Pigment for sensing gas leakage and process for producing the sa

Details Pigment for sensing gas leakage and process for producing the sa Pigment for sensing gas leakage and process for producing the sa

1998-02-18

1998-12-15

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106440, 106442, 48193, 252 68, C09C 136

Patent

active

058490736

ABSTRACT:
A pigment for sensing gas leakage can be produced by adding at least one of salts of platinum group metals to a slurry of particulate substrate, neutralizing the resultant mixture to deposit at least one of oxides, hydroxides and hydrated oxides of platinum group metals on the surfaces of said particulate substrate, and if necessary, further adding to said slurry at least one of compounds of aluminum, silicon, titanium, zinc, zirconium, tin, antimony and cerium, neutralizing the resultant mixture to deposit at least one of compounds such as oxides, hydroxides and hydrated oxides of aluminum, silicon, titanium, zinc, zirconium, tin, antimony and cerium, on the particles. The pigment for sensing gas leakage allows any combustible gas such as hydrogen, carbon monoxide, acetylene, methane and the like leaking from chemical reaction apparatuses and various factories using reducing gases to be definitely and conveniently detected by applying the pigment onto the surfaces of the outer walls and pipes of chemical reaction apparatuses as well as the surfaces of the rooms of the factories.

REFERENCES:
Patent Abstracts of Japan vol. 13, No. 134 (C-581) 4 Apr. 1989 & JP-A-63-296-842 (Tanaka Kikinzoku) 2 Dec. 1988.
Database WPIL, Section Ch, Week 9246, Derwent Publications Ltd., London, GB; AN 92-378269 & JP-A-4 279 681 (Akuto Res. and Chubu Denryoku) 5 Oct. 1992.
Patent Abstracts of Japan vol. 15, No. 256 (C-845) 28 Jun. 1991 & JP-A-30 84 066 (Toray Ind.) 9 Apr. 1991.
Database WPI, Section Ch, Week 7741, Derwent Publications Ltd., London GB; AN 77-73404Y & JP-A-52 104 283 (Kawasaki Jukogyo) 1 Sep. 1987.

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