Abstract: A halogen-free, flame retardant polyester composition comprises, based on the total composition,

Abstract: The present invention provides resin compositions comprising a thermoplastic resin, at least one phosphoramide having a glass transition point of at least about 0° C. preferably of at least about 10° C., and most preferably of at least about 20° C.; and at least one adjunct flame retardant. The present invention also relates to articles made from the resin compositions. The present invention also provides methods to make the resin compositions having improved heat properties over compositions known in the art.

Abstract: To provide a flame-retardant thermoplastic polyester resin composition having excellent flame-retarding properties even without any halogen flame retardant, and also good mechanical properties and moldability and an excellent heat residence stability. The composition comprises (A) 100 parts by weight of a thermoplastic polyester resin, (B) 5 to 40 parts by weight of a specific phosphinic acid salt and/or a specific diphosphinic acid salt and/or a polymer thereof, and (C) 1 to 35 parts by weight of a nitrogen-containing organic substance.

Abstract: The present invention relates to polyamide/polymer blends having a morphology enhancing reagent selected from a phosphorous containing compound such as a hypophosphite salt. Significant physical effects are seen in Tensile strength as well as Vicat softening points. The blends having polyamide and a polymer selected from, for example, a neutralized ethylene copolymer, and the phosphorous containing reagent are useful in producing molded parts and other fabricated parts requiring high strength and toughness. Molded parts produced from such blends also have high gloss, high abrasion/scratch resistance and good high temperature properties.

Abstract: Provided are a water resistant composition comprising a uniform mixture of (A) at least one of modified polyvinyl alcohol containing either from 1 to 20 mol % of &agr;-olefin units with not more than 4 carbon atoms, from 0.01 to 1 mol % of silyl groups, or from 1 to 20 mol % of &agr;-olefin units with not more than 4 carbon atoms and from 0.01 to 1 mol % of silyl groups and (B) an organotitanium compound having a chelating ligand, in a blend ratio of component (A) to the component (B) between 99.99/0.01 and 60/40 by weight; a coating agent comprising the composition; a thermal recording material having a coat layer of the composition; and an ink-jet recording material having an ink-absorbing layer of the composition.

Abstract: Disclosed is a process for producing thermally stabilized styrenic polymers and products produced thereby wherein a pre-formed styrenic polymer is functionalized with a bifunctional Friedel-Crafts-type alkylation or acylation agent to yield a functionalized styrenic polymer. The functionalized polymer is admixed with a Friedel-Crafts-type catalyst, preferably a phosphate ester, and optionally a base, such that the functionalized polymer will experience inter- and intramolecular cross-linking reactions at elevated temperatures, thereby stabilizing the polymer from further thermal degradation.

Abstract: Aluminum salts of alkylhydroxymethylphosphinic acids are prepared by reacting phosphonous acids with aluminum hydroxide or paraformaldehyde or trioxane or mixtures thereof in water at 110 to 250° C. under pressure. The resulting aluminumphosphinates are incorporated into polymers, in particular into polyesters, and have a flame retardant action therein.

Abstract: The present invention relates to cyclic phosphazene azides and their use in a process for producing a rheology modified polymer which comprises contacting a polymer with a cyclic phosphazene azide at a temperature which is at least the decomposition temperature of the cyclic phosphazene azide. When the cyclic phosphazene azide reacts with the polymer, at least two separate polymer chains are advantageously joined and the molecular weight of the polymer chain is increased.

Abstract: A composition providing stain resistance to stone, masonry and other surfaces is provided comprising a mixture of a fluoroalkyl phosphate and a fluoroacrylate polymer.

Abstract: The present invention provides resin compositions comprising a thermoplastic resin, at least one phosphoramide having a glass transition point of at least about 0° C., preferably of at least about 10° C., and most preferably of at least about 20° C.; and at least one adjunct flame retardant. The present invention also relates to articles made from the resin compositions. The present invention also provides methods to make the resin compositions having improved heat properties over compositions known in the art.

Abstract: Flame-retardant thermoplastic molding materials containing A) at least one polyphenylene ether, B) at least one vinylaromatic polymer, and C) at least one flameproofing agent furthermore comprise D) as an antidrip agent, a high molecular weight polymer based on acrylamide having a viscosity of more than about 1.5 mpas, measured in 0.1% strength aqueous solution at 25° C., and are used for the production of fibers, films and moldings.

