Abstract: A method of stabilizing a polymer film coating or molded article against the action of light, moisture, and oxygen is disclosed. The method comprises incorporating in said polymer a stabilizingly and synergistically effective amount of:(A) A 2,2,6,6-tetraalkylpiperidine compound, or the acid addition salts or complexes with metal compounds thereof; and(B) A tris-aryl-s-triazine compound represented by the formula: ##STR1## wherein X, Y and Z are each aromatic, carbocylic radicals of less than three 6-membered rings, and at least one of X, Y and Z is substituted by a hydroxy group ortho to the point of attachment to the triazine ring; and each of R.sup.1 through R.sup.9 is selected from the group consisting of hydrogen, hydroxy, alkyl, alkoxy, sulfonic, carboxy, halo, haloalkyl and acylamino.

Abstract: Heat curable compositions of reinforcing fibers (filaments), a thermosetting prepolymer or prepolymers and an effective amount of a curing agent or agents in which the fibers have been precoated with a fiber- and matrix resin-reactive elastomer are described. The compositions are useful to form composites of high fracture toughness and compressive strength which, in turn, can be formed into structural members such as aircraft parts. Processes for applying an elastomer coating to fiber tapes, fabrics and rovings are also described.

Abstract: A shipping container is positively resealed by an auxiliary cover. The shipping container and auxiliary cover have a plurality of flanges with coupling holes. The flange holes are aligned and held in position by coupling pins with retaining means.

Abstract: Dialkylphenylphosphonates are prepared by the reaction of a metal alkoxide with a phenyl phosphonic dihalide. The reactants are combined to give a temperature rise to 60.degree. C. within 15 minutes, resulting in improved yields and assay of product.

Abstract: An apparatus for dispersing pigment in a liquid comprising: a mixing vessel, a stirrer shaft with affixed impeller, a motor for rotating the shaft, and support structure for positioning the rotatable shaft and impeller within the vessel; with the improvement of using as an impeller a wire wheel of radially extending stiff wires, the wheel having corrugated sides formed from the outermost layers of wires. A method of dispersing solids using the apparatus of the invention is also described.

Abstract: A rust preventive composition effective in protecting metal surfaces by direct or vapor phase contact contains as essential ingredients: (A) an aryl phosphate; (B) a polyolester; (C) a calcium petroleum sulfonate; and (D) an alkylamine alkanol.

Abstract: A process is disclosed for reducing the solidification tendency of a normally solid lower aluminum alkoxide having 2 to 5 carbon atoms in the alkoxide radical. One embodiment comprises the steps of adding the aluminum alkoxide and a specific phosphorus compound to a common solvent, and forming a solution; and then extracting the common solvent to form a stabilized liquid. The phosphorus compound has an unblended structural formula ##STR1## wherein X, Y and Z are selected from (a) alkoxy groups containing from one to 12 carbon atoms; (b) alkyl groups containing from one to 14 carbon atoms; (c) aryloxy groups containing from 6 to 12 carbon atoms; (d) alkyl-substituted aryloxy groups wherein an alkyl group containing from one to 14 carbon atoms is substituted for a hydrogen atom; (e) alkyl-substituted aryloxy groups containing from 7 to 26 carbon atoms; and (f) aryl-substituted alkyl groups containing from 7 to 26 carbon atoms. Preferred processing conditions and products thereby obtained are also disclosed.

Abstract: Triarylphosphates are prepared by phosphorylation of alkylphenols without use of phosphorylation catalyst. An improved phosphorylation step includes preheating alkylphenol feedstock to 150.degree. C. and completing reaction at 215.degree. C. or above in the presence of a stoichiometric excess of alkylphenol. The absence of phosphorylation catalyst simplifies distillative purification of reaction product by eliminating the need to withdraw purified product as distillate.

Abstract: Polyurethane foams prepared with halogenated phosphoric acid flame retardant have low scorch and surface discoloration when prepared in the presence of a composition containing phenothiazine, 4,4'-thio-bis-(6-tertiary butyl meta cresol), and organophosphite.

Abstract: The degradation of a hydrolyzable ester containing functional fluid is monitored by placing in the fluid a probe-containing a corrodible metal sensor and measuring by electrical means the corrosion of the sensor.

Abstract: An acid resistant phosphate ester functional fluid comprises phosphate ester basestock and an additive composition comprising: (1) N-alkyl-2-pyrrolidone, (2) epoxide, and (3) triazole. The functional fluid has utility for lubricating machinery. The additive composition may be prepared separately and used for imparting acid resistance to phosphate esters.

Abstract: Polyurethane foams prepared from the reaction of polyester polyol with organic isocyanate have improved flame retardance and dripping ember retardance by incorporation of an additive comprising (1) halogenated flame retardant, and (2) organic solvent soluble glycoluril-formaldehyde material.

