Abstract:
Proposed herein are antifouling coating compositions containing bis-trialkylstannyl derivatives of chlorinated polycyclic dicarboxylic acids, of the general formula ##STR1## wherein R is a lower alkyl, R'=H,CH.sub.3, n=0,1, which are obtained by a condensation reaction of anhydrides of the respective dicarboxylic acids with hexaalkyldistannoxanes R.sub.3 SnOSnR.sub.3, wherein R is a lower alkyl, in the medium of an organic solvent.
Abstract:
The tendency of dispersions containing triorganotin fluorides in organic liquids to agglomerate is avoided by using as the dispersion medium specified organic liquids in combination with from 0.5 to 10% based on the weight of the dispersion, of specified inorganic compounds. The choice of both organic liquid and inorganic compound is critical to achieving long-term stability of the resultant dispersion.
Abstract:
Disclosed are the usage, preparation, and evaluation of marine antifouling quaternary halide salts containing a cation portion which includes a trialkyltin ether moiety linked to a carbon atom at least two carbon atoms removed from the quaternized nitrogen atom. Taught as providing exceptional marine fouling inhibition are the quaternary salts of benzyl bromide and tertiary amines containing a tributylstannyl ether moiety at least two carbon atoms removed from the amino nitrogen atom with illustrated specific examples including the quaternary salts of benzyl bromide and 2-dimethylamino-2-methyl-1-propyl tributylstannyl ether, benzyl bromide and 1-dimethylamino-2-propyl tributylstannyl ether, benzyl bromide and 2-[N-pyrrolidinyl]ethyl tributylstannyl ether, and benzyl bromide and 2-diisopropylaminoethyl tributylstannyl ether. For antifouling purposes the quaternary salt is blended or dissolved in a resinous polymer component of a marine paint composition applied to an article's surface subsequently to be immersed in ocean water.
Abstract:
Pesticidal and anti-inflammatory cyclopropyl compounds, cyclopropyl intermediates for the preparation of pesticidal compounds, especially chrysanthemic acid-like intermediates, and a process for preparing same.
Abstract:
1. AN IMPROVED LIQUID COATING COMPOSITON COMPRISING BETWEEN 20 AND 40%, BASED ON THE WEIGHT OF THE COMPOSITION, OF A SOLUBILIZED CROSSLINKABLE HYDROCARBON RUBBER CONTAINING AN AVERAGE OF AT LEAST ONE CARBON-CARBON DOUBLE BOND PER MOLECULE OF RUBBER, BETWEEN 1 AND 10%, BASED ON THE WEIGHT OF SAID RUBBER, OF A CROSSLINKING CATALYST, AN OXIDIZING AGENT FOR THE CATALYST AND BETWEEN 5 AND 15%, BASED ON THE WEIGHT OF SAID COATING COMPOSITION, OF ATRIORGANOTIN COMPOUND WHEREIN THE IMPROVEMENT RESIDES IN THE PRESENCE OF A LIQUID ISOBUTYLENE-ISOPRENE COPOLYMER RUBBER AND AT LEAST ONE LIQUID TRIORGANOTIN COMPOUND EXHIBITING THE GENERAL FORMULA R3SNX WHEREIN EACH R IS INDIVIDUALLY SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAINING 3 AND 4 CARBON ATOMS AND PHENYL RADICALS, AND X REPRESENTS A PHENOXY RADICAL WHICH MAY CONTAIN AT LEAST ONE INERT SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF HALOGEN ATOMS AN D ARYL HYDROCARBON RADICALS, WITH THE PROVISO THAT THE CONCENTRATION OF THE SOLUBILIZED RUBBER IS BETWEEN 40 AND 80%, BASED ON THE COMBINED WEIGHT OF RUBBER AND SOLVENT, AND THE WEIGHT RATIO OF OXIDIZING AGENT TO CATALYST IS BETWEEN 2:1 AND5:1, RESPECTIVELY.
Abstract:
The present invention relates to an aquatic organism inhibiting composition which comprises at least one N-arylmaleimide having the formula ##STR1## wherein X.sub.1 and X.sub.2 are the same or different and respectively represent hydrogen or a halogen atom; and Y represents a halogen atom or an alkyl or a lower alkoxy group and n is 0 or an integer of 1 to 3, and at least one organo-tin compound selected from the group consisting of bis(tri-n-butyl tin)mesodibromosuccinate, triphenyl tin monochloroacetate, triphenyl tin hydroxide and bis(tri-n-butyl tin) oxide as active ingredients.
Abstract:
A process for microencapsulating water-immiscible chemicals is disclosed which comprises mixing a colloidal solution of gelatin Type A and gum acacia with an emulsion or slurry of the water-immiscible chemical, both of which are prepared and mixed at a temperature above about 50.degree. C., and allowing the mixture to cool so that the droplets or particles of water-immiscible chemical are encapsulated with a macromolecular membrane of a complex coacervate of gelatin and gum acacia. Anti-fouling marine paints capable of sustained release of anti-fouling agent are prepared by adding microcapsules of anti-fouling agents to a marine paint vehicle.
Abstract:
Aqueous coating compositions that inhibit the attachment and growth of barnacles and other fouling organisms on submerged surfaces are comprised at least in part of an emulsified film-forming, water-insoluble polymer, an effective amount of a triphenyltin derivative and water. Pigments, fillers, dispersing acids for the pigment and surface tension modifiers may also be present in addition to other conventional aqueous latex paint additives.
Abstract:
An antifoulant coating composition and preparation method in which the final composition is composed of two Components A and B mixed immediately before the composition is applied, and usually an inert filler introduced at least in part via Component A. The active ingredient of Component A is a base formed of coal-tar pitch or equivalent and epoxy resin. The active ingredients of Component B are a curing agent for the epoxy resin and a solid organotin toxicant. Component B may be either a slurry of needle-like crystals of toxicant, or the toxicant may be dissolved in a suitable solvent. In the latter case the toxicant precipitates as needle-like crystals when Components A and B are mixed. The invention produces a composition of a viscosity which makes it easy to apply.