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Filled thermoplastic olefin composition

A thermoplastic olefin and composition technology, applied in the field of thermoplastic olefin composition, can solve the problems such as not getting

Inactive Publication Date: 2006-06-07
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, propylene-based polymer compositions are not available that incorporate desired levels of filler while maintaining desirable physical properties, including elasticity, tensile strength, extensibility, elongation during processing , heat resistance, low temperature elasticity, thermoformability and thermal stability

Method used

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  • Filled thermoplastic olefin composition
  • Filled thermoplastic olefin composition
  • Filled thermoplastic olefin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0130] Table 1 reports the results of the different tests carried out on the above polymers.

[0131] MicroWhite 100, 15 microns

[0132] MicroWhite 100, 15 microns

[0133] MicroWhite 100, 15 microns

[0134] The data in Table 1 show the improved properties of the compositions of the invention. In particular, the data indicate that the compositions of the present invention can incorporate greater than 30 volume percent filler, and in the largest instance greater than 55 volume percent filler, while still maintaining acceptable physical properties. Even with greater than 55% filler by volume, some compositions of the present invention have an ultimate tensile strength of at least 100 psi, while having an elongation at break of at least 500%, a Shore A of less than 90, and a Shore A of greater than 4000 psi. flexural modulus. In addition, the filled thermoplastic olefin composition of the present invention maintains ultimate elongation, ultimate...

Embodiment 2

[0136] The following compositions were prepared on a Brabender equipped with a 250ml mixing cup TM Prepared in a mixer. In each case, the temperature of the mixer was set to a mixing temperature of 150C, a mixing speed of 50 rpm, and mixed for 4 minutes, reducing the rpm if necessary to maintain the melt temperature below 175C. The composition was removed from the Brabender mixer and allowed to cool to room temperature before being granulated for use as described below.

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Abstract

The present invention relates to filled thermoplastic olefin compositions comprising (a) a first polypropylene comprising (i) substantially isotactic propylene sequences, (ii) a narrow molecular weight distribution , (iii) a broad composition distribution, and (b) at least about 20 volume percent filler, based on the total volume of the composition. Optionally, the composition may comprise a second polypropylene different from the first polypropylene, both polypropylenes being preferably propylene / α-olefin copolymers. The fillers can be organic or inorganic and, among other applications, the present compositions can be used as protective coatings for wires and cables.

Description

technical field [0001] This application claims the benefit of US Provisional Application 60 / 468,027, filed May 5, 2003, the disclosures and disclosures of which are incorporated herein by reference. [0002] The technical field of the invention is filled thermoplastic olefin compositions, especially filled thermoplastic olefin compositions containing propylene / alpha-olefin copolymers. Background technique [0003] Highly filled polymer systems are widely used in commercial applications such as flame retardant (FR) applications, sound management applications, wire and cable applications, polymer master batches, roofing membranes, wall coverings and automotive applications, etc. [0004] It is desirable to employ very high levels of fillers in these applications, typically greater than 20% by volume, preferably greater than 25% by volume, more preferably greater than 30% by volume, even more preferably greater than 40% by volume, and optionally greater than 55% by volume if a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08K3/00C08K3/26C08L23/08
CPCC08K3/26C08L23/0853C08L23/14C08L23/142C08L2201/02C08L2205/02C08L2314/06C08L2666/06
Inventor Y·W·张B·W·沃尔瑟J·M·科让
Owner DOW GLOBAL TECH LLC
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