Abstract: Flame retardant oligomeric phosphate ester compositions having the structural formula: ##STR1## are prepared, wherein R is C.sub.1 -C.sub.10 alkyl or haloalkyl, R.sup.1 and R.sup.2 can be the same or different and are hydrogen, C.sub.1 -C.sub.10 alkyl or haloalkyl and n is an integer from zero to about 10.The method of preparing the compositions comprises reacting P.sub.2 O.sub.5 with a trialkyl or tris(haloalkyl)phosphate in the presence of about 0.01% to about 5% of a phosphite at a temperature from about 0.degree.-200.degree. C. A polyphosphate ester having P--O--P bonds is formed which is then reacted with an epoxide to yield the oligomeric phosphate ester flame retardant compositions.Alternatively, a method of preparing similar compositions comprises reacting P.sub.2 O.sub.5 with a trialkyl or tris (haloalkyl)phosphite at a temperature from about 0.degree. C. to about 200.degree. C.

Abstract: Polyurethane foams prepared from the reaction of polyester polyol with organic isocyanate have improved flame retardance and dripping ember retardance by incorporation of an additive comprising (1) halogenated flame retardant, and (2) water or alcohol soluble urea-formaldehyde resin.

Abstract: A process for the preparation of organic phosphate-phosphonates comprises the steps of reacting an organic acylating agent with an organophosphite triester to form an intermediate followed by reacting the intermediate with an organophosphite diester.Typically benzoyl chloride is the acylating agent, triethyl phosphite and bis (.beta.-chloroethyl) phosphite the sequential reactants, and the second step is carried out in the presence of a catalytic amount of a tertiary amine. A solvent such as methylene dichloride may be employed.Organic phosphate-phosphonates are useful as flame retardants, especially in urethane foams.

Abstract: A composition comprises polyurethane, a two-component flame retardant system consisting of an additive first flame retardant containing organophosphorus, and a second flame retardant containing organochlorine or organobromine.The composition of the invention may be employed for polyurethane foams, especially rigid foams.Diminished combustibility for rigid foam is measured by a flame-spread index less than 75 and a smoke developed index less than 450 when subjected to ASTM Test E-84, Surface Burning Characteristics of Building Materials.Dimethyl methylphosphonate is a representative additive organophosphorus first flame retardant. Trichloroisopropyl alcohol is a representative second flame retardant containing organochlorine.

Abstract: Acidity of used organophosphate containing functional fluids is reduced by contact with activated alumina. The activated alumina is regenerated for reuse by a sequential leaching/heating process.

Abstract: Flame retardant phosphonate derivatives of polyalkylene polyamines are prepared having the structural formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.5 can be the same or different substituted or nonsubstituted lower alkylene groups of about 2-10 carbons, or aryl groups of about 6-14 carbons; and R.sup.5 can also be haloalkyl of about 1-10 carbons;R.sup.3 can be a lower alkylene radical of about 1-10 carbons;R.sup.4 can be an alkyl, alkenyl, alkynyl, or aryl group of about 1-20 carbons;m is a number from 0 to 2;n is a number from 0 to 2;y is a number from 0 to 10; andx can be the same as the (R.sup.5 OH) group or the ##STR2## The preparation involves the condensation of a polyalkylene-polyamine with an aldehyde or ketone and a phosphonate or a phosphite. The condensation product is then reacted with an epoxide to yield the phosphonate derivatives of polyalkylene-polyamines.

Abstract: Flame retardant oligomeric phosphate ester compositions having the structural formula: ##STR1## are prepared, wherein R is C.sub.1 -C.sub.10 alkyl or haloalkyl, R.sup.1 and R.sup.2 can be the same or different and are hydrogen, C.sub.1 -C.sub.10 alkyl or haloalkyl and n is an integer from zero to about 10.The method of preparing the compositions comprises reacting P.sub.2 O.sub.5 with a trialkyl or tris(haloalkyl)phosphate in the presence of about 0.01% to about 5% of a phosphite at a temperature from about 0.degree.-200.degree. C. A polyphosphate ester having P--O--P bonds is formed which is then reacted with an epoxide to yield the oligomeric phosphate ester flame retardant compositions.Alternatively, a method of preparing similar compositions comprises reacting P.sub.2 O.sub.5 with a trialkyl or tris(haloalkyl)phosphite at a temperature from about 0.degree. C. to about 200.degree. C.

Abstract: A method for separating vinyl chloride monomer from an aqueous polyvinyl chloride resin mixture which comprises passing the aqueous resin mixture at an elevated temperature and sub-atmospheric pressure over a vibrating surface.