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Roehm Gmbh patents


Recent patent applications related to Roehm Gmbh. Roehm Gmbh is listed as an Agent/Assignee. Note: Roehm Gmbh may have other listings under different names/spellings. We're not affiliated with Roehm Gmbh, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "R" | Roehm Gmbh-related inventors


Dehydration of alpha-substituted carboxylic acids in the presence of water at high pressures

The present invention describes a process for dehydrating alpha-substituted carboxylic acids in the presence of water at high pressures while avoiding by-products.. . ... Roehm Gmbh

Production of fine-pored pmma foams using nucleating agents

Fine-cell pmma foams are produced using a production process including nucleators in addition to suitable blowing agents. It was found that, surprisingly, a simple-to-produce stable pmma foam having very fine cells and very good properties can be produced.. ... Roehm Gmbh

Production of a pmma foam using cross-linking agents, regulators and blowing agents

The present invention relates to novel types of pmma foams and also to the production thereof. The recipes used in the production process include particularly crosslinkers and chain transfer agents as recipe constituents, mostly in low concentrations, in addition to suitable blowing agents. ... Roehm Gmbh

Evonik Roehm Gmbh

. . ... Roehm Gmbh

Evonik Roehm Gmbh

. . ... Roehm Gmbh

Gold-based catalyst for the oxidative esterification of aldehydes to obtain carboxylic esters

Catalysts for oxidative esterification can be used, for example, fro converting (meth)acrolein to methyl (meth)acrylate. The catalysts are especially notable for high mechanical and chemical stability even over very long time periods, including activity and/or selectivity relatively in continuous operation in media having even a small water content.. ... Roehm Gmbh

Evonik Roehm Gmbh

. . ... Roehm Gmbh

Use of core-shell(-shell) particles in the binder jetting process

A three-dimensional object is formed by 3d printing, especially by a binder jetting method, in which particulate material in a powder bed is bonded by a printed adhesive. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. ... Roehm Gmbh

Drilling chuck

A drilling chuck for operation on an impact drilling spindle, which can be subjected to tangential loading, with a chuck body, which is connected or connectable to the impact drilling spindle in which jaw guides are formed, which run inclined to the chuck axis in which jaw guides and clamping jaws are guided, which can be adjusted by a threaded ring, with a clamping sleeve, which can be coupled in a torque-transmitting manner to the threaded ring, and with a locking device, which is adjustable between a release configuration, which enables a relative rotation of the threaded ring with respect to the chuck body and a locking configuration, which obstructs or prevents this relative rotation. The locking device is formed from a locking sleeve, which is mounted essentially rotationally fixed but axially displaceable with respect to the chuck body, which comprises at least one locking member.. ... Roehm Gmbh

Drilling chuck

A drilling chuck for operation on an impact drilling spindle, which can be subjected to tangential loading, with a chuck body, which is connected or connectable to the impact drilling spindle in which jaw guides are formed, which are arranged inclined to the chuck axis, in which clamping jaws are guided which can be adjusted by means of a threaded ring, with a clamping sleeve, which is coupled in a torque-transmitting manner to the threaded ring, and with a locking device, which is adjustable between a release configuration which enables a relative rotation of the threaded ring with respect to the chuck body, and a locking configuration which obstructs or prevents this relative rotation. The locking device is formed from a locking sleeve, which is essentially rotationally fixed but axially displaceable with respect to the chuck body, which locking sleeve comprises at least one locking member.. ... Roehm Gmbh

Directly adhering, transparent heat-sealable binder for the coating and sealing of transparent plastics foils

A transparent, heat-sealable coating for transparent pet packaging foils can be provided by using a heat-sealable lacquer based on styrene-containing copolymers, on poly(meth)acrylates, on at least one polyester and optionally on a tackifier, and also the process for the sealing of a foil coated with this lacquer. It is surprising here that, despite the use of a rubber based on styrene-containing polymers that is not optically compatible with polyesters and polymethacrylate, the transparency of the heat-sealable coatings is still very high.. ... Roehm Gmbh

Production of a plurality of different fiber composite components for high volumes in a continuous process

The present invention relates to a novel process for the production of novel fibre-reinforced profile materials filled with a rigid foam core, especially a pmi foam core. In particular, the present invention relates to a novel process which, in various versions, provides a particularly high throughput and allows a very wide range of shaping options. ... Roehm Gmbh

