is taken out, cooled and ground to obtain a powder processing aids. That is, processing aid 3#, the molar ratio of polyethylene glycol: boric acid is 1:0.25.

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Abstract

The invention relates to a processing assistant for a polyolefin granulation process, and a preparation method and application thereof. The processing assistant comprises the following blended components: low polymers and polybasic acid, wherein the mol ratio of low polymers to polybasic acid is 1:(0.1-10); the low polymers are linear or short-branched-chain low polymers of which the molecular weight is 2000-20000, and at least one end of the molecular chain has a terminal polar group; and the polybasic acid is an inorganic polybasic acid or organic polybasic acid. The processing assistant can be used in the polyolefin granulation process, can have a good viscosity breaking effect under the condition of small addition amount, and can lower the processing torque and melt temperature, thereby achieving the functions of lowering the energy consumption and reducing the abrasion.

Description

technical field [0001] The present invention relates to a processing aid for polyolefin resins. More specifically, the present invention relates to a processing aid for polyolefin granulation process and its preparation method and application. Background technique [0002] With the development of synthetic resin polymerization technology and the increase of market demand, polyolefin resin products with high molecular weight, narrow distribution and low melt index are continuously introduced, mainly including high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE) ), random copolymerized polypropylene (PPR), polybutene (PB), metallocene polyethylene (mPE), etc. These resins have excellent mechanical properties, crack resistance and creep resistance, high added value, and market demand The amount is large, but its structural characteristics determine that the machine must bear a large load and consume high power during the granulation or molding process of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08L71/08C08L67/00C08L83/00C08K5/17C08K3/38C08K3/32C08K13/02
Inventor 杨庆泉张师军王小兰邹浩李杰尹华邵静波吕明福高达利徐凯徐萌吕芸张丽英刘涛张浩
Owner CHINA PETROLEUM & CHEM CORP
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