Composition containing polypropylene copolymer, polypropylene copolymer material, and preparation method and application of polypropylene copolymer material

A polypropylene copolymer and composition technology, applied in the field of polyolefin materials, can solve the problem of unsatisfactory adhesion effect of ink and adhesive, difficult diffusion of ink or adhesive molecules, poor gloss and transparency and other problems, to achieve the effect of low melting temperature, low crystallinity and good hygiene

Pending Publication Date: 2021-10-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Compared with metallocene random copolymerized polypropylene, ordinary random copolymerized polypropylene produced by Ziegler-Natta catalyst has higher crystallinity, molecules are in a thermodynamically stable state, and have more stable chemical properties, ink or adhesive It is difficult for molecules to diffuse on the surface, so that the adhesion effect of ink, adhesive, etc. on the surface of the film is very unsatisfactory
[0006] Therefore, when ordinary random copolymerized polypropylene formed CPP films produced by Ziegler-Natta catalysts are used for high-end products in the fields of electronic packaging, food packaging, and cosmetic packaging, in addition to poor gloss and transparency, the hygienic properties are slightly Low-level problems, there are also problems that are not easy to corona, and corona decays quickly

Method used

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  • Composition containing polypropylene copolymer, polypropylene copolymer material, and preparation method and application of polypropylene copolymer material
  • Composition containing polypropylene copolymer, polypropylene copolymer material, and preparation method and application of polypropylene copolymer material
  • Composition containing polypropylene copolymer, polypropylene copolymer material, and preparation method and application of polypropylene copolymer material

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0043] In formula (1), the two Ms are the same and are Ti, Zr or Hf;

[0044] each X is the same and is fluorine, chlorine or bromine;

[0045] R 1 , R 2 , R 3 , R 4 , R 7 , R 8 , R 9 and R 11 Each independently is H, substituted or unsubstituted C 1 -C 4 Alkyl, substituted or unsubstituted C 2 -C 4 Alkenyl, substituted or unsubstituted C 7 -C 20 Aralkyl, substituted or unsubstituted C 6 -C 20 Aryl;

[0046] R 1 , R 2 , R 3 , R 4 , R 7 , R 8 , R 9 and R 11 The optional substituents in each independently selected from C 1 -C 4 at least one of the alkyl groups of

[0047] R 12 and R 13 each independently is H, methyl or ethyl;

[0048] R 5 is phenyl; and

[0049] R 6 and R 10 Both are hydrogen.

specific Embodiment approach 2

[0050] In formula (1), the two Ms are the same and are Ti, Zr or Hf;

[0051] each X is the same and is chlorine;

[0052] R 1 and R 11 Both are methyl;

[0053] R 2 , R 3 , R 4 , R 6 , R 7 , R 8 , R 9 and R 10 Both are H;

[0054] R 5 is phenyl; and

[0055] R 12 and R 13 Each is independently H, methyl or ethyl.

specific Embodiment approach 3

[0056] In formula (1), the two Ms are the same and are Ti, Zr or Hf;

[0057] each X is the same and is chlorine;

[0058] R 1 and R 11 Both are methyl;

[0059] R 2 , R 3 , R 4 , R 6 , R 7 , R 8 , R 9 and R 10 Both are H;

[0060] R 5 is phenyl; and

[0061] R 12 and R 13 Both are methyl.

[0062] Preferably, in the polypropylene copolymer, the content weight ratio of the structural unit A to the structural unit B is 100:(0.5-5); more preferably, in the polypropylene copolymer, the structure The content weight ratio of unit A and structural unit B is 100:(1.5-3).

[0063] In order to achieve better effects of low crystallinity and low melting point of the copolymer, preferably, the polypropylene copolymer has 2,1-insertion. This 2,1-insertion can be detected by NMR.

[0064] Preferably, the melting temperature of the polypropylene copolymer is less than or equal to 147°C, more preferably, the melting temperature of the polypropylene copolymer is less than o...

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Abstract

The invention relates to the field of polyolefin materials, and discloses a composition containing a polypropylene copolymer, a polypropylene copolymer material, and a preparation method and application of the polypropylene copolymer material. The composition provided by the invention contains a polypropylene copolymer and an antioxidant, and the composition also optionally contains an acid acceptor, relative to 100 parts by weight of the polypropylene copolymer, the content of the antioxidant is 0.02-0.4 part by weight, and the content of the acid acceptor is 0-0.3 part by weight; and the polypropylene copolymer contains a structural unit A and a structural unit B, the structural unit A is a structural unit provided by a propylene monomer, the structural unit B is a structural unit provided by an ethylene monomer and/or an alpha-olefin monomer except the propylene monomer, and the polypropylene copolymer is prepared through catalysis of a metallocene catalyst. The polypropylene copolymer material provided by the invention is obviously improved in the aspects of glossiness, transparency, sanitation, corona performance and the like.

Description

technical field [0001] The present invention relates to the field of polyolefin materials, in particular to a composition containing a polypropylene copolymer, a method for preparing a polypropylene copolymer material using the composition, and a polypropylene copolymer material prepared by the method, the Application of polypropylene copolymer material in polypropylene casting film. Background technique [0002] Cast polypropylene film (CPP) is a non-stretched, non-oriented flat film produced by melt casting and quenching. Compared with blown film, it is characterized by fast production speed, high output, superior film transparency, gloss and thickness uniformity, and also has good heat sealability, oil resistance, retort resistance, scratch resistance and packaging machinery Good applicability, and because it is flat extruded film, subsequent processes such as printing and compounding are very convenient, so it is widely used in the packaging of textiles, flowers, food, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08F210/16C08F210/06C08F4/6592C08J5/18
CPCC08L23/14C08F210/16C08F210/06C08J5/18C08J2323/14C08F4/65925
Inventor 蒋洁杜建强冯伟王希王宇超许越峥王梦飞高志武
Owner CHINA PETROLEUM & CHEM CORP
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