Nanoparticle

The invention refers to a nanoparticle with a diameter which is the maximum in the nanoparticle size distribution, in the range of 10-300 nm, comprising a) a calcium phosphate nanoparticle core a), b) an active ingredient coating b) on the calcium phosphate nanoparticle core a), c) a lactic acid polymer coating c) on the active ingredient coating b), d) a cationic polymer coating d) on the lactic acid polymer coating c) selected from the group of polyethylene-imines, chitosan and human lactoferrin-derived peptides with a length of 14 to 30 amino acids.. . ... Roehm Gmbh

Optimized process for preparing methacrylic acid

The present invention relates to an optimized process for preparing methacrylic acid, wherein methacrolein is prepared in a first stage from propionaldehyde and formaldehyde by means of a mannich reaction and oxidized in a second stage to methacrylic acid. More particularly, the present invention relates to the reduction in the amounts of catalyst to be used in the first stage, especially to the reduction in the amounts of acid to be used here, by virtue of the additional installation of recycling streams suitable for the purpose.. ... Roehm Gmbh

10/26/17 / #20170304211

Pharmaceutical or nutraceutical composition with resistance against the influence of ethanol

A pharmaceutical or nutraceutical composition, contains a) a core a), containing a pharmaceutical or a nutraceutical active ingredient and b) a coating layer b), containing a mixture of 80 to 96% by weight of a water-insoluble (meth)acrylate polymer and 4 to 20% by weight of guar gum, wherein the water-insoluble (meth)acrylate polymer contains polymerized units of more than 95 and up to 100% by weight c1-c4-alkyl esters of acrylic acid or of methacrylic acid and less than 5% by weight of acrylic acid or methacrylic acid.. . ... Roehm Gmbh

10/05/17 / #20170283364

Method for preparing alpha-hydroxycarboxylic acid esters in which ammonia is recycled

The present invention relates to a process for preparing alpha-hydroxycarboxylic esters proceeding from hydrogen cyanide, wherein the ammonia formed in the step of alcoholysis of the corresponding alpha-hydroxycarboxamide is recycled into a hydrogen cyanide preparation process after a purification step.. . ... Roehm Gmbh

08/10/17 / #20170226370

Reactive resin sealing for low-contaminant cold plastic markings

The present invention encompasses a novel soil-repellent reactive resin seal for markings or coating of areas of ground or trafficways, for example roads, based on cold plastic. Compared to established prior art systems, this sealing leads to reduced adhesion of soil, especially in hot and/or dry, dusty environments. ... Roehm Gmbh

07/13/17 / #20170197391

Three-layer uv protective film for decorative laminated sheets (hpl)

The present invention relates to novel films for application on materials as protective film in respect of weathering effects. In particular, the present invention relates to a novel film composite which has at least three layers and which features particularly good adhesion on the substrate and particularly good optical properties. ... Roehm Gmbh

05/18/17 / #20170136665

Pressure-dependent foam moulding of poly(meth)acrylimide particles in closed moulds for producing rigid foam cores

The invention relates to a process for the production of mould-foamed poly(meth)acrylimide (p(m)i) cores, in particular of polymethacrylimide (pmi) cores, which can be used by way of example in automobile construction or aircraft construction. A feature of this process is that polymer granules or polymer powder preheated under pressure are moreover charged under pressure to a compression mould where they are foamed with depressurization. ... Roehm Gmbh

04/13/17 / #20170101322

Method for separating ammonia out of an alcoholic solution in the presence of carbonic acid compounds

The present invention describes a method of removing ammonia from alcoholic solution in the presence of carbonic acid compounds while avoiding fouling by supplying the solution to be separated to the upper part of a distillation column and adjusting the temperature at the introduction point such that the ammonium salts of the carbonic acid compound in question are soluble in the in question at the top of the distillation column under the operating conditions.. . ... Roehm Gmbh

03/30/17 / #20170087750

Foam moulding poly(meth)acrylimide particles in closed moulds for producing rigid foam cores

The invention relates to a process for the production of mould-foamed poly(meth)acrylimide (p(m)i) cores, in particular of polymethacrylimide (pmi) cores, which can be used by way of example in automobile construction or aircraft construction. A feature of this process is that polymer granules or polymer powder are charged to a compression mould where they are foamed. ... Roehm Gmbh

01/26/17 / #20170022142

Method for the production of high-purity glycerol dimethacrylate

The present invention claims a process for preparing high-purity glycerol dimethacrylate comprising <500 ppm of glycidyl methacrylate, characterized in that an aftertreatment with acidic adsorbent is effected.. . ... Roehm Gmbh








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