| 摘要 |
<p>1422462 Resinous waxy composition LAKE CHEMICAL CO 7 March 1973 11067/73 Headings C3B C3P and C3R [Also in Division C5] A substantially homogeneous composition which is solid at room temperature and retains its form and shape when held in the hand and is suitable for filling in scratched or otherwise damaged surface, consists of for substantially the whole (a) an organic resinous film forming material, (b) an organic solvent or mixture of organic solvents having a B.P. of from 120- 300‹ C. and in which the film forming material is soluble at room temperature and (c) a waxy material which is substantially insoluble in the solvent at room temperature but soluble therein at elevated temperature, the ingredients (a), (b) and (c) being present respectively in amounts of from 3-80%, 2-25% and 10-95% by weight of the total homogeneous composition. Film forming materials used in examples are phenolic, acrylic and polyurethane resins and also mixtures of phenolic resins with polymerized tung oil alone or with an epoxy resin. Others are normal including cellulosic materials. Suitable waxy materials include paraffin, animal and vegetable waxes, higher fatty acids and soaps thereof, and hydrogenated fatty oils; carnauba and candelilla waxes are preferred. Named solvents include hydrocarbons, alcohols, esters, ethers, ketones and nitro-benzene. There may also be present a small portion, preferably up to 10%, of supplemental ingredients examples being given of pigments, fillers, plasticizers, drying oil, acids and esters thereof, drying accelerators and oxidation retardants. The composition may be used in pencil or stick form in repair of metal, glass, ceramic, wood, plastic and like surfaces.</p> |
