Patent application number | Description | Published |
20090264615 | Process for the Preparation of Oxymethylene Polymers and Apparatus Suitable for This Purpose - A process and an apparatus for the preparation of oxymethylene polymers is described. The process encompasses the polymerization of a monomer that forms oxymethylene groups, if appropriate in the presence of a cyclic acetal, together with an acetal of formaldehyde and with an initiator for cationic polymerization, preferably in a gas-tight kneader or extruder. The temperature profile of the polymerization here is designed in such a way that the polymerization mixture, which is initially heterogeneous by virtue of precipitating polymer, is converted to a homogeneous phase at the end of the polymerization. The homogeneous phase in which the polymer is present in liquid form is stabilized via addition of deactivators. | 10-22-2009 |
20090270572 | Oxymethylene Copolymers and the Use Thereof and Process for the Preparation of Oxymethylene Copolymers - Oxymethylene copolymers having a high proportion of terminal alkyl ether groups and having terminal hydroxyalkylene groups are described. These polymers are distinguished by high thermal stability and high hot water resistance. | 10-29-2009 |
20090270587 | Oxymethylene Polymers, Process for the Preparation Thereof and Use Thereof - Oxymethylene polymers having a bimodal distribution or having a distribution of higher modality and having a targeted content of a low molecular weight fraction of from 1 to 5 percent by mass are described. Moldings of these polymers are distinguished by high low-temperature notched impact strength associated with a high modulus of elasticity. | 10-29-2009 |
20140316147 | Process For The Production of Trioxane - The present invention relates to a process for producing cyclic acetal comprising i) preparing a liquid reaction mixture comprising a) formaldehyde source, b) an aprotic compound and c) a catalyst; and ii) converting the formaldehyde source into cyclic acetals. | 10-23-2014 |
20140323686 | Process for Recycling A Formaldehyde Source During A Polymerization Process - A process for recovering volatile components from an oxymethylene polymer process is disclosed. The volatile components are removed from the process and the formaldehyde collected is converted to a cyclic acetal. The formaldehyde is converted to a cyclic acetal by contacting the formaldehyde with a catalyst in the presence of an aprotic solvent. | 10-30-2014 |
20140329988 | Integrated Process for Producing Cyclic Acetals and Oxymethylene Polymers - A process for producing cyclic acetals is described. A formaldehyde source is contacted with an aprotic compound in the presence of a catalyst to produce the cyclic acetals. The aprotic compound can increase conversion rates and/or efficiency. In one embodiment, the formaldehyde source is obtained from methanol. In particular, methanol can be converted into formaldehyde which is then converted into a cyclic acetal. In one embodiment, the cyclic acetal can then be used to produce oxymethylene polymers. | 11-06-2014 |
20140343300 | Process For The Production Of Trioxane From Aqueous Formaldehyde Sources - The present invention relates to a process for producing cyclic acetal comprising i) preparing a liquid reaction mixture comprising a) a formaldehyde source, b) an aprotic compound and c) a catalyst; wherein the total amount of protic compounds is less than 40 wt.-%, based on the total weight of the reaction mixture; and ii) converting the formaldehyde source into cyclic acetals. | 11-20-2014 |
20140343301 | Process for Producing A Cyclic Acetal - The present invention relates to a process for producing cyclic acetal comprising i) preparing a reaction mixture comprising a) a formaldehyde source in a liquid medium and b) a catalyst; ii) converting the formaldehyde source into cyclic acetals, wherein the final conversion of said formaldehyde source to said cyclic acetal is greater than 10% on basis of the initial formaldehyde source. | 11-20-2014 |
20140343302 | Process for Recycling Polyacetals - A process for recycling polyoxymethylene polymers is disclosed. A polyoyxmethylene polymer is at least partially dissolved in an aprotic compound. The resulting solution or suspension (liquid mixture) is then contacted with a catalyst which causes the polyoxymethylene polymer to be converted into a cyclic acetal. The cyclic acetal can be separated, collected and used in other processes. In one embodiment, the cyclic acetal may be used to produce a polyoxymethylene polymer. | 11-20-2014 |
