Compositions – Leather or fur treating
Patent
1990-10-17
1992-09-15
Lechert, Jr., Stephen J.
Compositions
Leather or fur treating
102301, 102313, C09N 300
Patent
active
051475669
ABSTRACT:
A high speed silent cracking agent of the liquid-soaked type consists of a cartridge of solid cracking agent and a solution of liquid inhibitor catalyst. The cartridge of solid cracking agent contains about 50 to about 90 percent by weight of quicklime, about 1 to about 4 percent by weight of borax, about 8 to about 30 percent by weight of vermiculite, 0 to 2 percent by weight of aluminum powder, and 0 to about 14 percent by weight of sulphur based on the total weight of said solid cracking agent. The solution of liquid inhibitor catalyst contains about 0.05 to about 0.40 percent by weight of caustic soda, about 0.01 to about 0.50 percent by weight of quartz, about 0.04 to about 0.30 percent by weight of ammoniation agent and about 99.8 to about 98.8 percent by weight of water, or contains about 0.40 to about 1.80 percent by weight sodium silicate, about 0.05 to about 0.40 percent by weight of ammoniation agent and about 99.55 to about 97.8 percent by weight of water based on the total weight of said solution. The expansion pressure of the silent cracking agent is about 70 to about 130 MPa and the cracking time is about 3 to 60 minutes. It can be widely used in the fields of rock quarrying and processing, highway constructing, concrete foundation demolishing, smooth blasting in tunnels and shafts, and coal mining.
REFERENCES:
patent: 456579 (1986-01-01), Fujioka et al.
Chen Shichao
Lai Hezhang
Liu Tianyin
Furong Mineral Bureau
Lechert Jr. Stephen J.
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