摘要:
Thermoplastic molding compositions, comprising A) from 10 to 98% by weight of a thermoplastic polyamide, B) from 0.01 to 20% by weight of a highly branched melamine polymer or melamine-urea polymer, or a mixture of these, C) from 0 to 70% by weight of further additives, where the total of the percentages by weight of components A) to C) is 100%.
摘要:
Thermoplastic molding compositions, comprising A) from 10 to 98% by weight of a thermoplastic polyamide, B) from 0.01 to 20% by weight of a highly branched melamine polymer or melamine-urea polymer, or a mixture of these, C) from 0 to 70% by weight of further additives, where the total of the percentages by weight of components A) to C) is 100%.
摘要:
A process for the production of a lignocellulose-containing material, in which, based in each case on the lignocellulose-containing material: A) from 30 to 95% by weight of lignocellulose particles; B) from 1 to 25% by weight of expanded plastic particles having a bulk density in the range from 10 to 150 kg/m3; C) from 1 to 50% by weight of a binder selected from the group consisting of aminoplast resin, phenol-formaldehyde resin and organic isocyanate having at least two isocyanate groups, and optionally D) additives are mixed and are then pressed at elevated temperature and under elevated pressure, wherein the component B) comprises a formaldehyde scavenger.
摘要翻译:一种用于生产含木素纤维素的材料的方法,其中基于含木素纤维素的材料:A)30至95重量%的木质纤维素颗粒; B)1至25重量%的堆积密度在10至150kg / m 3范围内的发泡塑料颗粒; C)1至50重量%的选自氨基塑料树脂,酚醛树脂和具有至少两个异氰酸酯基团的有机异氰酸酯和任选的D)添加剂的粘合剂混合,然后在升高的温度下压制, 在高压下,其中组分B)包含甲醛清除剂。
摘要:
The present invention relates to a microwave absorbing composition comprising: a) magnetic nanoparticles, dispersed in b) a polymer matrix comprising at least one highly branched polymer comprising nitrogen atoms, a method for the production of such a microwave absorbing composition and the use thereof.
摘要:
An aqueous polishing agent, comprising, as the abrasive, at least one kind of polymer particles (A) finely dispersed in the aqueous phase and having at their surface a plurality of at least one kind of functional groups (al) capable of interacting with the metals and/or the metal oxides on top of the surfaces to be polished and forming complexes with the said metals and metal cations, the said polymer particles (A) being preparable by the emulsion or suspension polymerization of at least one monomer containing at least one radically polymerizable double bond in the presence of at least one oligomer or polymer containing a plurality of functional groups (a1); graft copolymers preparable by the emulsion or suspension polymerization of at least one monomer containing at least one radically polymerizable double bond in the presence of at least one oligomeric or polymeric aminotriazine-polyamine condensate; and a process for the chemical and mechanical polishing of patterned and unstructured metal surfaces making use of the said aqueous polishing agent.
摘要:
A process for the production of a light lignocellulose-containing substance having an average density in the range from 200 to 600 kg/m3, in which, in each case based on the lignocellulose-containing substance:A) from 30 to 95% by weight of lignocellulose particles;B) from 1 to 25% by weight of expanded plastics particles having a bulk density in the range from 10 to 100 kg/m3;C) from 3 to 50% by weight of a binder selected from the group consisting of aminoplast resin, phenol-formaldehyde resin and organic isocyanate having at least two isocyanate groups and, if appropriateD) additivesare mixed and then pressed at elevated temperature and under elevated pressure, wherein the expanded plastics particles are obtained from expandable plastics particles by expansion and the expanded plastics particles thus obtained are further used without further intermediate steps for the production of the light lignocellulose-containing substance.
摘要翻译:一种用于生产平均密度为200-600kg / m 3的轻木质素纤维素物质的方法,其中在每种情况下基于含木素纤维素的物质:A)30至95重量% 的木质纤维素颗粒; B)1至25重量%的堆积密度在10至100kg / m 3范围内的发泡塑料颗粒; C)3至50重量%的选自氨基塑料树脂,酚醛树脂和具有至少两个异氰酸酯基团的有机异氰酸酯的粘合剂,如果合适的话,D)添加剂混合,然后在高温下压制, 在升高的压力下,其中通过膨胀从膨胀塑料颗粒获得发泡塑料颗粒,并且进一步使用由此获得的发泡塑料颗粒,而不需要进一步的中间步骤来生产含轻木质素纤维素的物质。
摘要:
A process for production of an abrasive foam based on a melamine-formaldehyde condensate comprising inorganic nanoparticles, comprising the steps of: (1) preparation of a solution or dispersion comprising a precondensate of the foam to be produced, and also comprising inorganic nanoparticles, (2) foaming of the precondensate via heating of the solution or dispersion from step (1), in order to obtain a foam which comprises inorganic nanoparticles, and also, if appropriate, (3) heat-conditioning of the foam obtained in step (2), leads to improved abrasion in the polishing of delicate surfaces.
摘要:
A light wood-containing material having an average density in the range from 200 to 600 kg/m3, comprising, based in each case on the wood-containing material: A) from 30 to 95% by weight of wood particles; B) from 1 to 25% by weight of a filler having a bulk density in the range from 10 to 150 kg/m3, selected from the group consisting of foamable plastic particles and already foamed plastic particles; C) from 0.1 to 50% by weight of a binder and, if appropriate, D) additives, the following relationship being true for the d′ values according to Rosin-Rammler-Sperling-Bennet of the wood particles A) and of the particles of the filler B): d′ of the particles A) ≦2.5×d′ of the particles B).
摘要翻译:平均密度为200至600kg / m 3的含轻木材的材料包括基于木材的材料:A)30至95重量%的木材颗粒; B)1至25重量%的堆积密度在10至150kg / m 3范围内的填料,其选自可发泡塑料颗粒和已发泡塑料颗粒; C)0.1至50重量%的粘合剂,并且如果合适,D)添加剂,根据木材颗粒A)和木颗粒A)的松香 - 拉姆勒 - 斯珀林 - 班奈特 的填料B):d'颗粒A)≦̸ 2.5×d'的颗粒B)。
摘要:
Flexible, sheet-like substrates having an abrasive surface, which are obtainable by applying an aqueous solution or dispersion of at least one precondensate of a heat-curable resin to the top and/or bottom of a flexible, sheet-like substrate in an amount in the range from 0.1 to 90% by weight, based on the uncoated, dry substrate, crosslinking the precondensate and drying the treated substrate, wherein the aqueous solution or dispersion of at least one precondensate of a heat-curable resin comprises (i) a polymeric thickener selected from the group consisting of biopolymers, associative thickeners and wholly synthetic thickeners in an amount ranging from 0.01% by weight to 10% by weight and optionally (ii) a curative that catalyzes further condensation of the heat-curable resin at from about 60° C.
摘要:
The invention relates to the use of hyperbranched polymers or oligomers comprising terminal primary and/or secondary amino groups as curing agents for epoxy resins. The invention further relates to a composition containing such polymers or oligomers, an uncured or only partially cured epoxy resin, and at least one optional curing agent for epoxy resins, as well as a cured epoxy resin that can be obtained by curing said components. The invention finally relates to a method for curing epoxy resins. In said method, an uncured or only partially cured epoxy resin is brought to a temperature of 5 to 150° C. or is exposed to microwave radiation along with at least one polymer or oligomer according to the definition above and at least one optional conventional curing agent for epoxy resins.