Patent application number | Description | Published |
20100261831 | COPOLYMERS OF PARA-ALPHA DIMETHYLSTYRENE AND THERMOPLASTIC COMPOSITIONS - A thermoplastic copolymer prepared from acrylonitrile and para-alpha-dimethylstyrene via bulk or solution polymerization has an improved heat distortion temperature and can be used together with graft copolymers and further components for the preparation of thermoplastic moldings. | 10-14-2010 |
20100261870 | METHOD FOR PRODUCING POLYETHER ALCOHOLS - The invention provides a process for preparing polyether alcohols by adding alkylene oxides onto H-functional starter substances, of which at least one is solid at room temperature in a reaction vessel, by feeding the starting components continuously to the reaction vessel, which comprises preparing a paste from the solid starter substance and feeding this paste continuously to the reaction vessel. | 10-14-2010 |
20120130134 | PROCESS FOR THE PREPARATION OF POLYETHEROLS FROM ALKYLENE OXIDES - A process for the preparation of polyetherols, comprising the following steps:
| 05-24-2012 |
20120214889 | METHOD FOR THE PRODUCING ANHYDRIDE-CONTAINING VINYL AROMATIC-VINYL CYANIDE COPOLYMERS HAVING REDUCED DIRT PARTICLE CONTENT - The present invention relates to processes for preparing copolymers A) with a reduced soil particle content, comprising
| 08-23-2012 |
20130023700 | PROCESS FOR A CONTINUOUS PRODUCTION OF POLYETHEROLS - A process for a continuous production of a polyetherol first involves reacting an alcohol with a starter or an alkoxylated precursor, to give a mixture comprising an alcoholate and water. Water is then removed from the mixture. The process further involves feeding the alcoholate into a bubble column and feeding an alkylene oxide into the bottom of a compartment of the bubble column, such that the alkylene oxide rises in the alcoholate. The alkylene oxide then reacts with the alcoholate or a secondary product from the reaction between the alcoholate and alkylene oxide, to give the polyetherol. | 01-24-2013 |
20140256887 | PREPARATION OF POLYAMIDES BY HYDROLYTIC POLYMIERIZATION AND MULTIPLE EXTRACTION - The present invention relates to a process for preparing polyamides, comprising a hydrolytic polymerization and at least two extraction steps which are not in immediate succession. | 09-11-2014 |