Abstract:
To prevent the deterioration in water-resistant secondary adherence that occurs during prolonged use of a fluoride-containing phosphate conversion coating liquid composition to form a conversion coating on metal surfaces that are at least partly aluminiferous, the aluminum compound-containing sludge produced in the phosphate conversion coating liquid composition as it is used is coagulated and sedimented by adding at least one cationic polymeric coagulant to the sludge-containing phosphate conversion coating liquid composition.
Abstract:
A composition in dry form which can easily undergo dry blending and milling contains biologically active materials and a solid surfactant composed of a combination of an alkyl polyglycoside and an inert carrier selected from the group consisting of silica, talc, a zeolite, magnesium aluminum silicate, calcium sulfate, magnesium carbonate, magnesium oxide, aluminum oxide.
Abstract:
A low-sling, high tack fiber lubricant having a final viscosity of from 50 SUS to 200 SUS characterized in that the lubricant contains: a mineral oil-vehicle; a high molecular weight oil-soluble polymer having a number average molecular weight in the range of from 3,500,000 to 7,500,000 selected from: (i) polyisobutylene homopolymer; (ii) a polymer of straight chain alpha-monoolefins/having 4 to 20 carbon atoms; and (iii) a copolymer of isabutylene and straight chain alpha-monoolefin; a low molecular weight oil-soluble polyisobutylene homopolymer having a number average molecular weight in the range of from 500,000 to 3,000,000 and an emulsifier or mixture of emulsifiers wherein the ratio by weight of component (b) to component (c) is from 9:1 to 1:9, wherein said lubricant is prepared by a process comprising selecting a mineral oil vehicle having a viscosity from about 5 to 50 SUS lower than the final viscosity of the lubricant; admixing components (b), (c) and (d) into the mineral oil vehicle to provide an admixture having viscosity of from 5 to 30 SUS above the final viscosity of the lubricant, and applying controlled low shear force to the admixture containing the polyisobutylene additive to reduce viscosity of the admixture to the final viscosity of the lubricant.
Abstract:
The incorporation of polyurethane poly(meth)acrylate(s) into a composition comprising epoxy resin(s), multifunctional (meth)acrylate ester(s) of a polyol which forms an ester with (meth)acrylic acid, and a polyamine curing agent results in cured epoxy resin(s) that are hard and nonbrittle with high impact resistance and finds use as an adhesive or coating.
Abstract:
A self-dispersing curable epoxy composition is prepared upon contacting an epoxy resin with a polyoxyalkyleneamine having a molecular weight of from about 3,000 to about 15,000 in a ratio of about 0.001 to 0.060 reactive equivalents of polyoxyalkyleneamine to about 1.0 reactive equivalents of epoxy resin. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.
Abstract:
A single generally cylindrical foam cell (10) having openings (12, 14) at both ends is provided wherein an interchangeable foam cell insert (20) having varied geometry is longitudinally disposed within the foam cell (10). The foam cell insert (20) is provided with a plurality of centralizer walls (22, 22') extending into the foam cell (10) with an agitator member (26) being carried by the centralizer walls (22, 22'). Foamable liquid medium is introduced into the foam cell (10) and recirculated therethrough to form a dynamic fluid-flow system. As the liquid medium passes through both the foam cell (10) and the foam cell insert (20), it comes into contact with the agitator member (26) carried by the centralizer walls (22, 22') of the foam cell insert (20) forming foam which accumulates in the foam cell (10). After a sufficient amount of foam is formed, a defoaming or antifoaming agent is introduced into the foam cell (10), and its effect on the level of foam present in the foam cell is measured.
Abstract:
A process for coating metal surfaces in which an uncured resin coating is formed on the surface of a metal by contacting the metal surface with an autodepositing coating composition that contains acid, oxidizing agent, and water-dispersible or water-soluble organic film-forming resin, and the uncured coating is thereafter dried, produces a strongly adherent, highly corrosion-resistant autodeposited coating when the uncured coating is brought, prior to its drying, into contact with an aqueous solution that has a pH adjusted to 7 to 11 and that contains at least one selection from the following inorganic acids and salts thereof: molybdic acid, tungstic acid, polyphosphoric acid, and polysilicic acid.
Abstract:
Provided are epoxy curing agents comprising the reaction product of reactants consisting essentially of an alkylene polyamine having less than about 12 carbon atoms, an aromatic mono-glycidyl ether having less than about 18 carbon atoms, and a diglycidyl ether of an aromatic diol having an average degree of oligomerization of less than about 3.5, wherein the ratio of primary amine equivalents of said alkylene polyamine to the total epoxide equivalents of said aromatic glycidyl ether and said diglycidyl ether of an aromatic diol is not essentially less than one, and the ratio of epoxide equivalents of said aromatic mono-glycidyl ether to epoxide equivalents of said diglycidyl ether of an aromatic diol is greater than one. The reaction product is preferably employed as a curing agent for an aqueous epoxy resin in a two component coating system wherein said curing agent, essentially free of acids, is mixed with an aqueous epoxy resin emulsion and then the resulting mixture is applied as a continuous coating to a rigid substrate, e.g. as an industrial maintenance coating.
Abstract:
Provided are compounds having formula (I), wherein R and R are independently selected from the group consisting of a hydrogen atom, an aliphatic group, a hetero-aliphatic group, an aromatic group, and a heterocyclic group, provided that R and R may together form a divalent radical selected from the group consisting of an aliphatic radical and hetero-aliphatic group; each R is independently selected from the group consisting of an aliphatic group, a hetero-aliphatic group, an aromatic group, and a heterocyclic group; R is selected from the group consisting of an aliphatic group, a hetero-aliphatic group, an aromatic group, and a heterocyclic group; and n is an integer from 0 to 5. Also provided are polymerizable compositions containing such compounds and a method of coating a substrate which uses such polymerizable compositions.
Abstract:
Latexes are thickened by compounds of the formula (I): R -(O-A)a-B -R -(B -R )d-(B -(A'-O)b-f-(A'-B )f-R -(B -R )e)n-B -(A''O)c-R , wherein: R and R are monovalent hydrophobic groups independently selected from the group consisting of an aliphatic group, a substituted aliphatic group, an aromatic group, and a substituted aromatic group; R and R are independently selected from the group consisting of aliphatic, substituted aliphatic, aromatic, or substituted aromatic radicals, each radical being divalent or trivalent; R and R are independently selected from hydrogen, lower alkyl and lower aralkyl; B , B , B , B , B , and B are linking groups independently selected from the group consisting of an oxygen atom, carboxylate group, an amino group and an amido group, each of a, b, c, d, e, f, and n are integers, wherein each of a and c are independently any integer from greater than 20 to about 200; b is any integer from greater than 20 to about 450; d, e, and f are 0 or 1; and n is any integer from 1 to about 5; and each of A, A', and A'' is independently an ethylene, 1,2-propylene, 1,2-butylene unit or combinations thereof.