Abstract:
The invention relates to a porous organo-metallic skeleton material for accommodating at least one substance. The skeleton material contains at least one at least bidentate organic compound that is coordinatively bound to at least one metal ion, whereby the skeleton material has, at least in part, pores that contain a polymer, which is suited for adsorbing a substance. The invention also relates to a method for producing the skeleton material, to a method for accommodating at least one substance by the skeleton material, and to the use of the skeleton material, in particular, for storing, separating, controlled release or chemically converting an accommodated substance.
Abstract:
The invention relates to thermoplastic particle foams having cells with a n average cell size in the range of 20 to 500 .mu.m, wherein the cell membra nes have a nanocellular or fibrous structure with pore or fiber diameters of less than 1500 nm. The invention also relates to a method for producing sai d particle foams.
Abstract:
In a process for distillatively removing ammonia and water from mixtures obtained in the preparation of polyamides which comprise a lactam and/or diamines, and, if appropriate, an aminonitrile and/or dinitrile, and also a cyclopentanone impurity in two stages: 1) the mixture is distilled at from 11 to 35 bar to give, as the top product T1, water, ammonia and cyclopentanone, and, as the bottoms B1, water, the lactam and/or diamines, and, if appropriate, the aminonitrile and/or dinitrile, and 2) T1 is distilled at from 11 to 35 bar to give, as the top product T2, ammonia and cyclopentanone, and, as the bottoms B2, water.
Abstract:
A process is proposed for production of low-emission moldings for continuous operating temperatures >50° C. composed of a thermoplastic molding composition comprising A) from 10 to 99.9% by weight of polybutylene terephthalate or a mixture thereof with polyethylene terephthalate and/or polypropylene terephthalate, B) from 0.1 to 50% by weight of at least one terpolymer obtainable from b1) at least one vinylaromatic monomer, b2) at least one C1-C4-alkyl (meth)acrylate or (meth)acrylonitrile, and b3) from 0.1 to 10% by weight, based on the total weight of components b1) to b3), of at least one monomer which comprises an alpha,beta-unsaturated anhydride, and C) from 0 to 60% by weight of other additives, where the total of the percentages by weight of the components (A) to (C) is 100%, via injection molding, which comprises carrying out the injection molding by means of a vented plastifying unit with a cylinder with inlet aperture for the thermoplastic molding composition, with a screw which conveys and plastifies the thermoplastic molding composition within a screw channel, and with one or more vents for discharge of volatile content from the plastified thermoplastic molding composition from the screw channel outward from the vented plastifying unit.
Abstract:
Molding material (A) comprises 10-99.999 (preferably 0.001-10) wt.% of at least a polyoxymethylene (a1) and at least one zeolitic material (b1) with a pore diameter of 0.3-0.5 nm, which is determined according to DIN 66134 and DIN 66135 standards, where the particle size of (b1) is 3-7 mu m in accordance to ISO 13320. An independent claim is also include for the preparation of (A).
Abstract:
The invention relates to a porous organo-metallic skeleton material for accommodating at least one substance. The skeleton material contains at least one at least bidentate organic compound that is coordinatively bound to at least one metal ion, whereby the skeleton material has, at least in part, pores that contain a polymer, which is suited for adsorbing a substance. The invention also relates to a method for producing the skeleton material, to a method for accommodating at least one substance by the skeleton material, and to the use of the skeleton material, in particular, for storing, separating, controlled release or chemically converting an accommodated substance.
Abstract:
In a process for distillatively removing ammonia and water from mixtures obtained in the preparation of polyamides which comprise a lactam and/or diamines, and, if appropriate, an aminonitrile and/or dinitrile, and also a cyclopentanone impurity in two stages: 1) the mixture is distilled at from 11 to 35 bar to give, as the top product T1, water, ammonia and cyclopentanone, and, as the bottoms B1, water, the lactam and/or diamines, and, if appropriate, the aminonitrile and/or dinitrile, and 2) T1 is distilled at from 11 to 35 bar to give, as the top product T2, ammonia and cyclopentanone, and, as the bottoms B2, water.