Abstract:
There are provided polymer stabilizers having the formula wherein A is an organic tetravalent radical of 2 to 48 carbons, D is a divalent radical -C(=O)-N(G)-C(=O)-(CH₂) x -, where x is 0 or 1, E is a monovalent radical -(CH₂) x -C(=O)NH-G, where x is 0 or 1, d is 0, 1 or 2 and G is the residue of a stabilizer group, e.g., a hydrazido-substituted hindered phenol or a hydrazido-substituted hindered amine light stabilizers The polymer stabilizers are prepared by the reaction of hydrazido-substituted or certain amino-substituted polymer stabilizers and cyclic dianhydrides. The polymer stabilizers of the invention are useful for protecting a large variety of synthetic polymeric organic materials from the degradative effects of heat, light and oxygen. Some of the modifiers are flame retardants and many more metal deactivators in addition to their primary activity.
Abstract:
A novel lubrication blend useful per se as a lubricant or as an additive to form a novel lubricant composition. The lubrication blend consists essentially of a mixture of: (1) at least one complex sulfide of antimony, represented by the formula: Sb x S y wherein, x is a number in the range from about 1.7 to about 2.3, and y is a number in the range from about 3.6 to about 4.4, (2) at least one antimony oxide, and (3) at least one lamellar crystalline solid lubricant.
Abstract:
Flame retardant compositions are provided containing at least one ester of a polyhaloaromatic acid and at least one polyolefin resin. The compositions may also contain one or more brominated and/or chlorinated compounds to provide additional flame retardancy, and other resins or engineering thermoplastics may be blended with the polyolefin. In addition to providing flame retardancy, the polyhaloaromatic acid esters are effective as processing and compatibilizing aids for the resin, and may also function as tackifiers, mold release agents, plastisols, adhesives, plasticizers, polymer additives, and aids in preventing melt fracture.
Abstract:
The removal of oxidizable organic impurities which include alkylthiolsulfonate from alkanesulfonic acids by treatment with an ozone containing gas is disclosed. The treated products have improved color and odor and exhibit improved long-term color stability.
Abstract:
A method for the preparation of alkanesulfonamides from alkane sulfonyl halides and amines using solvents selected from C₄ to C₈ cyclic ethers or mixtures thereof is disclosed.
Abstract:
Alkyl aryl sulfones of the formula R-SO₂-Ar-Y n , wherein Ar is an aryl compound, Y is a substituent on the aryl compound and R is alkyl or cycloalkyl, and liquid mixtures of positional isomers of the same are prepared by reacting an aryl compound of the formula Ar-Y n , with an alkyl sulfonic acid of the formula R-SO₃H and a phosphorus reagent, preferably under heat. Particularly good yields and pure products are obtained using phosphorus pentoxide. Alkyl aryl sulfones produced by this method are a liquid mixture preferably containing at least two positional isomers, wherein no isomer is present in an amount of more than about 50% of the isomer mixture.
Abstract:
Vinylidene fluoride is produced by the gaseous phase reaction of vinylidene chloride with hydrofluoric acid at a temperature of from about 400° to 700°C in the presence of oxygen and a catalyst containing AlF₃ either alone or in combination with a transition metal fluoride selected from iron, cobalt, chromium, nickel, zinc and combinations thereof.
Abstract:
A fast reacting, automated calorimeter includes a reaction vessel (12) containing a chemically reacting mass, a fluid circulation system (14) containing heat transfer fluid, a portion of the system passing the fluid through an indirect heat exchanger (16) in the reaction vessel (12) for exchanging heat between the fluid and the reacting mass, a flow rate controller (24) responsive to variations in temperature of the reacting mass to vary the flow rate of the fluid circulated through the reaction vessel, a flow rate signal generator (32) for generating a signal related to the varying flow rate of the fluid passing through the reaction vessel, and a circuit (34 through 95) responsive at least to the flow rate signal and which generates a heat flow signal related to instantaneous rate of heat exchange between the reacting mass and the fluid. Heat transfer is measured and the reaction is controlled by varying, during the course of the reaction, the flow rate of heat transfer fluid fed into the reaction vessel at a predetermined temperature.
Abstract:
Aryl substituted morpholinylsilanes, their preparation, compositions containing said compounds and their use as agricultural fungicides are disclosed.