Abstract:
A composition comprising an addition terpolymer containing acrylonitrile, indene and a third monomer selected from methyl methacrylate or at least one monomer of the group α-methylstyrene and vinyl aromatics of the formula: where each R is independently selected from Cl, H and a C, to C 9 alkyl group and x = 1 or 2, combined in the polymer structure such that
(1) when the third monomer is methyl methacrylate, the polymer contains in weight percent 2-35 acrylonitrile, 10-67 indene, 5-85 methyl methacrylate, and the moles of acrylonitrile plus methyl methacrylate are equal to or more than the moles of indene, (2) when the third monomer is one of both of a-methylstyrene and said vinyl aromatics, the polymer contains in weight percent 10-40 acrylonitrile, 26-67 indene and 4-50 of said third monomer, and the moles of acrylonitrile plus said vinyl aromatics is equal to or greaterthan the moles of α-methylstyrene plus indene.
Abstract:
A composition comprising an intimate admixture of (a) 50 to 98 parts by weight of a vinyl chloride polymer having an inherent viscosity of at least 0.4, and (b) 50 to 2 parts by weight of an addition terpolymer containing acrylonitrile, indene and a third monomer selected from methyl methacrylate or at least one monomer of the group a-methylstyrene and vinyl aromatics of the formula: where each R is independently selected from CI, H and a C 1 to C 9 alkyl group and x = 1 or 2, combined in the polymer structure such that
(1) when the third monomer is methyl methacrylate, the polymer contains in weight percents 2-35 acrylonitrile, 10-67 indene, 5-85 methyl methacrylate, and the moles of acrylonitrile plus methyl methacrylate are equal to or more than the moles of indene, (2) when the third monomer is one of both of a-methylstyrene and said vinyl aromatics, the polymer contains in weight percent 10-40 acrylonitrile, 5-67 indene and 4-70 of said third monomer, and the moles of acrylonitrile plus said vinyl aromatics is equal to or greater than the moles of a-methylstyrene plus indene.
Abstract:
A scrubbing process for high feed concentrations of different materials in liquid streams. The process calls for providing a porous membrane (11) in a cell (10), the membrane (11) having pores of sufficient dimension to allow passage of the different materials therethrough; providing a first stream (12) comprising the different materials in a liquid carrier, providing a second stream (13) comprising an affinity adsorbent in a second liquid carrier, wherein the affinity adsorbent has a dimension larger than that of the pores and has a preferred binding capacity for at least one but not all of the different materials; mixing the first and second streams together to form a composite mixture (14) wherein a portion of the different materials become bound to the affinity adsorbent and a portion of the different materials remain essentially unbound to the affinity adsorbent; and passing the composite mixture against a first side of the membrane while passing a liquid carrier (16) for any of the unbound material against a second side of the membrane to produce a first exit stream (19) containing the affinity adsorbent and a high concentration of at least one of the different materials and a second exit stream (18) containing the liquid carrier and a high concentration of at least one of the other different materials.
Abstract:
An apparatus for froth flotation separation of the components of a slurry, said apparatus comprising at least one flotation cell, at least one spray nozzle for feeding slurry to said flotation cell, and a rotatably mounted skimmer means for skimming froth from said flotation cell, wherein said spray nozzle is affixed to and situated behind the rotational direction of said skimmer means and wherein said spray nozzle and skimmer are adapted to simultaneously rotate thereby causing the skimmer to skim the froth in the direction opposite to the spraying direction of the spray nozzle.
Abstract:
A catalytic process for the production of high molecular weight nylon-type polyamides from omega-aminonitriles has been discovered. The process comprises contacting an omega-aminonitrile, water and a catalytic amount of an oxygenated phosphorus compound catalyst.
Abstract:
An electrical storage device is described which utilizes an electrode for reversibly storing hydrogen in an alkaline environment, the electrode comprising an amorphous metal alloy of the formula: wherein A is at least one metal selected from the group consisting of Pd, Ag, Au, Hg and Pt; M is at least one metal selected from the group consisting of Pb, Ru, Cu, Cr, Mo, Si, W, Ni, Al, Sn, Co, Fe, Zn, Cd, Ga and Mn; M' is at least one of the elements selected from the group consisting of Ca, Mg, Ti, Y, Zr, Hf, V, Nb, Ta and the rare earths; and wherein a ranges from about 0.005 to about 0.80; b ranges from zero to about 0.70; and c ranges from about 0.08 to about 0.95.
Abstract:
A semirigid support member is provided for deploying fiexible photovottaic modules in a manner that imparts a degrees of rigidly and permanence to the deployment The semirigid support members provide lightweight economical means for lending structural support to flexible photovoltaic modules. The support members may be interconnected and additionally connected to a permanent base foundation. Specifically the semirigid photovoltaic module assembly comprises a flexible photovoltaic module; a semirigid support member (10) having a frame (12) adapted to be in contact with the perimeter of the flexible photovoltaic module, an inwardly facing flange (14) extending upward from the frame which overlaps a portion of the module perimeter, a skirt - (17) depending downward from the frame, and rib stiffeners - (20) integral to the frame and extending inward and adapted to contact the flexible photovoltaic module; and means for attaching the photovoltaic module to the support member.