C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
57/12
C09K 3/14 (2006.01) B24B 37/04 (2006.01) C08J 3/075 (2006.01) C08K 3/00 (2006.01) C08K 3/14 (2006.01) C08K 13/02 (2006.01)
Patent
CA 1097509
ABSTRACT OF THE DISCLOSURE A composition is disclosed for lapping or sharpening various cutting edges with primary emphasis on reel type lawn- mowers, especially those for cutting golf course greens and other important turf surfaces. The composition is a permanent suspension of a lapping gel and a grinding grit. Contents of the lapping gel include a carboxy vinyl polymer thickener, a neutralizing base, water and a surfactant as essential ingred- ients, though a concentrated gel may be produced and the water added later. Additionally, other ingredients may be included to improve shelf life, viscosity, stabilize freeze- thaw conditions and the like. Representative lapping composi- tions according to the present invention comprise 0.18 to 0.75 weight percent carboxy vinyl polymer, a sufficient amount of a base to neutralize the carboxy vinyl polymer and provide a pH in a range of about 7 to 9, at least about 0.08 weight percent surfactant, 1.2 to 2.4 weight percent of a humectant such as glycerine, a minor amount of a preservative for the surfactant such as formalin; 35 to 70 weight percent of a grinding grit and the balance water.
244951
Swabey Ogilvy Renault
Thrower Herbert T. Jr.
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