| Patent Number |
Title Of Patent |
Date Issued |
| 5705568 |
Polypropylenes obtainable by chemical degradation |
January 6, 1998 |
| New polypropylenes which are obtained by chemical degradation of elastic polypropylenes using organic peroxides. |
| 5686533 |
Polypropylenes having a reduced tendency to white fracture |
November 11, 1997 |
| Polypropylenes having a reduced tendency to white fracture, which containA) from 70 to 95% by weight of a highly isotactic polypropylene having anisotactic index of more than 90 and a melt flow index between 0.1 and 100 g/10 min, it being possible for the polypropylene to be a homopolymer |
| 5681922 |
Process for increasing the proportion of the .beta.-modification in polypropylene |
October 28, 1997 |
| Process for increasing the proportion of the .beta.-modification in polypropylenes, in which the polypropylenes are melted together with dicarboxylic acid salts of metals of the 2nd main group of the Periodic Table as .beta. nucleating agents and optionally with further conventional |
| 5665820 |
Modified elastomeric polypropylenes |
September 9, 1997 |
| Elastomeric polypropylenes modified by grafting and blends thereof with isotactic polypropylenes modified by grafting, and the use thereof as compatibilizers or adhesion promoters for blends and metal composites. |
| 5650179 |
Apparatus for pelletizing polymers |
July 22, 1997 |
| An apparatus for pelletizing a polymer melt, in which the polymer melt to be pelletized is divided in a housing of a pelletizing device into at least two part-streams, which are deflected and fed to at least two die plates which are spatially separate from one another and are heatable, |
| 5629255 |
Highly active catalysts for olefin polymerization and a polymerization process using these catal |
May 13, 1997 |
| Highly active catalysts, for olefin polymerization, from tetraneophylzirconium and partly hydroxylated metal oxides from group IIa, IIIa, IVa or IVb of the Periodic Table, which are essentially free from by-products. |
| 5596076 |
Process for the preparation of elastomeric polypropylenes |
January 21, 1997 |
| Process for the preparation of elastomeric, non-agglomerated, powdery/crumbly polypropylene by polymerization of propylene, if appropriate together with other olefins as comonomers, in liquid propylene and subsequent precipitation of the polypropylenes formed with CO.sub.2 or a polar |
| 5592874 |
Double belt press with hydrostatic belt support |
January 14, 1997 |
| A double belt press for the continuous manufacture of material webs. The press includes pressing belts which are supported by support strips mounted on pressing plates. The support strips form pressure chambers which receive fluid pressure media for acting on a surface of the pressing |
| 5585435 |
Process for grafting polyolefins |
December 17, 1996 |
| Process for the preparation of grafted polyolefins in a fluidized bed fluidized by means of steam and, if appropriate, alcohols. |
| 5521265 |
Metallocenes and their use for olefin polymerization |
May 28, 1996 |
| Metallocenes of the formula ##STR1## where M is a metal selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta or an element selected from the group of the lanthanides, X.sub.1 and X.sub.2 are each an alkyl, alkoxy, aryl, aryloxy, alkenyl, arylalkyl, alkylaryl or arylalkenyl |
| 5231148 |
Mixture of predominantly one polyhydroxyalkanoate and a compound which contains at least two rea |
July 27, 1993 |
| Mixture containing at least 70% by weight of polyhydroxyalkanoate and one or more compounds which contain reactive alcohol and/or acid groups, mixtures of poly-D (-)-3-hydroxybutyric acid with a polyether being excluded, process for the preparation of a polymer by melting the above m |
| 5213976 |
Process for obtaining a polyhydroxyalkanoate from the cell material of a microogranism |
May 25, 1993 |
| Process for extracting polyhydroxyalkanoates from the cell material of microorganisms by adding an organic solvent for the polyhydroxyalkanoate which is immiscible with water and which has a boiling point of below 100.degree. C., and, if appropriate, by adding water; stirring the res |
| 5183666 |
Pressing not delayed release of active compound, process for its production and use of polyhydro |
February 2, 1993 |
| Pressing containing homo- and/or copolymers of D(-)-3-hydroxybutyric acid, at least one solid disintegrant and at least one solid pharmaceutical active compound, process for its production and the use of homo- and/or copolymers of D(-)-3-hydroxybutyric acid for the production of such a |
| 5149644 |
Process for the release of poly(3-hydroxy carboxylic acids) |
September 22, 1992 |
| Process for releasing poly(3-hydroxy carboxylic acid) granules from cells of Gram-negative bacteria containing the latter, by expression of a cloned natural or chimeric lysis gene, in which, before induction of lysis gene expression, the ionic strength of doubly charged cations is increa |
| 5130444 |
Bismaleimides and their use in preparing polyimides |
July 14, 1992 |
| Bismaleimides of the formula I ##STR1## wherein R denotes a radical of the formula II ##STR2## and polyimides which can be prepared from these bismaleimides, if appropriate with the addition of an aromatic diamine. The polyimides are optionally reinforced with fibers. |
| 5128144 |
Pressing having sustained release of active compound |
July 7, 1992 |
| Pressing having sustained release of active compound for the oral or parenteral administration of medicaments, which contains at least one solid pharmaceutical active compound, polylactic acid and a homo- or copolymer of D(-)-3-hydroxybutyric acid and processes for its production. |
