Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Olefin polymer films and methods of making same

A technology of olefin polymers and compounds, applied in the field of olefin polymer film and its preparation, can solve the problems of poor heat sealability, poor processability, narrow molecular weight distribution, etc., and achieve the effects of easy film forming, excellent mechanical strength and heat sealability

Pending Publication Date: 2022-07-12
HANWHA SOLUTIONS CORP
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, LLDPE produced under metallocene catalysts suffers from poor processability due to narrow molecular weight distribution, and films made from them tend to have poor heat-sealability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Olefin polymer films and methods of making same
  • Olefin polymer films and methods of making same
  • Olefin polymer films and methods of making same

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0126] Preparation method of olefin polymer film

[0127] In a specific embodiment, the present invention provides a method for preparing an olefin polymer film, the method comprising: step (a), in a process comprising at least one transition metal compound represented by the following Chemical Formula 1 and at least one co-catalyst In the presence of the catalyst of the compound, the olefin monomer is polymerized to obtain an olefin polymer; and in step (b), the olefin polymer is formed to obtain a film, wherein the olefin polymer satisfies: (1) a density of 0.910 g / cm 3 to 0.940g / cm 3 , preferably 0.910g / cm 3 to 0.920g / cm 3 ; (2) Melt index (I 21.6 ) and the melt index (I 2.16 ) ratio (MFR) of 10 to 60, preferably 20 to 40; and (3) a comonomer distribution slope (CDS) defined by the following Mathematical formula 1 of 1 or more, preferably 2 to 5, the olefin polymer The film has a heat seal strength of 90 gf / 2.5cm or more, preferably 90 to 200 gf / 2.5cm, measured at 0....

preparation Embodiment 1

[0139][Preparation Example 1] bis[(2-trimethylsilylmethylallyl)cyclopentadienyl]hafnium dichloride (bis[(2-trimethylsilylmethylallyl)cyclopentadienyl]hafnium dichloride; chemical formula 1- 9) Preparation

[0140] 2-(trimethylsilylmethyl)-2-propen-1-ol (2-(trimethylsilylmethyl)-2-propen- 1-ol) preparation

[0141] To a solution prepared by dissolving 2-(trimethylsilylmethyl)allylacetate (2-(trimethylsilylmethyl)allylacetate; 2.69 g, 14.4 mmol) in methanol (22 mL), potassium carbonate ( K 2 CO 3 ) in water (6.6 M, 14.4 mmol). After the addition was complete, it was stirred at room temperature for 4 hours. After stirring, water was added thereto to terminate the reaction. After the organic layer was extracted with diethyl ether, the organic layer was extracted with magnesium sulfate (MgSO 4 ) to remove residual water. All solvents were removed under vacuum to obtain 1.51 g (72%) of a pale yellow oil compound.

[0142] 1 H-NMR (CDCl 3 , 300MHz): δ4.90-4.88(m, 1H), 4...

preparation Embodiment 2

[0159] [Preparation Example 2] dimethyl bis[(2-trimethylsilylmethylallyl)cyclopentadienyl]hafnium (dimethyl bis[(2-trimethyl silylmethylallyl)cyclopentadienyl]hafnium; chemical formula 1- 10) Preparation

[0160] To the mixture obtained by diluting bis[2-(trimethylsilylmethyl)allyl]cyclopentadienyl hafnium dichloride (2.4 g, 3.79 mmole) prepared in Preparation Example 1 in toluene To the solution, MeMgBr (3.0 M in diethyl ether, 11.4 mmole) was slowly added at -30°C, then the temperature was slowly raised to room temperature and stirred for 12 hours. When the reaction was complete, extraction was performed with toluene and filtration, and the solvent of the filtrate was dried under vacuum. The resulting solid was washed with hexane and dried to obtain 2.08 g (93%) of a white solid compound.

[0161] Using 3.87 g of the compound represented by Chemical Formula 1-10, 200 g of a supported catalyst was prepared in the same manner as in Preparation Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an olefin polymer film and a preparation method thereof. The olefin polymer film, specifically the linear low-density polyethylene film, according to the specific embodiment of the invention has excellent mechanical strength and heat sealability while being easy to prepare.

Description

technical field [0001] The present invention relates to an olefin polymer film and a preparation method thereof. In particular, the present invention relates to an olefin polymer film that is easy to film and has excellent heat seal strength, especially low temperature heat seal strength, and a method for producing the same. Background technique [0002] As a catalyst for polymerizing olefins, metallocene catalysts are composed of transition metals or transition metal halides and ligands such as cyclopentadienyl, indenyl and cycloheptadienyl, etc. The compound formed by coordination and bonding has the basic form of a sandwich structure. [0003] As another catalyst for polymerizing olefins, Ziegler-Natta catalysts have non-uniform properties of active centers because the metal components as active centers are dispersed on an inert solid surface, while metallocenes A catalyst is a compound with a fixed structure and is therefore considered to be a single-site catalyst in w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08F210/16C08F210/14C08F4/6592C08F4/659C08F4/646C08F2/34C08F2/01
CPCC08F210/16C08J5/18C08F2420/07C08F4/65916C08F4/65912C08J2323/08C08J2323/06C08F4/65925C08F210/14C08F2500/12C08F2500/06C08F2500/26C08F2500/35C08F4/65908C08F4/6465C08F2/34C08F2/01C08F4/6592C08F10/02
Inventor 郑义甲金晟东朴惠兰徐浚豪李文熙林成在郑有钉郑泰旭
Owner HANWHA SOLUTIONS CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com