Abstract: Flame-retardant thermoplastic molding materials containing A) at least one polyphenylene ether and B) at least one vinyl aromatic polymer, comprise C) as a flameproofing agent, a mixture of C1) at least one oligophosphonate or oligophosphate compound and C2) at least one phosphine oxide.

Abstract: A thermoplastic molding composition comprises, in each case based on the total of A to E,at least 3% by weight, but not more than 30% by weight, of a polyphenylene ether A,at least 10% by weight, but not more than 65% by weight, of an impact-modified styrene polymer B,at least 30% by weight of a (standard) styrene polymer C which is not impact-modified,from 0.05 to 5% by weight of a free-radical generator D,from 1 to 20% by weight of a phosphorus-containing flame retardant E, in particular an organophosphorus compound, such as triphenyl phosphate or triphenyl phosphine oxide.

Abstract: Thermoplastic molding compositions compriseA) from 30 to 97% by weight of a polyester,B) from 1 to 30% by weight of melamine cyanurate,C) from 1 to 30% by weight of at least one phosphorus-containing flame retardant which contains phosphorus in the valence state -1, -2 or -3,D) from 0 to 60% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to D) is 100%.

Abstract: The present invention relates to a flame-retardant thermoplastic resin composition comprising the following components (A) to (D):(A) 50 to 80 parts by weight of an aromatic polycarbonate resin;(B) 5 to 40 parts by weight of a rubber-reinforced thermoplastic resin prepared by graft-polymerizing monomer components comprising an aromatic vinyl monomer, a vinylcyanide monomer and optionally other copolymerizable vinyl-based monomers, with a rubber polymer, the amount of said vinylcyanide monomer used being not less than 0.5% by weight and less than 5% by weight based on the total weight of said monomer components;(C) 5 to 30 parts by weight of phosphate represented by the formula (I): ##STR1## wherein R.sup.1 to R.sup.3 are the same or different and are independently an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 20 carbon atoms; and n is 0 or 1,the total amount of the (A), (B) and (C) components being 100 parts by weight; and(D) 0.

Abstract: The present invention relates to a pressure-sensitive adhesive composition containing a non-halogen, non-intumescent flame-retardant system comprising at least one flame-retardant agent with the provisos that the flame-retardant system does not comprise Sb.sub.2 O.sub.3 or does not consist only of alumina trihydrate.

Abstract: The present invention relates to a method for processing a thermoplastic resin composition by extruding the composition through a nickel die to provide an extrudate having a low degree of surface roughness, said composition comprising(A) 100 parts by weight of a thermoplastic resin;(B) 0.01 to 1 part by weight of a hydroxy-functional diorganopolysiloxane having a number average molecular weight of at least 10,000; and(C) 0.001 to 1 part by weight of an organophosphorous compound.

Abstract: A bisphenol compound represented by the following general formula: ##STR1## where R is an alkylene group having 1 to 5 carbon atoms, an alkylidene group having 1 to 5 carbon atoms, a perfluoroalkylene group having 1 to 5 carbon atoms, a perfluoroalkylidene group having 1 to 5 carbon atoms, a SO.sub.2 group or an O group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different alkyl groups, alkenyl groups, aryl groups, alkylaryl groups or aralkyl groups, each having 1 to 25 carbon atoms, can give vulcanization products having a good resistance to hot water, when used as a cross-linking agent for terpolymers of tetrafluoroethylene/perfluoro (alkyl vinyl ether)/ethylenically unsaturated cure site monomer.

Abstract: A fire retarded composition of polyamide, 2 to 5 weight % melamine cyanurate and about 0.07 to about 0.5 weight % phosphorus based on weight of the composition. Phosphorus is preferably provided as a copolyamide containing polymerized carboxyphosphinic acid compound.

Abstract: There are herein disclosed a method for preparing a modified resin which comprises thermal/reaction by the use of a norbornenyl group-containing compound typified by norbornenecarboguanamine or its derivative, a method for preparing an epoxy-modified resin which comprises the step of reacting the above-mentioned modified resin and an epoxide, a flame-retarding method, a thermal stabilization method, a compatibilizing method and a surface modification method which comprise utilizing the modified resin, as well as a coating resin composition and an adhesive resin composition containing the modified resin.According to the preparation methods of the present invention, the deterioration of a material scarcely occurs, and a functional group which is excellent in flame retardancy, thermal stability, compatibility and the like can be introduced to the resins.

