Method of reducing fumes from a vessel of molten asphalt

US6130276A · kind A · utility

Assignee

• Owens-Corning Fiberglas Technology, Inc. · US

Inventors

• Donn R. Vermilion · Newark, US
• Michael R. Franzen · Bocholt, DE
• Richard T. Janicki · Benton, US
• David C. Trumbore · Bourbonnais, US
• Jay W. Keating · Tinley Park, US
• Jorge A. Marzari · Bolingbrook, US

Key dates

• Filing date: Mar 12, 1999
• Grant date: Oct 10, 2000
• Expiry date: Mar 12, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31815
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

In a method of melting asphalt in a vessel, the molten asphalt normally emitting fumes, 0.2 weight percent to 6 weight percent of a polymer is added to the asphalt to reduce the visual opacity of the fumes by at least 25% over the same asphalt without the polymer. In another embodiment, the total emissions of benzene soluble suspended particulates is reduced by at least 15% over the same asphalt without the polymer. Preferably, the added polymer has a melt flow index of from 15 grams/10 minutes to 95 grams/10 minutes, and the added polymer reduces the visual opacity of the fumes by forming a skim on the upper surface of the molten asphalt.