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Botho Hoffmann, Domat/ems CH

Botho Hoffmann, Domat/ems CH

Patent application numberDescriptionPublished
20090131674POLYMIDE OLIGOMERS AND THEIR USE - The present invention relates to polyamide oligomers with linear or branched chain structure with a number average molar mass of 800 to 5000 g/mol, with basic end groups which are at least partially NH05-21-2009
20100159175POLYAMIDE SHEET SILICATE COMPOSITIONS - The invention relates to polyamide sheet silicate compositions, containing an untreated clay mineral and a water-soluble polyamide, the concentration of the clay material being greater than 30% by weight. Furthermore the invention relates to nanocomposites which contain clay minerals distributed homogeneously in a water-insoluble thermoplastic matrix. These nanocomposites are produced by mixing the polyamide sheet silicate composition and a water-insoluble thermoplastic in the melt.06-24-2010
20100203275TRANSPARENT POLYAMIDE ELASTOMERS - A description is given, together with preferred applications, of a transparent polyamide elastomer of the general structure (I), where R08-12-2010
20110023986POLYAMIDE BLEND MOLDING COMPOUND - Polyamide blend molding compound, includes a polyamide blend content and at least one impact-resistant component, characterized in that the polyamide blend content includes the following polyamides: (A) 20 to 65% by weight of at least one semi-crystalline polyamide with an enthalpy of fusion >40 J/g and with an average of at least 8 C atoms per monomeric unit; (B) 8 to 25% by weight of at least one amorphous and/or microcrystalline polyamide, with the microcrystalline polyamide having an enthalpy of fusion in the range of 4 to 40 J/g, and (C) 1 to 20% by weight of at least one polyamide with an average of a maximum of 6 C atoms per monomeric unit. The impact-resistant component includes as follows: (D) 10 to 40% by weight of a polyamide elastomer which is composed of hard segments and soft segments, with the hard segments being based on lactams and/or amino-carboxylic acids, and (E) 0 to 35% by weight of a non-polyamide elastomer.02-03-2011
20110123749SEMIAROMATIC MOULDING COMPOSITIONS AND USES OF THESE - A polyamide moulding composition with the following constitution is described: 05-26-2011
20110217495POLYAMIDE MOULDING MATERIALS FOR THE PRODUCTION OF MOULDED ARTICLES HAVING REDUCED SURFACE CARBONIZATION - Moulded articles having reduced surface carbonization and longer retention of the mechanical properties and methods of producing same are presented. In an embodiment, the moulded article comprises polyamides with nanofillers, which can be produced by means of injection moulding or extrusion, in particular by extrusion blow moulding, coextrusion blow moulding or sequential blow moulding with and without 3D hose manipulation. For example, the polyamide moulding materials for the production of moulded articles have reduced surface carbonization in the moulded articles in subsequent long-term use at elevated temperatures.09-08-2011
20110229672Hydrolysis-resistant polyamide-elastomer mixtures, molded articles produced therefrom and their use - The invention relates to polyamide-elastomer mixtures with an improved hydrolysis resistance. In this case, the elastomer is present in particular in the form of a microgel. The polyamide-elastomer mixtures according to the invention can be processed into molded articles that are used, for example, in the automobile industry, in particular as media-conducting conduits.09-22-2011
20120000562BRAKE BOOSTER LINE - A partial vacuum brake booster line is produced from a polyamide blend molding compound having a polyamide blend component and an impact resistance component. The polyamide blend component of the polyamide blend molding compound comprises the following polyamides: (A) 25 to 65 wt.-% of at least one partially crystalline polyamide having a melt enthalpy of >01-05-2012

Patent applications by Botho Hoffmann, Domat/ems CH