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Thermoplastic polyolefin composition

A thermoplastic polyolefin and composition technology, applied in the field of thermoplastic polymer compositions, can solve the problems such as the physical properties of polyolefin blends that are not mentioned

Inactive Publication Date: 2007-08-01
BASSELL POLIOLEFINE ITAL SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The document is silent on the physical properties of the polyolefin blends thus obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2 and comparative Embodiment 3 and 4

[0077] The thermoplastic polyolefins with the compositions shown in Table 1 were melt blended in a twin-screw extruder Maris TM45V (Officine Meccaniche F.lli Maris SpA). The different components are metered separately into the first section of the equipment, but the ZnO is metered into the second section of the extruder. The extruder was operated under the following conditions:

[0078] screw speed

(rpm)

1st stage temperature

(℃)

2nd stage temperature

(℃)

3rd to 9th stage temperature

(℃)

10th stage temperature

(℃)

260

60

170

180

200

[0079] The thermoplastic polyolefin is extruded at a rate of 50-60 kg / h, and the melt temperature is 240-245°C. The melt bars are quenched in water and pelletized.

[0080] The polymer blend from the extrusion step was then formed into flat sheets with a second extruder COLINESLINEA / FOLGIO LASTRA 1200 (Colines Srl) equipped with an 80 mm screw and an L / D of 30...

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Abstract

A thermoplastic polyolefm composition comprising: (1) 30-70 wt.% of an heterophasic propylene polymer; (2) 20-60 wt.% of a copolymer of ethylene with a comonomer selected from the group consisting of C3-6 alpha, beta-unsaturated carboxylic acids, C1-8 alkyl esters of a C3-6 alpha, beta-unsaturated carboxylic acid and mixtures thereof; and (3) 2-20 wt.% of a metal compound selected from the group consisting of: acetates, stearates, hydroxides and oxides of zinc, magnesium, calcium, sodium and mixture thereof.

Description

technical field [0001] The present invention relates to thermoplastic polymer compositions, processes for their manufacture and thermoformed articles made therefrom. Background technique [0002] Thermoplastic polyolefin materials (TPO) are melt or reactor blends of polyolefin materials and uncrosslinked elastomers. Due to their thermoformability, soft touch, heat and UV resistance, TPOs are gaining traction in the automotive sector, especially in interior trim parts such as instrument panels, door panels and dashboard skins. [0003] The method of producing the interior trim generally involves at least a first step of extruding or calendering a TPO sheet or film and a second step of embossing the extruded or calendering sheet to create a "textured" surface. The embossed sheet or film is then formed, typically by thermoforming or low pressure injection molding, to obtain the final article. In thermoforming, the embossed sheet is heated until it becomes soft and pliable; wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08L23/16C08K3/22
CPCC08K3/22C08K5/098C08L23/0815C08L23/0869C08L23/10C08L23/142C08L23/16C08L51/06C08L2205/035C08L2207/02C08L2666/06C08L2666/02
Inventor U·祖彻利M·威阿尼洛
Owner BASSELL POLIOLEFINE ITAL SRL
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