Abstract: Disclosed are coatings and materials that resist bacterial colonization and encrustation for use in medical devices and urological applications. The coating includes acidic chelating components, reactively bound to a hydrophilic polyurethane prepolymer along with noble metal combinations or antibacterials. The acidic and noble metal combinations can also be incorporated as additives during plastic molding of medical devices. A continuous antibacterial surfaces are provided by such coatings and materials.

Abstract: Compositions and methods are described wherein a styrenic polymer is rendered flame retardant by incorporation therein before, during or after its formation, a combination of (a) at least one organic phosphorus additive that (i) is halogen-free, and (ii) is composed solely of carbon, hydrogen, and phosphorus, and optionally and preferably one or more of the elements nitrogen, oxygen, and sulfur; and (b) elemental sulfur; in proportions such that (i) the sulfur content from b) is less than 2 percent by weight of the weight of the styrenic polymer plus the weight of a) and b), and (ii) the styrenic polymer plus ingredients a) and b) can provide test specimens which exhibit an LOI of at least 24 if tested in accordance with ASTM Standard Test Method D 2863-87.

Abstract: An active halogen-containing acrylic rubber composition for molding oil filter-gaskets, which comprises an active halogen-containing acrylic rubber and a metal phosphonate represented by the following general formula:RR'nPO(OH)(OM)wherein R is an alkyl group having 1 to 32 carbon atoms, a polyfluorocarbon group or a perfluoropolyether group; R' is an alkylene group having 1 to 6 carbon atoms, a phenylene group, an oxyphenylene group or a sulfonamide group; M is an alkali metal; and n is 0 or 1, gives oil filter-gaskets having a distinguished durable protection against fixation without lowering of high temperature sealability, even if used in engine oil.

Abstract: Low-flammability polyamide molding materials are obtained by admixing calcium or aluminum phosphinates. These salts confer improved flame protection on polyamides compared with other metal salts.

Abstract: The invention relates to flameproofed polycarbonate/ABS blends which are resistant to stress cracking, wherein the polycarbonates are wholly or partly modified by halobutyl rubber blocks.

Abstract: A flame-retardant polyamide that is the polycondensation product of at least one dicarboxylic acid, at least one diamine and a flame-retarding carboxyphosphinic acid monomer, said polyamide comprising between about 0.10% and about 1.0% by weight of phosphorous. The polyamide can be formed into fibers for further fabrication into flame-retardant articles and textiles or directly molded or extruded into shaped articles.

Abstract: An oral composition dentifrice comprising an orally acceptable vehicle, about 5-30% by weight of a siliceous polishing agent, a substantially water-insoluble noncationic antibacterial antiplaque agent, such as 2,4,4'-trichloro-2'-hydroxydiphenyl ether (triclosan), and an antibacterial-enhancing agent which enhances the delivery of said antibacterial agent to, and retention thereof on, oral surfaces, wherein said antiplaque agent is substantially completely dissolved in saliva present during tooth and gum cleaning in a solubilizing agent therefor. The solubilizing agent may be a humectant polyol such as propylene glycol, dipropylene glycol and hexylene glycol; a cellosolve such as methy cellosolve and ethyl cellosolve: a vegetable oil or wax containing at least about 12 carbon atoms in a straight chain such as olive oil, castor oil and petrolatum; or an ester such as ethyl acetate, amyl acetate, glyceryl tristearate and benzyl benzoate.

Abstract: The present invention provides an improved grade of polyimide containing an organic phosphorus compound, a film composed thereof and a method of making the aforementioned film. According to the present invention, it is possible to obtain a polyimide film improved in mechanical strength.

Abstract: Disclosed is a carbonate polymer composition comprising (a) a carbonate polymer having a weight average molecular weight of from about 20,000 to about 40,000 and (b) from greater than about 0.1 to less than about 1.0 weight percent (based on carbonate polymer composition weight) low volatility aromatic phosphate ester compound, and optionally (c) from about 0.001 to about 0.1 weight percent (based on carbonate polymer compositions weight) of an alkali metal salt having a pH of at least about 7. Preferably the low volatility aromatic phosphate ester is selected from the group of aromatic phosphate ester oligomer compounds or haloaryl phosphate compounds. It has been found to be preferable to use a low volatility aromatic phosphate ester which experiences a weight loss of no more than 5 weight percent at 250.degree. C. when heated to a temperature of 500.degree. C. in a thermogravimetric analysis (TGA) at a heating rate of 20.degree. C. per minute, more preferably no more than 40 percent at 300.degree. C.

