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Additives for Expanded Polystyrene Suspension Formulations

IP.com Disclosure Number: IPCOM000244928D
Publication Date: 2016-Feb-01
Document File: 3 page(s) / 22K

Publishing Venue

The IP.com Prior Art Database

Related People

Baker Hughes Incorporated: OWNER [+2]

Abstract

New products useful as additives to Expanded Polystyrene (EPS) suspension formulations are described herein. While many of the additives have been used in EPS suspension formulations in the past, specific advantages when the additives are used in EPS suspension formulations containing graphite or carbon black, commonly known as Gray EPS, are identified. The series of products include polyethylenes, alcohols, ethoxylates, carboxylic acids, polymers, copolymers, oxidized polyethylenes, and modified waxes.

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Additives for Expanded Polystyrene Suspension Formulations

New products useful as additives to Expanded Polystyrene (EPS) suspension formulations are described herein.  While many of the additives have been used in EPS suspension formulations in the past, specific advantages when the additives are used in EPS suspension formulations containing graphite or carbon black, commonly known as Gray EPS, are identified.  The series of products include polyethylenes, alcohols, ethoxylates, carboxylic acids, polymers, copolymers, oxidized polyethylenes, and modified waxes.

Application benefits of such additives for Gray Expanded Polystyrene (EPS) include:

·                As an agent to help control bead size and bead size distribution.  All of the products showed varying degrees of efficacy interacting with the other components of the formulation to help control the bead size and bead size distribution.  Selecting the proper additive for the formulation can provide improved yields of beads within the proper size vs. formulations without the additives.  The additives can be used at levels from ~100 ppm up to 5000 ppm based on the weight of the styrene.

·                As a nucleating agent for Gray Expanded Polystyrene (EPS).  All of the products showed varying degrees of efficacy interacting with the other components of the formulation to help control cell size uniformity and structure within Gray EPS beads.  The improved cell structure provides faster maturation and more consistent expansion when the Gray EPS beads are molded.  The additives can be used at levels from ~100 ppm up to 5000 ppm based on the weight of the styrene.

·                As a dispersing agent for graphite or carbon black.   All of the products showed varying degrees of efficacy dispersing graphite and/or carbon black into EPS.  The graphite and/or EPS can be premixed with the additive into a master batch of polystyrene an...