Abstract: A composition comprising the hydrosilylation addition product of a linear alkenyl functionalized polyorganosiloxane and an MHQ resin and a low molecular weight silicone when subjected to a new particle size reduction process that includes flow induced shearing provides for components in personal care formulations that have improved spreadability and substance as a consequence of a unique multiple particle size distribution.

Abstract: A composition comprising the hydrosilylation addition product of a linear alkenyl functionalized polyorganosiloxane and an M.sup.H Q resin and a low molecular weight silicone when subjected to a new particle size reduction process that includes flow induced shearing provides for components in personal care formulations that have improved spreadability and substance as a consequence of a unique particle size distribution.

Abstract: A composition comprising the hydrosilylation addition product of a linear alkenyl functionalized polyorganosiloxane and an M.sup.H Q resin and a low molecular weight silicone when subjected to a new particle size reduction process that includes flow induced shearing provides for components in personal care formulations that have improved spreadability and substance as a consequence of a unique particle size distribution.

Abstract: Low molecular weight, high alkenyl content silicone resins of the general formula M.sub.y M.sup.vi.sub.z D.sub.a D.sup.vi.sub.b T.sub.c T.sup.vi.sub.d Q or M.sub.y M.sup.vi.sub.z D.sub.a D.sup.vi.sub.b T.sub.c T.sup.vi.sub.d are disclosed, their use in curable liquid injection molding compositions, a process for varying the cure properties of such compositions and articles of manufacture made thereby and therewith.

Abstract: The present invention provides novel silicone compositions comprising phenol-modified branched and cyclic silicones which provide improved low temperature viscosity properties.

Abstract: A method is provided for preparing a silicone foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicone composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (B) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.

Abstract: A method is provided for preparing a silicone foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicon composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (8) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.

Abstract: A method is provided for preparing a silicon foam having reduced density of about 5 to about 6 pounds per cubic foot, comprising the step of agitating a mixture of ingredients comprising (A) a silicon composition, comprising by weight: (1) 100 parts of a vinyl-terminated polydiorganosiloxane (2) about 0.5 to about 5 parts by weight of an aqueous buffer solution having a pH in the range of about 9 to about 10; and (3) about 25 to about 140 parts per million of a platinum catalyst; (B) about 2.5 to about 20 parts of a substantially linear hydride polysiloxane (C) about 0.1 to about 15 parts of a cyclic hydride polysiloxane; and (D) about 0.1 to about 5 parts of a hydroxyl source selected from the group consisting of water, organic alcohol, or a mixture of the foregoing.

Abstract: Compositions curable to pressure sensitive adhesives are disclosed which comprise from 30 to 50 parts of a vinyl endblocked polydiorganosiloxane fluid having a viscosity from 500 to 10,000 centipoise at 25.degree. C., from 50 to 70 parts of a benzene soluble resin copolymer havingR.sub.3 SiO.sub.1/2 units and SiO.sub.4/2 units,an organopolysiloxane having silicon bonded hydrogen atoms for the purpose of curing the composition and developing the PSA properties, and a platinum catalyst for the curing process.

Abstract: A method is provided for controlling the cure time of a platinum-catalyzed addition cured silicone foamable composition, comprising the step of adding to the composition an aqueous buffer solution having a pH of about 2 to about 10, wherein cure time is increased if the pH of the buffer solution is higher than the pH of the composition prior to the addition thereto of the buffer solution and decreased if the pH of the buffer solution is lower than the pH of the composition prior to the addition thereto of the buffer solution.

Abstract: A viscous torsional vibration damper of the kind operating on the shear film principle has a roll spun annular channel shaped housing providing an annular working chamber within which is mounted an annular complementary inertia mass ring and a viscous damping fluid substantially fills shear film spaces between the working surfaces of the inertia ring and confronting working surfaces of the housing within the chamber. Working surface area of the housing within the working chamber has a spinning roll burnished finish. A roll formed rabbet provides a shoulder seat on one wall of the housing with an edge portion of a closure sealed thereto. Laser welding permanently secures the closure to the housing.

Abstract: A viscous torsional vibration damper of the kind operating on the shear film principle has a roll spun annular channel shaped housing providing an annular working chamber within which is mounted an annular complementary inertia mass ring and a viscous damping fluid substantially fills shear film spaces between the working surfaces of the inertia ring and confronting working surfaces of the housing within the chamber. Working surface area of the housing within the working chamber has a spinning roll burnished finish. A roll formed rabbet provides a shoulder seat on one wall of the housing with an edge portion of a closure sealed thereto. Laser welding permanently secures the closure to the housing.

Abstract: An improved process for curing a polyepoxide composition with a polycarboxylic acid or polycarboxylic acid anhydride is described wherein the addition of a diphenyliodonium salt accelerator provides for shortened curing reaction times at lower reaction temperatures or at room temperatures if the composition is exposed to a source of ultraviolet radiation.

Abstract: There are provided aromatic polyformal-polycarbonate block polymers and method for making such materials. The polyformal-polycarbonate block polymers can be made by phosgenating a mixture of a bisphenol and oligomeric aromatic polyformal having terminal phenolic groups. The aromatic block polymers are high performance thermoplastics having improved hydrolytic stability compared to aromatic polycarbonates and improved heat distortion temperature compared to conventional aromatic polyformal.

Abstract: There is provided, a method for making cyclic poly-formal substantially free of linear polyformal by agitating a plural phase mixture of an aqueous alkali metal salt solution of bisphenol in contact with methylene halide and a phase transfer catalyst. The cyclic polyformal can be used to make wire coating compositions.

Abstract: Aromatic bisimides can be prepared by effecting reaction under anhydrous conditions between a 3- or 4-nitro-N-substituted phthalimide with an aromatic dihydroxy compound in the presence of a certain class of dipolar aprotic compounds as solvent and solid potassium carbonate and in the further presence of a particulate zeolite adsorbent.

Abstract: A method is provided for making aromatic bis(ether dicarboxylic acid)s, such as 2,2-bis[4(3,4-dicarboxyphenoxy)phenyl] propane. The corresponding aromatic bis(etherimide) is hydrolyzed in base to produce a tetraacid salt which is directly acidified with concentrated mineral acid such as sulfuric acid. The resulting aqueous mixture containing a paste is heated to produce the aromatic bis(ether dicarboxylic acid) in ready filterable form.

Abstract: A process for purifying a bisphenol-A bisimide which comprises treating the latter with a polar solvent selected from the class consisting of methanol, acetonitrile, acetone, and diethyl ether.

Abstract: Aromatic tetracarboxylic acids can be prepared by effecting reaction between a 4-nitro-N-alkylphthalimide with an aromatic dihydroxy compound in the presence of potassium carbonate as a catalyst and using dimethyl sulfoxide as a solvent.