Abstract: Apparatus and method are provided for supplying cellulose acetate tow for the manufacture of cigarette filters from the transport jet of a tow opener to a cigarette filter rodmaking garniture. The apparatus is a frustoconical member having a multiplicity of apertures in the wall thereof and is attached directly to the transport jet. The apparatus has an internal diameter the same size as the exit opening of the transport jet. The opposite end of the adapter is inserted into the tow intake of the garniture. Transport gas that is introduced by the transport jet escapes through apertures in the adapter wall as the tow enters the garniture intake. A closely fitting rotatable sleeve having apertures in the wall thereof can be used to reduce the escape of transport gas through the adapter wall for optimizing performance of the adapter with tows of various processing characteristics. Tow yield is improved and pressure drop variability is reduced.

Abstract: There is disclosed and claimed a process whereby S(+)-ibuprofen L-lysinate salt is produced by selective precipitation from a mixture containing enantiomers of ibuprofen and L-lysine. The quantity of L-lysine is not more than about a molar equivalent of the quantity of S(+)-ibuprofen in the ibuprofen enantiomeric mixture. The mother liquors after separating the above salt are enriched in R-ibuprofen which is racemized by a novel thermal racemization process and may then be recycled.

Abstract: A method for the exhaust dyeing of materials having hydroxy groups and materials containing carbonamide groups using a low salt content dye bath in conjunction with fiber reactive dyes exemplified by a dye of the following formula: ##STR1##

Abstract: A process for recycling waste from the manufacture filtered cigarettes is disclosed herein. The process comprises the following steps: A waste stream from the manufacture of filtered cigarettes is provided. The waste stream includes tobacco, cellulose ester polymer, and paper. A substantial portion of the cellulose ester polymer is separated from this waste stream. This cellulose ester polymer is contacted with a sufficient volumne of fluid to extract contaminants therefrom. The fluid is under pressure and temperature conditions, such that the fluid is a supercritical or a near supercritical fluid.

Abstract: Organic polymer surfaces are modified by contacting such surfaces with a halohydroxy compound and a cationic compound of an acid having a pK.sub.a >2.5. Preferably the organic polymer is selected from the group consisting of polyesters, aromatic polyamides, polyimides, and graphitic polymers and the contacting is conducted at an elevated temperature.

Abstract: The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives. The invention also pertains to the use of N-hydroxy-2-aminoethane derivatives (including the N-hydroxy-2-aminobutane diacid derivatives) in the preparation of pyridine derivatives.

Abstract: An aromatic substituted glycoside is disclosed of the formula ##STR1## wherein the configuration of the substituted --OR on the anomeric carbon is alpha, n is an integer of 0 or 1, and R is a substituted aromatic radical selected from the group ##STR2## where R.sub.1 through R.sub.6 are independently halogen, NO.sub.2, SO.sub.3 H, COR.sub.7, ##STR3## where R.sub.7 is lower alkyl; and includes its stereoisomers, optical isomers and geometric isomers and mixtures of the foregoing isomers. These substrates are useful as direct substrates for alpha-amylases. A process for the preparation of the substrates and related substances is also described.

Abstract: An arylisonitrosoalkanone is hydrogenated in the presence of a noble metal catalyst and a weak carboxylic acid to form an arylalkanolamine which is then hydrogenated in the presence of a strong mineral acid and the transition metal catalyst to form an arylalkylamine. When the arylisonitrosoalkanone is an isonitrosoacetophenone, the isonitrosoacetophenone is prepared by one of two methods.In the first method, a substituted or an unsubstituted isonitrosoacetophenone is prepared from a corresponding substituted or unsubstituted acetophenone by oxidizing the acetophenone to form a substituted or an unsubstituted phenylglyoxalacetal in a reactor, hydrolyzing the phenylglyoxal acetal in the same reactor to form a corresponding substituted or unsubstituted phenylglyoxal, and condensing the phenylglyoxal with hydroxylamine or a salt thereof in the same reactor to form the substituted or unsubstituted isonitrosoacetophenone.

Abstract: An improved process for the production of cellulose ester fibrets wherein a thickened slurry of the fibrets in a liquid mixture of a solvent for the fibrets and a fibret non-solvent is contacted with saturated steam in the separation of the solvent from the fibrets.

Abstract: A method of preparing a catalyst particularly useful in the reaction of ethylene, oxygen and acetic acid in the vapor phase to form vinyl acetate comprises impregnating a porous support with water soluble salts of palladium and gold, fixing the palladium and gold on the support as water insoluble compounds by contacting the salt-impregnated support with a reactive solution in two separate fixing stages wherein the treated support is dried and allowed to stand prior to treatment in the second stage to precipitate the insoluble compounds on the support and reducing the insoluble compounds to free palladium and gold. The catalysts prepared in this manner have been shown to provide improvement with respect to reduced selectivity to CO.sub.2 during the vinyl acetate forming reaction.

