Patent application number | Description | Published |
20080249264 | Method For Producing Highly Reactive Isobutylene Homo-Or Copolymers from Technical Flows of C4-Hydrocarbon Using Bronsted Acid Catalyst Complexes - Preparation of highly reactive isobutene homo- or copolymers with M | 10-09-2008 |
20080249267 | Method for Producing Highly Reactive Isobutylene Homo-or Copolymers Using Boron-Containing Catalyst Complexes - Preparation of highly reactive isobutene homo- or copolymers having M | 10-09-2008 |
20080293900 | Method for Producing Highly Reactive Isobutylene Homo-or Copolymers Using Metal-Containing Catalyst Complexes - Preparation of highly reactive isobutene homo- or copolymers having M | 11-27-2008 |
20090018298 | COPOLYMERS FORMED BY RADICAL POLYMERIZATION - Certain copolymers formed from alkenes and one or more activated alkenes. In particular copolymers of isobutylene and one or more activated alkenes. Activated alkenes are, for example, selected from alkyl acrylates, alkyl methacrylates, maleic anhydride, or isobutenyl succinic anhydride. | 01-15-2009 |
20090023882 | PROCESS FOR PREPARATION OF POLYISOBUTYLENE WHOSE CONTENT OF TERMINAL DOUBLE BONDS IS MORE THAN 50% FROM AN INDUSTRIAL C4 HYDROCARBON STREAM COMPRISING 1-BUTENE, 2-BUTENE AND ISOBUTENE - Preparation of polyisobutylene having a content of terminal double bonds of more than 50% by polymerizing isobutene using a polymerization catalyst customary therefor from a technical 1-butene-, 2-butene- and isobutene-containing C | 01-22-2009 |
20100004427 | METHOD FOR THE REMOVAL OF ISOBUTENE OLIGOMERS FROM AN ISOBUTENE POLYMER - A process is described for removing isobutene oligomers from an isobutene polymer by stripping the isobutene polymer with vapors of a saturated hydrocarbon having at least 8 carbon atoms and at least partly driving out the isobutene oligomers. Troublesome isobutene oligomers are substantially removed without impairing the reactivity of the isobutene polymer (expressed as the content of the methylidene double bonds). | 01-07-2010 |
20100081727 | PROCESS FOR PREPARING ENE ADDUCTS - Preparation of ene adducts, especially polyisobutylsuccinic anhydrides, by thermally reacting olefins (“enes”), especially polyisobutylenes, with vinylic carbonyl compounds (“enophiles”), especially maleic anhydride, using microwave radiation. | 04-01-2010 |
20100170636 | SEMI-INTERPENETRATING NETWORK HAVING A PHASE OF A LINEAR NONCROSSLINKED ISOBUTENE POLYMER - A description is given of a semi-interpenetrating network having a first phase of a linear noncrosslinked isobutene polymer and a second phase of a crosslinked polymer, wherein the crosslinked polymer is obtained by crosslinking molecular enlargement reaction in the presence of the isobutene polymer. The crosslinked polymer is preferably obtained by free-radical polymerization of ethylenically unsaturated monomers comprising at least one polyethylenically unsaturated monomer. The networks are suitable as molding compounds having gas and moisture barrier effect or as adhesives. | 07-08-2010 |
20100284882 | SPIRO COMPOUNDS - The invention relates to spiro compounds of the formula (I) and to monolithic materials prepared therefrom by twin ring-opening polymerisation which consist of a porous metal oxide or semimetal oxide framework and are suitable for use as catalyst supports or as supports for active compounds. | 11-11-2010 |
20110028666 | PROCESS AND APPARATUS FOR CONTINUOUSLY POLYMERIZING CATIONICALLY POLYMERIZABLE MONOMERS - The present invention relates to a process and to an apparatus for continuous living polymerization of cationically polymerizable monomers, in which at least three feedstocks are mixed in one or more mixers with microstructures and then polymerized in at least one reaction zone. | 02-03-2011 |
20110034360 | ALPHA-OLEFIN/ISOBUTENE DIBLOCK COPOLYMERS - The present invention relates to diblock copolymers of the formula A-B which are formed from a polymer block A which is formed essentially from α-olefin units having from 6 to 22 carbon atoms, and a polymer block B which is formed essentially from isobutene units, to a process for their preparation, to their use in lubricant compositions and to lubricant compositions which comprise such diblock copolymers. | 02-10-2011 |