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Paul Boerzel, Klaus Bronstert, Friedrich Hovemann: Polyisobutenes. BASF Aktiengesellschaft, Keil & Witherspoon, May 1, 1979: US04152499 (206 worldwide citation)

Isobutene polymers having a mean degree of polymerization P of from 10 to 100 and a proportion E of double bonds, capable of reaction with maleic anhydride, of from 60 to 90%, where E=100% corresponds to the calculated theoretical value for the case where each molecule of the isobutene polymer conta ...


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Jukka Alihanka, Kaarle Vaahtoranta, Stig Eyrik Bjorkqvist: Apparatus in medicine for the monitoring and or recording of the body movements of a person on a bed, for instance of a patient. Instrumentarium Oy, Keil & Witherspoon, March 23, 1982: US04320766 (138 worldwide citation)

A capacitive motion sensor placed under a mattress or the like for monitoring the movements of a person. The sensor uses an active layer consisting of two courses of dielectric material placed in contact with one another. Movements of a person on top of the mattress cause the courses to move relativ ...


4
Max Appl, Ulrich Wagner, Hans J Henrici, Klaus Kuessner, Klaus Volkamer, Ernst Fuerst: Removal of CO.sub.2 and/or H.sub.2 S and/or COS from gases containing these constituents. BASF Aktiengesellschaft, Keil & Witherspoon, June 22, 1982: US04336233 (135 worldwide citation)

An aqueous solution containing from 0.81 to 1.3 moles of piperazine per liter is used as a washing agent for removing impurities such as H.sub.2 S, CO.sub.2 and COS from gases. Piperazine can also be used, in amounts of up to 0.8 mole per liter, together with physical or chemical solvents, to accele ...


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Hansjorg W Sinn, Walter O Kaminsky, Hans Jurgen C Vollmer, Rudiger O H H Woldt: Preparing ethylene polymers using Ziegler catalyst comprising cyclodienyl compound of zirconium. BASF Aktiengesellschaft, Keil & Witherspoon, September 13, 1983: US04404344 (120 worldwide citation)

The invention relates to a method for preparing polymers of ethylene and propylene, or of copolymers of ethylene and alpha olefins such as propylene 1-butene and 1-hexene or alpha omega dienes such as alpha omega octadiene, respectively, by polymerization within a temperature range from -80.degree. ...


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Clarence R Tate: Process of microencapsulation and products thereof. Thalatta, Keil & Witherspoon, July 8, 1980: US04211668 (106 worldwide citation)

This invention relates to a process for making microscopic size capsules from an emulsion having an inner oily or hydrophobic phase (material to be encapsulated) and an outer hardenable hydrophilic phase. The process is characterized by the step of contacting said emulsion with a break-up fluid capa ...


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Michael Portugall, Heino Finkelmann, Helmut Ringsdorf: Liquid-crystalline polymer phase having a cholesteric structure, processes for its preparation and its use. BASF Aktiengesellschaft, Keil & Witherspoon, October 6, 1981: US04293435 (104 worldwide citation)

A liquid-crystalline polymer phase having an induced cholesteric structure comprises a component having a chiral structure and a component having a nematic structure and contains a polymer with nematogenic units of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, n is an integer from 1 to ...


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Peter Lechtken, Ingolf Buethe, Manfred Jacobi, Werner Trimborn: Acylphosphine oxide compounds their preparation and use. BASF Aktiengesellschaft, Keil & Witherspoon, November 3, 1981: US04298738 (86 worldwide citation)

Acylphosphine oxide compounds of the general formula ##STR1## where R.sup.1 is alkyl, cyclohexyl, cyclopentyl, aryl which is unsubstituted or substituted by halogen, alkyl or alkoxy, or an S-containing or N-containing five-membered or six-membered heterocyclic radical,


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Peter Lechtken, Ingolf Buethe, Anton Hesse: Acylphosphine oxide compounds. BASF Aktiengesellschaft, Keil & Witherspoon, April 13, 1982: US04324744 (78 worldwide citation)

Acylphosphine oxide compounds of the general formula ##STR1## where R.sup.1 is alkyl, cyclohexyl, cyclopentyl, aryl which is unsubstituted or substituted by halogen, alkyl or alkoxy, or an S-containing or N-containing five-membered or six-membered heterocyclic radical,


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Gerhard Heinz, Peter Richter, Mong Jon Jun: Photopolymerizable compositions containing elastomers and photo-curable elements made therefrom. BASF Aktiengesellschaft, Keil & Witherspoon, March 16, 1982: US04320188 (73 worldwide citation)

Photopolymerizable compositions based on an elastomeric styrene-diene block polymer, one or more photopolymerizable olefinically unsaturated monomers and one or more photopolymerization initiators exhibit improved properties if they contain, as an essential constituent, an elastomeric block copolyme ...



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