Corrosion inhibiting composition for treating asbestos containing materials

Patent · Tue Apr 21 00:00:00 EDT 1998

OSTI ID:871478

Hartman, Judithann Ruth ^[1]

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1. Columbia, MD

A composition for transforming a chrysotile asbestos-containing material into a non-asbestos material is disclosed, wherein the composition comprises water, at least about 30% by weight of an acid component, optionally a source of fluoride ions, and a corrosion inhibiting amount of thiourea, a lower alkylthiourea, a C.sub.8 -C.sub.15 alkylpyridinium halide or mixtures thereof. A method of transforming an asbestos-containing building material, while part of a building structure, into a non-asbestos material by using the present composition also is disclosed.

• Research Organization: Associated Universities, Inc., Upton, NY (United States)
• DOE Contract Number: AC02-76CH00016
• Assignee: W. R. Grace & Co.-Conn. (New York, NY)
• Patent Number(s): US 5741358
• Application Number: 08/721,853
• OSTI ID: 871478
• Country of Publication: United States
• Language: English

Related Subjects

corrosion
inhibiting
composition
treating
asbestos
containing
materials
transforming
chrysotile
asbestos-containing
material
non-asbestos
disclosed
comprises
water
30
weight
acid
component
optionally
source
fluoride
amount
thiourea
alkylthiourea
-c
15
alkylpyridinium
halide
mixtures
method
building
structure
non-asbestos material
composition comprises
asbestos-containing material
comprises water
chrysotile asbestos-containing
acid component
chrysotile asbestos
containing material
corrosion inhibiting
treating asbestos
building material
containing materials
/106/423/427/428/588/