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Active substance composition on the basis of metallocene polyolefin waxes for producing stabilized, light-resistant plastic materials

A technology of metallocene polypropylene and active substances, which is applied in the field of light stabilizers and active substance compositions, and can solve problems such as low strand strength, incorporation, and reduced mechanical properties

Inactive Publication Date: 2014-01-15
CLARIANT FIANCE (BVI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Higher addition levels can lead to incorporation problems due to viscosity differences, resulting in uneven distribution of components and resulting in reduced mechanical properties, such as lower strand strength of the produced masterbatch

Method used

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  • Active substance composition on the basis of metallocene polyolefin waxes for producing stabilized, light-resistant plastic materials
  • Active substance composition on the basis of metallocene polyolefin waxes for producing stabilized, light-resistant plastic materials
  • Active substance composition on the basis of metallocene polyolefin waxes for producing stabilized, light-resistant plastic materials

Examples

Experimental program
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Embodiment

[0120] The metallocene waxes a to d listed in Table 1 used according to the invention were obtained by using the metallocene catalyst dimethylsilylbisindene according to the method given in EP A0 384 264 (General Procedure Examples 1-16) It is prepared by copolymerizing propylene and ethylene with zirconium dichloride. Different softening points and viscosities can be adjusted by changing ethylene feed and polymerization temperature.

[0121] Product properties were determined according to the following methods:

[0122] Dropping point ISO 2176 / / ASTM D 3954(℃)

[0123] Viscosity DIN 53018(mPa·s)

[0124] Density ISO 1183(g / cccm)

[0125] Molar mass determination by means of gel permeation chromatography (GPC)

[0126] Metallocene waxes used

[0127] Metallocene waxes a) Metallocene wax b) Metallocene wax c) Metallocene waxes d) Dropping point (℃) 92 93 102 140 Viscosity at 170°C (mPa·s) 2900 7900 9800 65

[0128] Pr...

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Abstract

The invention relates to an active substance composition containing a high portion of one or more light-protecting products, such as multifunctional stabilizers, UV absorbers, nicker-quenchers and stabilizers on the basis of sterically hindered amines (HALS) and several polyolefin waxes, wherein one or more metallocene polyolefin waxes are used and optionally further waxes, for example polar or nonpolar non-metallocene polyolefin waxes are present. All polyolefin waxes together made up at least 10% by weight of the formulation and melt in the temperature range between 50 and 170° C. The inventive active substance composition has reduced dusting and is particularly used for the masterbatch production for producing stabilized and light-resistant plastic materials.

Description

technical field [0001] The invention relates to active substance compositions consisting of light stabilizers, especially UV-stabilizers, and waxes, as well as their preparation and use. Background technique [0002] UV stabilizers refer to various product types such as UV absorbers, HALS products (Hindered Amine Light Stabilizers) or also quenchers. [0003] The active substance compositions according to the invention comprise waxes which are produced by means of metallocene catalysts and have a low dropping point, high transparency and low viscosity. By using these waxes, the incorporation of UV stabilizers is made easier, process temperatures can be kept significantly lower, so that loadings significantly higher than hitherto customary levels can be achieved, and polymer carriers can be dispensed with. [0004] JP 2005054019 describes the production of automotive exterior parts containing UV absorbers and HALS in proportions up to 15 parts and antioxidants up to 5 parts....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/22C08J5/10C08L23/14C08K5/3432C08K5/00
CPCC08L23/0807C08L23/14C08J2423/00C08J3/226C08L2314/06C08L23/02C08L2205/02C08L2666/06C08L91/06C08J3/22C08K5/3432
Inventor R·科林
Owner CLARIANT FIANCE (BVI) LTD