20140350216 | Process for Producing A Cyclic Acetal In A Heterogeneous Reaction System - A process for producing a cyclic acetal is disclosed. According to the process, a formaldehyde source is combined with an aprotic compound and contacted with a heterogeneous catalyst which causes the formaldehyde source to convert into a cyclic acetal such as trioxane. The catalyst, for instance, may comprise a solid catalyst such as an ion exchange resin. In one embodiment, the process is used for converting anhydrous formaldehyde gas to trioxane. The anhydrous formaldehyde gas may be produced form an aqueous formaldehyde solution by an extractive distillation. | 11-27-2014 |
Patent application number | Description | Published |
20090130135 | HCV VACCINES - Disclosed are methods and compositions for inducing immune responses against Hepatitis C virus (HCV). The compositions comprise one or more epitope from a hotspot epitope. In certain embodiments, an HCV vaccine comprising at least two epitopes, each from a different hotspot epitope, is provided. | 05-21-2009 |
20090155294 | HCV VACCINES - Disclosed are methods and compositions for inducing immune responses against Hepatitis C virus (HCV). The compositions comprise one or more epitope from a hotspot epitope. In certain embodiments, an HCV vaccine comprising at least two epitopes, each from a different hotspot epitope, is provided. | 06-18-2009 |
20090186047 | HCV Vaccinations - The invention relates to a method for preventing or treating Hepatitis C Virus (HCVi) infections, wherein a HCV vaccine comprising an effective amount of at least one HCV T-cell antigen and a polycationic compound comprising peptide bonds is administered to a human individual bi-weekly at least 3 times. | 07-23-2009 |
20100297170 | VACCINES - The invention refers an improved vaccine against infections with pathogens, especially viral pathogens, comprising an antigen, a peptide of the formula R | 11-25-2010 |
20110236414 | Bacterial Polysaccharide-Polypeptide Conjugate Compositions - The present invention relates to improved bacterial polysaccharide-polypeptide conjugate compositions, pharmaceutical compositions comprising such bacterial polysaccharide-polypeptide conjugate compositions, and the use of such compositions. Furthermore, the invention relates to the use of a combination of a peptide of the formula R | 09-29-2011 |
20110300170 | HCV VACCINES - Disclosed are methods and compositions for inducing immune responses against Hepatatis C virus (HCV). The compositions comprise one or more epitope from a hotspot epitope. In certain embodiments, an HCV vaccine comprising at least two epitopes, each from a different hotspot epitope, is provided. | 12-08-2011 |
20120308618 | IC31 NANOPARTICLES - The invention discloses pharmaceutical compositions in liquid form comprising a peptide with the amino acid sequence KLKL | 12-06-2012 |
20130183339 | METHODS AND COMPOSITIONS INVOLVING IMMUNOSTIMULATORY OLIGODEOXYNUCLEOTIDES - Described is an immunostimulatory oligodeoxynucleic acid molecule (ODN) having the structure according to formula (I), wherein any NMP is a 2′ deoxynucleoside monophosphate or monothiophosphate, selected from the group consisting of deoxyadenosine-, deoxyguanosine-, deoxyinosine-, deoxycytosine-, deoxyuridine-, deoxythymidine-, 2-methyl-deoxyinosine-, 5-methyl-deoxycytosine-, deoxypseudouridine-, deoxyribosepurine-, 2-amino-deoxyribosepurine-, -6-S-deoxyguanine-, 2-dimethyl-deoxyguanosine- or N-isopentenyl-deoxyadenosine-monophosphate or -monothiophosphate, NUC is a 2′ deoxynucleoside, selected from the group consisting of deoxyadenosine-, deoxyguanosine-, deoxyinosine-, deoxycytosine-, deoxyuridine-, deoxythymidine-, 2-methyl-deoxyinosine-, 5-methyl-deoxycytosine-, deoxypseudouridine-, deoxyribosepurine-, 2-amino-deoxyribosepurine-, 6-S-deoxyguanine-, 2-dimethyl-deoxyguanosine- or N-isopentenyl-deoxyadenosine, any X is O or S, a and b are integers from 0 to 100 with the proviso that a+b is between 4 and 150, B and E are common groups for 5′ or 3′ ends of nucleic acid molecules, as well as a pharmaceutical composition containing such ODNs. | 07-18-2013 |