Browse Prior Art Database

Antistatic Plastic Shovels

IP.com Disclosure Number: IPCOM000029505D
Publication Date: 2004-Jul-01
Document File: 2 page(s) / 8K

Publishing Venue

The IP.com Prior Art Database

Abstract

Plastic tool blades, for example polyolefin shovel blades, are effectively made antistatic by incorporation therein of a polyetheresteramide additive. The shovels are suitable for example for use with powders, granules, dusts, and the like, in municipal, industrial or household settings. The polyolefin is for example polypropylene or polyethylene, for example high density polyethylene (HDPE).

This text was extracted from a Microsoft Word document.
This is the abbreviated version, containing approximately 54% of the total text.

Antistatic Plastic Shovels

Plastic tool blades, for example polyolefin shovel blades, are effectively made antistatic by incorporation therein of a polyetheresteramide additive.  The shovels are suitable for example for use with powders, granules, dusts, and the like, in municipal, industrial or household settings.  The polyolefin is for example polypropylene or polyethylene, for example high density polyethylene (HDPE).

The polyetheresteramide additive is incorporated in the molded plastic articles by known methods, for example by mixing the additive with the plastic in appliances such as calendars, mixers, kneaders, extruders, and the like.  The additives may be added to the plastic alone or with further optional components.  The additives may be added by dry blending, compaction, wet mixing in the form of a solution, dispersion or suspension in a solvent, water or oil, as a masterbatch or in the melt.  For example, the additives are incorporated in the plastic during processing.  Processing includes extrusion, co-kneading, pultrusion, compression molding, sheet extrusion, thermoforming or injection molding.  The polyetheresteramides are present at a level from about 2% to about 30% by weight, from about 5% to about 15% by weight, from about 0.5% to about 15% by weight, for example from about 1% to about 10% by weight, for instance from about 2% to about 8% by weight, or from about 4% to about 10%, based on the weight of the polymer.

The polyetheresteramide additive...