Abstract WHEREIN R1 is methyl and wherein R2 is chosen selectively to be either methyl or phenyl, so that the resulting polymer has a phenyl:methyl ratio of between about 0.30:1.0 and about 0.85:1.0 and a viscosity at 77* F. of from about 50 to about 1,000 centistokes. The fluid may be applied in the form of a dilute aqueous dispersion, or as a dilute solution in a suitable solvent such as petroleum naphtha. The disclosure solves a persistent problem in die casting of brass alloys, wherein lubrication of the steel die or mold is generally difficult. In accordance with the disclosure, the surfaces of the mold to come in contact with the molten brass are coated with a film of a phenyl-methyl silicone fluid which is a linear polymer having repeating units of the element
Inventors
👤 E Scott
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-04 15:10
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
12 words
The process in accordance with claim 1 wherein said metal is steel.
Claim 2
Dependent Claim
18 words
The process in accordance with claim 1 wherein said silicone fluid has a phenyl-methyl ratio of about 0.75.
Claim 3
Dependent Claim
34 words
The process of claim 1 wherein said silicone fluid is brought to said walls of said mold in a water carrier in the form of an emulsion of said silicone fluid and said water.
Claim 4
Dependent Claim
32 words
The process in accordance with claim 4 wherein the weight ratio of said silicone fluid to said water in said emulsion is within the range of from about 1:6 and about 1:60.
Claim 5
Dependent Claim
25 words
The process in accordance with claim 1 wherein said silicone fluid is brought to the walls of said mold in a liquid hydrocarbon solvent carrier.
Claim 6
Dependent Claim
28 words
The process in accordance with claim 6 wherein the ratio of said silicone fluid to said solvent is within the range of from about 1:6 to about 1:10.