Abstract:
Compositions and methods for cleaning, solvating, and/or removing plastic resins and polymers or other contaminants from manufactured articles or manufacturing equipment, particularly in the production of optical lenses. The compositions contain at least one nitrogen containing compound as well as other optional solvents and additives. The compositions can be contacted with a surface to be cleaned in a number of ways and under a number of conditions depending on the manufacturing or processing variables present.
Abstract:
Azetrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.
Abstract:
The present invention is a tetrahydrofurfuryl alcohol and limonene or terpineol cleaning agent and method for formulating and/or using the cleaning agent. This cleaning agent effectively removes both polar and nonpolar contaminants from various electrical and mechanical parts and is readily used without surfactants, thereby reducing the need for additional cleaning operations. The cleaning agent is warm water rinsable without the use of surfactants. The cleaning agent can be azeotropic, enhancing ease of use in cleaning operations and ease of recycling.
Abstract:
A solvent composition for parts cleaning is improved by addition of an additive composition comprising at least one aromatic, aliphatic or alkaryl sulfonic acid or salt thereof or an esterified polyol or an alkyl phenol formaldehyde resin which has been modified to include alkoxy solubilizing groups. The additive composition provides agglomeration and accelerated settling of contaminant particles in the solvent cleaning composition.
Abstract:
A cleaning solvent composition comprising at least one member selected from the group consisting of 1H,2H/-hexafluorocyclobutane, 1,2,2,3,3-pentafluorocyclobutane, 1,2,2,3,3,4,4,5,5-nonafluorocyclopentane, 1H/2H-octafluorocyclopentane, 1H,2H/-octafluorocyclopentane, 1H/3H-octafluorocyclopentane, 1H,4H,2H/-heptafluorocyclopentane, 1H,2H/4H-heptafluorocyclopentane, 1H,2H,4H/-heptafluorocyclopentane, 1H,3H/2H-heptafluorocyclopentane, 1H,2H/3H-heptafluorocyclopentane and 1H,2H/3H-heptafluorocyclopentane group; a method of cleaning or drying articles with the same; and use thereof as a detergent.
Abstract:
The present invention is drawn toward compositions and methods of using same, the compositions comprising (in diluted form): a) an effective amount of a phenyl substituted alkyl alcohol having a water solubility of at least 0.1 weight percent (preferably benzyl alcohol); b) a coupler; and c) water, wherein the amount of the coupler is at least 3.0 times the amount necessary to completely solubilize the phenyl substituted alkyl alcohol in the water. Preferred couplers are the salt of a monofunctional water-soluble amine and an organic acid comprising at least one water-insoluble organic acid having from 6-10 carbon atoms. Methods of removing coatings such as standard urethane/acrylic sealer finishes from floors using the inventive compositions are also described.
Abstract:
A solution for use in removing the double sided adhesive tape from mouldings used on motor vehicles and the like. The solution comprises (a) 50-94 % by weight of a refined petroleum product which is a low boiling point distillate of paraffinic, naphthenic and aromatic fractions, (b) 5-50 % by weight of oil of terpentine, (c) 1-30 % by weight of a surface active agent, and (d) less than 1 % by weight of one or more optional additives selected from deodorizing agents, perfumes, colourants, and inert liquid extenders.
Abstract:
Disclosed are formulations for producing chemical solvent comprised of propylene glycol methyl/ether acetate which admixtures can be employed to clean a surface and which can be applied to cloths for the cleaning operation yet alleviate problems with solvent evaporation into the atmosphere. The figure shows and sets out a method for utilizing and disposing of cloths impregnated with such chemical formulations (11) whereupon the used cloths are enclosed first in polyethylene bags (23) then in a series of metal drums and containers (25, 27, 29, 31 and 33) and finally disposed of in an incinerator or kiln.
Abstract:
The invention relates to a method and composition for cleaning articles made of, for example, metal, ceramic or glass. The composition of the invention comprises: one or more C9-C12 aromatic hydrocarbons of formula (I), wherein R is CH3, R2 is hydrogen or a straight-chained or branched lower alkyl, and R3 is hydrogen or a C1-C5 straight-chained alkyl; and a C7-C10 organic polar component, wherein the solvent composition comprises from about 99 to about 1 weight percent of the aromatic hydrocarbon and from about 1 to about 99 weight percent of the organic polar component. The invention also relates to a method of cleaning a dirty article, comprising the steps of: contacting the dirty article with a composition of the invention, the contact resulting in a solvent residue being deposited on a surface of the article; and removing the solvent residue by contacting the article with an aqueous medium.
Abstract:
A method and device for cleaning, in which an object to be cleaned is washed or rinsed with cleaning or rinsing agent constituted mainly of non-aqueous solvent and hydrophilic solvent and is dried after removing cleaning or rinsing agent sticking to the surface of said object with the application of cleansing agent constituted mainly of perfluorocarbon or vapor thereof. In another way, the object, after washed with aqueous cleaning agent or in water, is cleaned and dried with the application of cleaning agent constituted mainly of perfluorocarbon or vapor thereof. Cleansing agent constituted mainly of perfluorocarbon or vapor thereof is also applicable to cleaning and rinsing of an object to be cleaned.