Abstract: Polycarbonate molding compositions resistant to light aging and exhibiting an improved notched impact strength are disclosed. The compositions which are based on an aromatic polycarbonate, aromatic polyester carbonate or a polyester, contain a redox-catalyzed graft polymer of resin-forming monomers on a rubber, a phosphorus compound and a fluorinated polyolefin.

Abstract: A process for the production of a stabilized polycarbonate which comprises melt-polycondensing an aromatic dihydroxy compound and a carbonic acid diester in the presence of a polycondensation catalyst and then, after the reaction mixture shows an intrinsic viscosity of at least 0.1, adding at least one stabilizer selected from the group consisting of specific compounds having a sulfanate group and a sulfonic acid anhydride group in an amount of 0.01 to 500 ppm of a polycarbonate to be formed, to form a polycarbonate having a desired intrinsic viscosity.

Abstract: A dispersing agent for use in a thermosetting composition, a thermosetting composition containing said dispersing agent, and application thereof to thermosetting composition having no yield point. The dispersing agent acting on mineral fillers and used in filled acrylic or polyester resin-based thermosetting compositions belongs to the family of organophosphates corresponding to the general formula: ##STR1## where: A is a branched or unbranched polyaryl group,x and y are whole numbers between 0 and 100 such that x+y is a whole number greater than 40 but not greater than 100, ##STR2## B and E are independently a branched or unbranched polyaryl group, or an alkyl, aryl, arylalkyl, alkylaryl, alkanoyl, or amine radical, and in B and E, and R.sub.1 and R.sub.2 may be identical or different, x1, y1, x2 and y2 are whole numbers, and the sums x1+y1 and x2+y2 are not greater than 100.

Abstract: There are disclosed a vinyl resin composition which comprises a resin composition comprising a vinyl polymer, a polyamideimide elastomer obtained by reacting a mixture of caprolactam, an aromatic polycarboxylic acid and a specified polyoxyethylene glycol, with 0-0.5 mole of a diamine, etc., per 1 mole of glycol contained in said mixture, the glycol component being present in a proportion of 85-30% by weight in said elastomer and the relative viscosity of the elastomer being at least 1.5 (at 30.degree. C.), and an electrolyte added as desired, and articles molded from the composition.

Abstract: Blends of low molecular weight PBT resin and high molecular weight polyester resin, such as high molecular weight PBT resin, are imparted with excellent melt viscosity stability by the addition of certain phosphorus-containing compounds.

Abstract: An additive package can be used in a single-coat, in situ self-phosphatizing paint to provide a phosphate layer that inhibits corrosion of a surface on which the paint is applied. The additive package includes an amine and a phosphatizing reagent that can be an alkyl-, phenyl- or aryl- ester phosphoric acid or an alkyl-, phenyl- or aryl-phosphonic acid. The reagent and the amine are present in a ratio effective to produce reagent-amine complexes. A paint can include the additive package in addition to a polymer coat forming resin and a cross-linking agent.

Abstract: Polymer composition comprising a copolymer of a vinylaromatic compound, a vinyl cyanide and, optionally, a third monomer which copolymer is grafted on a rubber, a flame-retardant phosphorus compound and a charforming component, characterised in that the polymer composition also comprises a polymer P which comprises 1-100 wt. % monomeric units with the following structure, the wt. % being relative to said polymer P ##STR1## where m=1-5. This polymer composition shows improved flame-retardant properties as a result of synergism with respect to the flame-retardant properties between the charformer and polymer P.

Abstract: According to the present invention there are obtained improved ignition resistant carbonate polymer blends having unexpectedly better combinations of toughness, ignition resistance, processability and stability. In particular the blend comprises a major amount of carbonate polymer, a minor amount of a rubber-modified monovinylidene aromatic copolymer, and an optional rubbery core/shell graft copolymer impact modifier. As ignition resistance additives the blends contain a metal salt of an aromatic sulfur compound, a buffering aromatic sulfur compound, an organophosphorus compound, and a tetrafluoroethylene polymer.

