xylene soluble content in polypropylene

EPO

6 A block copolymer as claimed in any preceding claim wherein the content of components having a molecular weight of 50 000 or less in the 20C xylene-soluble component in the total polymer after melt-kneading is 2 0% by weight or less 7 Film formed by melt-extruding polypropylene block copolymer as claimed in claim 6 8

Amorphous phase separation in polypropylene block

Abstract We achieved a thermal sampling scanning of the β-relaxation region of polypropylene (PP) block copolymers together with the β process of isotactic polypropylene high-density polyethylene propylene-ethylene rubber and part of the PP bloc copolymer soluble in xylene and insoluble in ether

Plastics

Plastics -- Determination of xylene-soluble matter in polypropylene This document has been re-assessed by the committee and judged to still be up to date ISO 16152:2005 specifies a method for determining the mass fraction of a polypropylene homopolymer or copolymer which is soluble in xylene

Polypropylene Chemical Resistance Guide

POLYPROPYLENE CHEMICAL RESISTANCE About HMC Polymers HMC Polymers is focused on being Asia's number ONE in PP We work in close cooperation with our customers to improve existing products and develop new resins for the rapidly changing markets we serve The company offers a wide range of products suitable for all major applications and processes as˜well as innovative new

RSC Advances

Xylene soluble fraction CrystEX made by Polymer Char company was used to obtain the xylene soluble (mainly EPR in the case of this paper) fraction (ωsol ) and the weight fraction of ethylene comonomer in soluble fraction (C2 in EPR) The CrystEX is equipped with a special IR sensor for ethylene content determination The solvent is xylene The

xylene

Highly crystalline polypropylene with low xylene solubles Polypropylne hautement cristallin faible teneur en extraits solubles de xylne The said catalysts allow the preparation of ethylene copolymers with a low content of xylene soluble fractions Lesdits catalyseurs permettent de prparer des copolymres d'thylne ayant un faible contenu de fractions solubles de xylne The

Polymer Analysis for QC in Polymer Industries

Bruker offers the minispec mq-one Polymer Analyzer which is specifically designed for polymer industries The instrument provides QC answers for process control in a timely and reliable manner The minispec mq-one can be used for xylene soluble content determination in Polypropylene (PP)

Controlled properties of high

When the xylene soluble (XS) component was 20 wt% and an intrinsic viscosity ratios (λ) of xylene soluble component and xylene insoluble (XIS) component was1 6 the impact strength and flexural modulus of the HiPP samples were higher than 50 kJ/m2 and 900 MPa respectively The compositional heterogeneity morphology and melting behavior of two commercial high-impact polypropylene

LUMMUS NOVOLEN PDF

High performance Ziegler-Natta catalyst systems processes for producing such catalyst systems and use thereof The composition is comprised of from 0 to 10 weight percent preferably from 0 to 5 weight percent of the fraction soluble in xylene from 10 to 50 weight percent preferably from 15 to 45 weight percent of the low crystallinity fraction from 0 to 20 weight percent preferably from

AN: Soluble Fraction Analysis for Quality Control

Historically the amorphous or soluble content has been measured by solubility in xylene using manual wet chemistry methods that are time-consuming and involve large amounts of solvent CRYSTEX QC is an innovative approach that automates the analysis of polypropylene samples in QC plant or processing laboratories The instrument speeds up the analysis process and eliminates major steps usually

Non

The polypropylene copolymer according to the present invention has a low melting point and also is excellent in the low temperature heat sealing effect transparency and strength and the film prepared therefrom can be effectively used as a sealing layer of the non-stretched polypropylene-based film

China Ester Soluble Chlorinated Polypropylene

Ester soluble chlorinated polypropylene composite ink Chlorinated polypropylene CPP Who's AEI With more than 10years chemical field experience Anhui Elite Industrial Co Ltd (hereafter called AEI) has been a professional supplier of Chemical resins food additives geosynthetics silane titanium dioxide and nanoparticles

High crystallinity high melt flow rate polypropylene

A propylene homopolymer having a xylene soluble content of less than 2 percent a xylene insoluble fraction having a meso pentad content of greater than 96 percent and an average meso run length of at least 140 and a melt flow rate of at least 20 dg/min but less 15 / 24 than 60 dg/min wherein said propylene homopolymer is prepared by a process comprising polymerizing propylene in a bulk

Synthesis of Polypropylene/poly(ethylene

Because the gas-phase ethylene content in the transition periods was lower than that of the monomer mixture feed copolymer formed in these periods has lower ethylene content than those formed in the steady periods of the copolymerization stage As a result the transition periods led to formation of more segmented ethylene/propylene copolymer (EPS) and decreased its ethylene content When the

