Method for forming tetraoxy-silane derived antiwear films and lubricating oil compositions therefrom
AssigneeCherron Oronite Company LLC
InventorsElaine S. Yamaguchi, Kam-Sik Ng
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Abstract
Disclosed is a method for forming an antiwear film on an internal engine component comprising: contacting a surface of an internal wearing component of the engine with a tetra-functional hydrolyzable silane compound of the general formula Si—X4 or hydrolysis product thereof, wherein X is independently selected from the group consisting of hydroxyl, alkoxy, aryloxy, acyloxy, amino, monoalkyl amino and dialkyl amino; and hydrolyzing and condensing the tetra-functional silane to thereby form a film. Also disclosed are mixed silane films and the products produced by these methods.
Claims23
A method for forming an antiwear film on an internal engine component comprising:
- contacting a surface of an internal wearing component of the engine with a tetra-functional hydrolyzable silane compound selected from the group consisting of tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetraisopropoxysilane, tetrabutoxysilane, tetraisobutoxysilane, tetrakis(methoxyethoxy)silane, tetrakis(methoxypropoxy)silane, tetrakis(ethoxyethoxy)silane, tetrakis(methoxyethoxyethoxy)silane, trimethoxyethoxysilane, dimethoxydiethoxysilane, triethoxymethoxysilane, tetra-(4-methyl 2 pentoxy)silane and tetra-(2-ethylhexoxy)silane;
- and hydrolyzing and condensing the tetra-functional silane to thereby form a film.
A method for forming an antiwear film on an internal engine component comprising:
- contacting a surface of an internal wearing component of the engine with a tetra-functional hydrolyzable silane compound of the formula I or a hydrolysis product thereof:
- wherein each R is independently a C1-20 hydrocarbyl group selected from the group consisting of straight and branched chain alkyl, cycloalkyl, alkcycloalkyl, aryl, alkaryl, arylalkyl and substituted hydrocarbyl groups having one or more substituents selected from hydroxy, alkoxy, ester or amino groups;
- each R1 is independently straight and branched chain alkyl, cycloalkyl and aryl;
- and a is an integer of 0 to 4, wherein at least one R is a substituted hydrocarbyl group.
Dependencies are inferred from the claim text.