Abstract: A flame-retardant resin composition comprising the following components (A), (B), (C) and (D): (A) 100 parts by weight of a thermoplastic resin comprising 1 a polycarbonate resin, or 2 a polycarbonate resin and a non-polycarbonate resin, (B) from 0.1 to 40 parts by weight of a phosphorus compound, (C) from 0.001 to 40 parts by weight of a boron compound, and (D) from 0.01 to 5 parts by weight of a polyorganosiloxane and/or from 0.001 to 5 parts by weight of a fluorine resin.

Abstract: Aqueous dispersions of fillers and/or pigments contain a dispersant combination of the following composition:A) 40 to 95 by weight of a water-soluble polymer,B) 0 to 60 by weight of a non-ionic alkylene oxide adduct having an average molecular weight of 200 to 100,000,C) 0 to 60% by weight of compounds of the formulae (I), (II) and/or (III) ##STR1## in which R.sub.1 represents an optionally substituted aliphatic, aromatic or araliphatic radical having 1 to 50 C atoms,z in each case independently of one another represents an integer from 1 to 10 andx represents hydrogen, a monovalent metal ion or an optionally substituted ammonium ion andD) 0 to 60% by weight of a compound of the formula (IV) ##STR2## in which Q represents hydrogen, ##STR3## in which Y in each case independently of one another represents hydrogen, a monovalent metal ion or an optionally substituted ammonium ion,R.sub.

Abstract: The present invention relates to a process for the conditioning and/or purification of organic isocyanates bya) mixing organic isocyanates at 20.degree. to 150.degree. C. with 0.001 to 1 mole %, based on the isocyanate, of a silylated acid corresponding to the formulaX-[Si(CH.sub.3).sub.3 ].sub.nwhereinX represents the neutral acid residue obtained by removing the acidic hydrogen atoms from an n-basic acid having a pKa value of at most 3, with the exception of hydrohalic acids andn is an integer from 1 to 3, andb) optionally working up the resulting mixture by distillation after a residence time of at least 5 minutes.

Abstract: The present invention relates to thermoplastic moulding compositions consisting of halogen-free polycarbonates, halogen-free polystyrene and/or halogen-free copolymers of styrene with acrylonitrile, halogen-free phosphorus compounds of the formula I ##STR1## and tetrafluoroethylene polymers, and, if appropriate, other known additives.

Abstract: Self-extinguishing polymeric compositions containing: a) from 90 to 40 parts by weight of a thermoplastic polymer, or a polymer having elastomeric properties and b) 10 to 60 parts by weight of one or more 2,4,6-triamino-1,3,5-triazine compounds salified with an oxygenated acid of phosphorus, wherein at least one of the triamino substituents of the triazine compound are substituted with at least one of the following radicals ##STR1## wherein m=an integer between 2 and 8;p=an integer between 2 and 6;R.sub.8 =H; C.sub.1 -C.sub.8 alkyl; C.sub.2 -C.sub.6 alkenyl; C.sub.q H.sub.2q OR.sub.9 wherein q is an integer between 1 and 4 and R.sub.9 is hydrogen or C.sub.1 -C.sub.4 alkyl; C.sub.6 -C.sub.12 cycloalkyl or alkylcycloalkyl;R' is H; C.sub.1 -C.sub.8 alkyl; C.sub.2 -C.sub.6 alkenyl; C.sub.6 -C.sub.12 cycloalkyl or alkylcycloalkyl; C.sub.1 -C.sub.4 hydroxyalkyl, or ##STR2## is replaced by a heterocyclic radical bound to the alkyl chain through the nitrogen atom.

Abstract: An improved, stable rosin ester tackifier consisting essentially of an adduct of rosin and a polyhydric alcohol selected from the group consisting of trimethylolpropane, trimethylolethane, and mixtures thereof, and hot melt adhesive compositions consisting essentially of said tackifier and a polymer component, said compositions containing a mixture of antioxidants containing a higher alkyl diester of thiopropionic acid, a hindered phenolic compound and a phenol sulfide compound, preferably an alkyl phenol disulfide oligomer.