Abstract: Flame-retardant polymeric compositions, preferably thermoplastic and especially polyolefin-based compositions, containing an intumescent flame-retardant system substantially comprised of a phosphorus component and an organic nitrogen component. The flame-retardant system is more particularly comprised of ammonium polyphosphate and tris-(2-hydroxyethyl) isocyanurate.

Abstract: Di-amines endowed with chain extension activity for formulations such as polyureas and polyurethanes are disclosed, and which have the general formula: ##STR1## wherein n is 0-1000; R.sub.1, R.sub.2, R.sub.5, and R.sub.6 are each independently selected from the group consisting of H, --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 OH, and --CH.sub.2 --CH.sub.2 --OH; R.sub.3 .dbd.R.sub.4, and R.sub.3 and R.sub.4 are from the group --CH.sub.2 --CH.sub.2 --; --CH.sub.2 --C(CH.sub.3)H--; and --C(CH.sub.3)H--CH.sub.2 --; and the diasteromeric salts thereof.

Abstract: Amines endowed with chain extension activity for formulations such as polyureas are disclosed, which have the general formula: ##STR1## wherein n is 0-1000; R.sub.1 =R.sub.2, and R.sub.1 and R.sub.2 are from the group --CH.sub.2 --CH.sub.2 --; --CH.sub.2 --C(CH.sub.3)H--; and --C(CH.sub.3)H--CH.sub.2 --; and R.sub.3 and R.sub.4 are each independently selected from the group consisting of H, --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 OH, and --CH.sub.2 --CH.sub.2 --OH.

Abstract: An extrusion blow molding process for a filled, liquid crystalline polymer is provided. By the process, molten polymer having improved melt strength, is vertically extruded downward into space through a parison-forming, annular gap. Sag resistant parisons are formed. Beneficially, the parisons may be formed periodically. Advantageously, large-sized parts or structures may be produced.

Abstract: 4-Acetoxystyrene is reacted with a base in a solvent to form a salt of 4-hydroxystyrene via saponification. Alternatively, 4-hydroxystyrene is reacted with a base to form a salt of 4-hydroxystyrene. In the latter case, the 4-hydroxystyrene is prepared by the transesterification of 4-acetoxystyrene. Subsequently or simultaneously, the salt of 4-hydroxystyrene is reacted, preferably in situ, with di-tertiary-butyl-dicarbonate to form 4-tertiarybutoxycarbonyloxystyrene.

Abstract: A unique polymer was synthesized via copolymerization of vinylpyridine and acetoxystyrene under radical-initiated conditions followed by acidic or basic hydrolysis of the acetoxy group to afford the corresponding hydroxy group. The built-in acid-base dual functionality (phenolic and pyridyl units) in this polymer backbone gives rise to its unique solubility properties over a wide pH range in both aqueous and non-aqueous media. Due to its amphoteric nature, this polymer finds application as an anti-stat, viscosity modifier, and/or ion-exchange resin.

Abstract: Novel 4-substituted acetophenone anils and methods for preparing 1,3,5-tris(4'-hydroxyphenyl)benzenes from 4-substituted acetophenones such as 4-hydroxyacetophenones or, from substituted 4-hydroxyacetophenone-anils such as 4-hydroxyacetophenone-anil by reacting the 4-substituted acetophenone or corresponding anil with an aniline derivative.

Abstract: A method of preparing a photosensitizer condensate comprising: condensing a phenolic compound with a diazo sulfonyl chloride, wherein from about 50 to 100 mole percent of the diazo moiety is 2,1,4-diazo and from 0 to about 50 mole percent of the diazo moiety is 2,1,5 diazo; the phenolic compound having, on average, from about 60 mole percent to about 100 mole percent of its hydroxy groups esterified by the diazo sulfonyl chloride; wherein the condensing is conducted in a lactone solvent in the presence of an acid scavenger; and then subsequently isolating the photosensitizer condensate.

Abstract: Polyamines endowed with chain extension activity for formulations such as polyureas and polyurethanes are disclosed, which have the general formula: ##STR1## wherein n is 0-1000; R.sub.1 =R.sub.2, and R.sub.1 and R.sub.2 are from the group --CH.sub.2 --CH.sub.2 --; --CH.sub.2 --C(CH.sub.3)H--; and --C(CH.sub.3)H--CH.sub.2 --; and R.sub.3 and R.sub.4 are each independently selected from the group consisting of H, --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 OH, and --CH.sub.2 --CH.sub.2 --OH.

Abstract: A white, partially translucent, metallized film article which having a flexible, heat resistant, polymeric film material with opposite sides. The film material has deposited on a first side a metal coating which is spectrally reflective and partially light transmissive in the visible region of the spectrum, is capable of transmitting from about 1% to about 70% of incident visible light cast thereon; the second side having a white outermost surface, and has a visible light opacity of from about 0.5 to about 0.98.