Polyolefin elastomer and preparation method thereof

A polyolefin elastomer, alpha olefin technology, applied in the field of polyolefin elastomer and its preparation, can solve the problems of time-consuming, complicated operation, low efficiency and the like
CN110387003AActive Publication Date: 2019-10-29CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2019-10-29

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Abstract

The invention relates to the field of olefin polymerization, in particular to a polyolefin elastomer and a preparation method thereof. The molecular weight of the polyolefin elastomer is distributed as a bimodal structure, and the preparation method includes the following steps that in an organic solvent, in the presence of a catalyst and hydrogen, the polymerization reaction of ethylene, [alpha]olefin and optional cycloolefin is conducted; the catalyst contains a main catalyst and an activator, and the activator includes one or more optional compounds containing organic boron; and the main catalyst is one or more pre-transition metal compounds or crystals thereof shown in a formula (1). According to the polyolefin elastomer and the preparation method thereof, the pre-transition metal compounds or the crystals thereof are adopted to be the main catalyst for polymerization, and the polyolefin elastomer with obvious bimodal distribution is prepared by using a catalyst system in a singlereactor.
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Description

technical field

[0001] The invention relates to the field of olefin polymerization, in particular to a polyolefin elastomer and a preparation method thereof. Background technique

[0002] Polyolefin elastomer is a widely used polymer material, usually a copolymer of ethylene and α-olefin, which can be used as film and wire and cable sheathing. As an elastomer, it is the most widely used in automotive applications. It can be used as a resin toughening material for automotive parts, and can be used as sealing strips, hose tapes, etc.

[0003] Conventional ethylene, propylene copolymers (EP Elastomer), or ethylene, propylene and a small amount of non-conjugated diene copolymers (EPDM) are polyolefin elastomers. Generally, high molecular weight olefin elastomer endows materials with good mechanical properties. For high molecular weight EPDM, its corresponding Mooney viscosity is usually very high (for example, more than 100), which brings great pressure to its later processing,...

Claims

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