Abstract:
Promotion of paint adhesion and corrosion resistance on the surface of a non-ferrous metal such as aluminum by contact with an aqueous acidic solution containing an anionic polyacrylic/polyacrylamide copolymer, ammonium zirconium fluoride, nitric acid, and water.
Abstract:
Dialkanesulfonyl peroxide (RSO2-0-0-02SR) is prepared in a continuous process by electrolyzing the corresponding alkanesulfonic acid at an elevated temperature (to keep the peroxide product in solution ) in a continmuous-flow electrolysis cell, removing the solution from the electrolytic cell, cooling the solution to precipitate the peroxide product, and recycling the supernatant alkanesulfonic acid back to the cell.
Abstract:
Polymer bound antioxidants in which the antioxidant stabilizer groups are chemically bound to polymers or copolymers by an acylaminoimide or diacylhydrazide function are prepared by reacting hydrazido substituted antioxidants with some or all of the anhydride groups of anhydride containing polymers or copolymers to form a polymer with recurring units selected from the formulas or both wherein the units occur, e.g., in the polymer backbone, x is 0 or 1, R and R are, e.g., hydrogen and G is, e.g., wherein R is t-alkyl of 4-8 carbons, R is, e.g., hydrogen and X is, e.g., -N(R)-C(=O)-(CH2)b- wherein R is e.g., hydrogen and b is 0, 1 or 2. The concentration of the stabilizers bound to the polymer may be readily varied depending upon the particular end-use of said polymer. Polymer with high concentrations of bound antioxidants can be used as masterbatches to stabilize other polymer systems.
Abstract:
Partially epoxidized compounds obtained from Diels Alder adducts of dicyclopentadiene with fatty oils having a iodine number of 70 or greater and their transesterification products with C 1 to C 10 alkanols are disclosed. 100% solids radiation and heat curable coating compositions containing the epoxidized compounds and/or their transesterification products are also disclosed.
Abstract:
This invention relates to a method for manufacturing polyesters, in particular, to using a lithium titanyl oxalate as the catalyst for such reaction to provide fast reactions with excellent color properties for the resulting polyester. The present invention provides an improved method of producing polyester by the polycondensation of polyester forming reactants wherein the improvement comprises utilizing, as the polycondensation catalyst, lithium titanyl oxalate. The improved process produces a polyester of improved color verses other titanyl oxalate catalysts and a novel polyester without the presence of antimony.
Abstract:
A process for the preparation of 1-chloro-2,2-difluoroethane ("142") wherein 1,2-dichloroethene ("1130") is fluorinated in the gas phase in the presence of a catalyst which is a supported or unsupported fluorinated salt of one or more of chromium, iron, niobium, nickel, antimony, tin, tantalum or titanium. 142 is a known foam blowing agent.