Abstract: One embodiment of the present invention provides a polyamide powder, which includes polyamide particles having a median grain size d 50 of from 20 to 90 ?m, a content of fines <5 ?m of below 1% by weight, and at least 75% by weight of spherical particles in which all three spatial axes x, y and z of the individual particles have the same dimensions to within ±10%. Other embodiments of the invention provide a process for making and using the powder, and articles coated articles obtained thereby.

Abstract: One embodiment of the present invention provides a polyamide powder, which includes polyamide particles having a median grain size d 50 of from 20 to 90 ?m, a content of fines <5 ?m of below 1% by weight, and at least 75% by weight of spherical particles in which all three spatial axes x, y and z of the individual particles have the same dimensions to within ±10%. Other embodiments of the invention provide a process for making and using the powder, and articles coated articles obtained thereby.

Abstract: One embodiment of the present invention provides a polyamide powder, which includes polyamide particles having a median grain size d 50 of from 20 to 90 ?m, a content of fines <5 ?m of below 1% by weight, and at least 75% by weight of spherical particles in which all three spatial axes x, y and z of the individual particles have the same dimension to within ±10%. Other embodiments of the invention provide a process for making and using the powder, and articles coated articles obtained thereby.

Abstract: A composition containing from 88 to 99.99% by weight of a polyamide, a compound of a polyamide and mixtures of these, and from 0.01 to 0.25% by weight of a flow aid where the drying loss from the flow aid after 5 days of conditioning at a relative humidity of 95% is less than or equal to 1%, determined by ISO 787/2.

Abstract: A sintering powder containing polyamide polymer and titanium dioxide particles, a process for laser sintering, and moldings produced from the sintering powder. The moldings formed using the powder of the invention have improved surface quality due to the powders having increased yellowing resistance when exposed to thermal stress during laser sintering. Moldings produced from the sintering powder have improved mechanical properties, in particular modulus of elasticity.

Abstract: One embodiment of the present invention provides a polyamide powder, which includes polyamide particles having a median grain size d 50 of from 20 to 90 ?m, a content of fines <5 ?m of below 1% by weight, and at least 75% by weight of spherical particles in which all three spatial axes x, y and z of the individual particles have the same dimension to within ±10%. Other embodiments of the invention provide a process for making and using the powder, and articles coated articles obtained thereby.

Abstract: A continuous process for the chromate-free coating of pipes by fluidized-bed coating that includes application of a primer layer, immersion in a fusible polymer coating material and heating by induction.

Abstract: A composition containing from 88 to 99.99% by weight of a polyamide, a compound of a polyamide and mixtures of these, and from 0.01 to 0.25% by weight of a flow aid where the drying loss from the flow aid after 5 days of conditioning at a relative humidity of 95% is less than or equal to 1%, determined by ISO 787/2.

Abstract: A sintering powder containing polyamide polymer and titanium dioxide particles, a process for laser sintering, and moldings produced from the sintering powder. The moldings formed using the powder of the invention have improved surface quality due to the powders having increased yellowing resistance when exposed to thermal stress during laser sintering. Moldings produced from the sintering powder have improved mechanical properties, in particular modulus of elasticity.

Abstract: A laser sintering process produces a body in the shape of a block which contains the desired components and non-irradiated powder which remains with the components in the block until the molding is revealed, or its covering is removed. The non-irradiated powder can be used in a further forming process (recycling) after sieving and addition of virgin powder. The sintering powder includes a polyamide to which organic carboxylic acids have been added as regulators to permit preparation of a polyamide powder with almost constant solution viscosity, capable of repeated use in a laser sintering process without addition of virgin powder.

Abstract: A thermoplastic polymer powder composition which contains a thermoplastic polymer and a laser light-active compound is used for coating of metallic substrates. The resulting coating can be subsequently inscribed using laser light, even after further coating with a finish layer.

Abstract: A dish rack for a dishwasher, including a frame and a coating covering the frame and configured to distribute water over a surface of the coating in a thin film.

Abstract: A process for producing shaped articles are prepared by a process comprising selectively laser sintering a nylon-12 pulverulent material having the following characteristics: Melting point 185-189° C. Enthalpy of fusion 112 ± 17 J/g Solidification point 138-143° C.

Abstract: Fusible adhesives which contain a copolyamide and an isocyanatoisocyanurate obtained by trimerization of isophorone diisocyanate do not undergo crosslinking during melt mixing, exhibit an improved resistance to decomposition during washing and dry cleaning, and are useful for coating textile fastening inserts.

Abstract: N-methylmorpholine-N-oxide is prepared by reacting the azeotrope of methylmorpholine and water with an aqueous solution of hydrogen peroxide. The reaction solution product is thereupon concentrated to the desired content in N-methylmorpholine-N-oxide.

Abstract: A separation of mixtures of water and 2,6-dimethylmorpholine is carried out by rectifying the mixtures at a pressure at the head of the column between 6 and 150 mbars. The separated 2,6-dimethylmorpholine has a maximum water content of 500 ppm by weight and it is possible to achieve for a corresponding design of the rectification water contents of less than 1 ppm by weight of dimethylmorpholine.

Abstract: Powdered polyamide mixtures for use in the heat sealing of textiles by the powder point process. The polyamide homogeneous mixtures contain:(a) about 95 to 40% by weight of at least one copolyamide with a melting point of at least about 110.degree. to 140.degree. C. and having a proportion of a basic lauryllactam monomer component of at least 20% and at most 70% by weight; and(b) about 5 to 60% by weight of at least one copolyamide with a melting point between about 80.degree. to 110.degree. C. and having a proportion of a basic lauryllactam monomer component or lauryllactam and 11-aminoundecanoic acid copolymer of at least 25% and at most 70% by weight, where the percentages are based on the total weight of the copolyamide mixtures.

Abstract: Hot-melt adhesives for articles which come into contact with organic fuels for internal engines comprising binary copolyamides having:A. 50-90 percent by weight of lactams or .omega.-aminocarboxylic acids having at least 10 methylene groups; andB. 50-10 percent by weight of equimolar quantities of aliphatic dicarboxylic acids and of aliphatic or cycloaliphatic diamines in which the total of the methyl, methylene and/or methylidyne groups present is at least 13.The extractable content in the copolyamide hot-melt adhesive is not more than 5 percent by weight as determined after 9 hours in boiling ethanol.

Abstract: Method of spot coating garment interlinings comprising a suspension agent for synthetic resin powders comprising an aqueous emulsion wherein there is contained, in a concentration of about 1-7.5 percent by weight:(A) a mixture of about 95-40 molar percent of an aminoamide of the general formula ##STR1## wherein R represents a saturated or unsaturated hydrocarbon group having 18-19 carbon atoms,n represents an integer of between 2 and 6, andR.sub.1 and R.sub.2 represent alkyl groups having 1-3 carbon atoms; and(B) about 5-60 molar percent of a fatty acid or mineral acid salt of this aminoamide.

Abstract: Suspension agent for synthetic resin powders comprising an aqueous emulsion wherein there is contained, in a concentration of about 1-7.5 percent by weight:(A) a mixture of about 95-40 molar percent of an aminoamide of the general formula ##STR1## wherein R represents a saturated or unsaturated hydrocarbon group having 13-19 carbon atoms,n represents an integer of between 2 and 6, andR.sub.1 and R.sub.2 represent alkyl groups having 1-3 carbon atoms; and(B) about 5-60 molar percent of a fatty acid or mineral acid salt of this aminoamide.