Abstract: Compounds having a nucleus of general formula (I): ##STR1## in which: n is an integer and has a value of at least 2;R.sup.1 represents an alkyl group comprising up to 20 carbon atoms; andR.sup.2 represents ##STR2## where R.sup.3 represents an alkyl group comprising up to 20 carbon atoms or an aryl nucleus comprising up to 10 carbon atoms, or R.sup.2 represents a heterocyclic ring nucleus comprising from 4 to 8 ring atoms, at least one atom comprising nitrogen and linking the ring nucleus to the triazine ring. Compounds of formula (I) are suitable for use as a flame retardant additive for polymer materials, particularly when used in combination with a second and different source of phosphorus. The flame retarded polymers are particularly suitable for use in wire and cable insulation, dimensionally recoverable products, molded parts, extruded tubings, pipes and tape type constructions.

Abstract: A stabilized polyaryl ether ketone molding composition contains as essential componentsA: from 50 to 99.99% by weight of a polyaryl ether ketone A prepared by electrophilic polycondensation and at least 50 mol % of which is made up of units of the general formula I ##STR1## where s and t are each 0, 1,2, or 3 and T and T' are each --O-- or --CO--, or a ring-substituted C.sub.1 -C.sub.8 -alkyl, c.sub.6 -C.sub.20 -arly or halogen derivative thereof,B: from 0.01 to 4% by weight of a phosphorus compound B containing units of the general formula IIa ##STR2## or of the general formula IIb ##STR3## in which the substituents and indices have the following meanings: V is oxygen or sulfur,Q.sup.1 is C.sub.1 -C.sub.25 -alkyl or aryl or from 6 to 25 carbon atoms in which the aromatic rings can be monosubstituted, disubstituted or trisubstituted by slkyl of from 1 to 4 carbon atoms,Q.sup.2 and Q.sup.3 are each independently of the other C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.

Abstract: Polymeric-containing compositions having improved oxidative stability have the polymer and at least two stabilizing agents. These agents are selected from low temperature antioxidants such as alkali metal and alkaline earth metal hypo or hydrogen phosphites, high temperature antioxidants such as: alkali metal or alkaline earth metal phenylphosphonates, thioethers like dialkyl thioalkylionate and polymers thereof and metal deactivating agents like polydentate ligands and ethylene diamine-tetracidic acid compounds. The composition can be a coating composition for substrates including those like fibrous material including fibers, bundles of fibers, strands, roving, flakes and beads. The composition can be present as a dried residue on the substrate. For fibrous substrates, the composition also has at least one organofunctional silane coupling agent, may also have processing aids such as epoxy polyester polymers and/or lubricants.

Abstract: This invention provides a mold release composition copmrising (1) a compound or a polymer having at least one of perfluoroalkyl groups having 4 to 20 carbon atoms and perfluoroalkenyl groups having 4 to 20 carbon atoms, and (2) a ladder polymer of organosilsesquioxane.

Abstract: Aqueous coating materials are based on a mixture of(A) an aqueous secondary dispersion of carboxyl-containing copolymers of acrylates or methacrylates having an acid number of from 15-150 and a K value of 22-50, as a binder,(B) not less than 5% by weight, based on the binder (A), of pigments and/or fillers, each of which contains or consists of a calcium compound or magnesium compound, and(C) 0.1-10% by weight, based on the components (B), of a monoester of phosphoric acid whose alcohol component is derived from an alkoxylated C.sub.4 -C.sub.24 -alcohol, phenol or an alkylphenol,the concentration of the components (B) being from 2-70% by volume, based on the solids of (A) and (B).

Abstract: The invention relates to polycarbonate molding compounds consisting of halogen-free polycarbonates, graft polymers, phosphorus compounds, tetrafluoroethylene polymers and, optionally, copolymers and/or, optionally, other additives known per se and a process for their production.

Abstract: A method of improving the flowability and reducing voids in liquid synthetic thermosetting resins precursor compositions used to pot structures such as a honeycomb core or electronic parts and assemblies. Up to about 0.50 weight percent of a suitable titanate coupling agent is mixed with the liquid resin precursor, preferably in a vacuum or an inert atmosphere, any necessary hardener is added later to the premixed resin with the agent, then the resin is poured into a mold holding the structure to be potted. The titanate coupling agents have the general formula: ##STR1## where: R is an alkoxy, alkyl, alkenyl, alkynyl or aralkyl group having from 1 to about 30 carbon atoms or a substituted derivative thereof;M is zirconium or titanium; andR is independently an aryl, aralkyl, alkaryl, alkyl or alkeno group having from 1 to about 30 carbon atoms.