Abstract:
Apparatus for the vapor phase polymerization of at least one polymerizable monomer comprising:(a) a horizontal, stirred reactor of substantially circular cross section containing a centrally-located drive shaft extending longitudinally through said reactor to which are attached a plurality of adjacently located paddles, which paddles cause essentially no forward or backward movement of the particulate matter contained in said reactor and extend transversely within and to a short distance from the internal surfaces of said reactor, said reactor being divided into two or more individually polymerization-temperature controllable polymerization sections by one or more barriers constructed to allow free gas mixing within said reactor and control particulate movement between said sections;(b) driving means for said drive shaft;(c) one or more outlets for removal of reactor off-gases situated along the topward part of said reactor;(d) one or more vapor recycle inlets situated along the bottomward portion of said reactor for the introduction of said at least one monomer;(e) one or more catalyst addition inlets situated along said reactor;(f) a plurality of quench liquid inlets situated along the topward part of said reactor whereby quench liquid may be introduced into said polymerization sections of said reactor; and(g) a particulate matter take-off at one end of said reactor.
Abstract:
Semiconducting carbonaceous pyropolymeric inorganic refractory oxide materials are prepared by introducing inorganic refractory oxide materials into a reaction section which may comprise a horizontal screw reactor wherein said inorganic refractory oxide materials are contacted with a gasified hydrocarbon thereby maintaining the inorganic refractory oxide material in a semifluidized state. Following this contact, the resultant carbonaceous pyropolymer coated inorganic refractory oxide material is then cooled and recovered.
Abstract:
Plastic compositions containing polyesters and bis-phenoxy compounds having the formula ##SPC1##Wherein Z is bromine or chlorine, m and m' are integers having a value of 1-5, i and i' are integers having a value of 0-2, HBCA is a halo-branched chain alkylene group having from 1 to 6 carbon atoms and A is cyano, nitro, lower alkoxy, lower alkyl, fluorine, dialkylamino, phenyl, halo-phenyl, benzyl or halo-benzyl.
Abstract:
Plastic compositions containing polyurethanes and bis-phenoxy compounds having the formula ##SPC1##Wherein Z is bromine or chlorine, m and m' are integers having a value of 1-5, i and i' are integers having a value of 0-2, HBCA is a halo-branched chain alkylene group having from 1 to 6 carbon atoms and A is cyano, nitro, lower alkoxy, lower alkyl, fluorine, dialkylamino, phenyl, halo-phenyl, benzyl or halo-benzyl.
Abstract:
Apparatus for carrying out fluidized operations including a housing defining an upper chamber and a lower chamber, with each of the chambers containing agitating means therein to insure a high degree of homogeneity in each of the chambers, a plurality of tubes enclosed in a jacket positioned between the upper and lower chambers and communicating therewith, the tubes providing large heat transfer surfaces, inlet means to supply a fluidizable material to the one chamber and outlet means to remove fluidizable material from the other chamber, and means to supply a fluidizing gas to the lower chamber whereby the fluidizing gas passes upwardly through the lower chamber and through the tubes into the upper chamber while fluidizing the material in each of the upper chamber, the tubes and the lower chamber. The apparatus of the invention is particularly well suited for converting starches to dextrin.
Abstract:
Apparatus for the vapor phase polymerization of at least one polymerizable monomer comprising: (a) a horizontal reactor of substantially circular cross-section containing a centrally-located drive shaft extending longitudinally through said reactor to which are attached a plurality of adjacently located paddles, which paddles cause essentially no forward or backward movement of the particulate matter contained in said reactor and extend transversely within and to a short distance from the internal surfaces of said reactor, said reactor being divided into two or more individually gas-composition-controllable and polymerization-temperature-controllable polymerization compartments, by one or more dividing structures so constructed to control gas intermixing and movement of said particulate matter between said compartments; (b) driving means for said drive shaft; (c) one or more reactor off-gas outlets in each of said compartments spaced along the topward part of said reactor; (d) one or more vapor recycle inlets in each of said compartments spaced along the bottomward portion of said reactor; (e) one or more catalyst addition inlets in each of said compartments spaced along said reactor; (f) a plurality of quench liquid inlets spaced along the topward part of said reactor whereby quench liquid can be introduced into said two or more compartments; and (g) takeoff means for said particulate matter at one end of said reactor.
Abstract:
Plastic compositions containing polyesters and bis-phenoxy compounds having the formula
WHEREIN Z is bromine or chlorine, m and m'' are integers having a value of 1-5, i and i'' are integers having a value of 0-2, R is herein defined and A is cyano nitro, lower alkoxy, lower alkyl, fluorine, dialkylamino, phenyl, halo-phenyl, benzyl or halobenzyl.
Abstract:
Plastic compositions containing acrylonitrile-butadiene-styrene and bis-phenoxy compounds having the formula
WHEREIN Z is bromine, m and m'' are integers having a value of 14, i and i'' are integers having a value of 1 or 2, alkylene is a straight or branched chain alkylene group having from 1 to 6 carbon atoms and A is either cyano, nitro, lower alkoxy, lower alkyl, fluorine, dialkylamino, phenyl, halo-phenyl, benzyl or halo- benzyl.
Abstract:
WHEREIN Z is bromine or chlorine, m and m'' are integers having a value of 1-5, i and i'' are integers having a value of 0-2, R is herein defined, M and M'' are each independent and are from the group oxygen, nitrogen or sulfur with the proviso that M and M'' cannot concurrently be oxygen in both cases, and A is chlorine, cyano, nitro, lower alkoxy, lower alkyl, fluorine, dialkylamino, phenyl, halo-phenyl, benzyl, or halo- benzyl.
Plastic compositions containing polyolefins and halogenated aryl compounds having the formula
Abstract:
WHEREIN Z is bromine or chlorine, m and m'' are integers having a value of 1-5, i and i'' are integers having a value of 0-2, R is herein defined, M and M'' are each independent and are from the group oxygen, nitrogen or sulfur with the proviso that M and M'' cannot concurrently be oxygen in both cases, and A is chlorine, cyano, nitro, lower alkoxy, lower alkyl, fluorine, dialkylamino, phenyl, halo-phenyl, benzyl, or halo- benzyl.
Plastic compositions containing polyacrylates and halogenated aryl compounds having the formula: