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Title: Aqueous rubberized coal tar emulsion

Patent ·
OSTI ID:5723273

An aqueous rubberized coal tar emulsion composition especially suitable for coating and sealing bituminous substrates containing asphalt such as asphalt pavement and the like, the coal tar emulsion composition comprising a major portion of commercial coal tar emulsion and water admixed with a small amount of a carboxylated butadiene/styrene/acid copolymer latex having a particular particle size. The emulsion composition may additionally include a fine aggregate filler material such as sand. The coal tar emulsion composition according to the invention is of a thixotropic nature and has the ability to maintain the fine aggregate when added and mixed therein in a homogeneous-like suspension. The emulsion composition when spread on an asphalt surface exhibits a high degree of spreadability and provides a sealing coating that has a long life.

Assignee:
Reichhold Chemicals, Inc.
Patent Number(s):
US 4544690
OSTI ID:
5723273
Resource Relation:
Patent File Date: Filed date 27 Jul 1983; Other Information: PAT-APPL-517706
Country of Publication:
United States
Language:
English