CFR

(a) For the purpose of this section chlorinated polyethylene consists of basic polymers produced by the direct chlorination of polyethylene conforming to the density maximum n-hexane extractable fraction and maximum xylene soluble fraction specifications prescribed under item 2 1 of the table in 177 1520(c)

EPO

6 A block copolymer as claimed in any preceding claim wherein the content of components having a molecular weight of 50 000 or less in the 20C xylene-soluble component in the total polymer after melt-kneading is 2 0% by weight or less 7 Film formed by melt-extruding polypropylene block copolymer as claimed in claim 6 8 Composite film

(19)

EP2 243 803B1 3 5 10 15 20 25 30 35 40 45 50 55-the MFR2 (230 C) of the heterophasic polypropylene composition measured according to ISO 1133 is more than 25 g/10 min [0014] Additionally it is preferred that the Mz/Mw of the xylene cold soluble fraction (XCS) of the heterophasic poly- propylene composition is of more than 2 6 wherein Mz is the z-average molecular weight

Uses of Xylene

P-xylene-2-sulfonic acid is soluble in ethanol It is manufactured as a white crystalline powder There are not many broad uses for p-xylene-2-sulfonic acid The chief use of p-xylene-2-sulfonic acid is as a reagent to determine serum cholesterol levels Exposure Risks of Xylene While xylene serves many valuable uses across multiple industries it comes with its own risks to those who work

Chemical Modification of Polypropylene by Maleic Anhydride

Chemical Modification of Polypropylene by Maleic Anhydride: Melt Grafting Characterization and Mechanism Oromiehie A Ebadi-Dehaghani H and Mirbagheri S order to remove the non- reacted monomers and oligomers if formed during process (reaction 8 in the Fig 1) and initiator by refluxing in xylene for 4 hours and precipitated in acetone Finally they were dried in a vacuum oven at 105 C

Xiong Wang * Renwei Xu Wenqian Kang Jie Fan

Xiong Wang Renwei Xu Wenqian Kang Jie Fan Xiaoyu Han and Yunbo Xu Subject: Polypropylene (PP) is one of the most widely used polymers In this paper three types of PPs including random PP impact PP and impact PP with high clarity were prepared through

Polypropylene fiber for nonwoven material from melt

The composition is chosen from group comprising the following components: (i) crystalline propylene polymeric composition comprising at least 0 8 wt -% of ethylene melting point 155C or above xylene-soluble fraction at room temperature less 10 wt -% and the ratio index of polymeric fraction collected at temperature 25-95C and xylene-soluble fraction at temperature above 4 and (ii

US Patent Application for POLYPROPYLENE FOR USE IN

The present invention relates to polypropylene compositions having a broad molecular weight distribution with a relatively high amount of xylene soluble material The compositions have an Mw/Mn of five or greater but preferably greater than 5 5 and more preferably greater than 6 0 The compositions have xylene solubles from 5 0 to 8 0 percent by weight preferably from 5 5 to 8 0 percent by

「xylene」にしたのとい

This polypropylene film for a capacitor includes a polypropylene resin having a melting point of 162 to 167C containing 2 to 7 mass% of a propylene-based resin component (cold xylene-soluble portion) soluble in cold xylene and having a weight average molecular weight of the cold xylene-soluble portion of 110^ 4 to 110^6 に

Polypropylene Materials for Biaxially Oriented Film

Some relationships among polymer characteristics processability and properties of biaxially oriented film have been obtained in this study For a balance between processability on a tenter frame and the film properties an optimum level of xylene soluble fractions is preferred

What are the alternate solvents for xylene?

xylene is practically insoluble in water hence no polar solvent could be used Usually alcohol is used as a solvent for xylene even though mostly it requires no mixing for solution But if your looking for other options there are researches us

Biaxially oriented polypropylene films

2) the content of the fraction soluble in xylene at room temperature (about 25) less than 3 wt % preferably less than 2 5 wt % and the value of the ratio of the polymer fraction collected at the temperature range from 25 to 95 (TREF method: fractionation by elution with increasing temperature using xylene) to the number mentioned fraction soluble in xylene exceeds 8 wt %/ wt

Controlled properties of high

When the xylene soluble (XS) component was 20 wt% and an intrinsic viscosity ratios (λ) of xylene soluble component and xylene insoluble (XIS) component was1 6 the impact strength and flexural modulus of the HiPP samples were higher than 50 kJ/m 2 and 900 MPa respectively

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