摘要:
The present invention relates to a process for preparing branched polyethers and/or polyether-like structures, to these branched polyethers themselves, and to their use.
摘要:
The present invention relates to polysiloxane polyether copolymers which comprise at least one (polyether) moiety which comprises at least one unit —O—C(O)—O—, to a process for the production of the polysiloxane polyether copolymers, and also to the use of the polysiloxane polyether copolymers as stabilizers in the production of polyurethane foams, and also to polyurethane foams and items therefrom which are obtainable through the process.
摘要:
A process for production of polyurethane foams having a density of below 24.0 kg/m3 is provided. The process includes utilizing a silicone-polyether block copolymer comprising a polyorganosiloxane which includes at least one polyether moiety. The polyorganosiloxane has attached to it at least one non-endcapped polyether moiety having a molecular weight of not less than 4500 g/mol. Polyurethane foams and articles which are obtainable by the process of the present invention are also disclosed.
摘要:
The invention relates to a method for producing fatty acid alkanol amides by reacting at least one amine that contains at least one primary or secondary amino group and at least one hydroxyl group with at least one fatty acid to form an ammonium salt, said ammonium salt being subsequently converted into the alkanol amide by means of microwave radiation.
摘要:
The present invention relates to polysiloxane polyether copolymers which comprise at least one (polyether) moiety which comprises at least one unit —O—C(O)—O—, to a process for the production of the polysiloxane polyether copolymers, and also to the use of the polysiloxane polyether copolymers as stabilizers in the production of polyurethane foams, and also to polyurethane foams and items therefrom which are obtainable through the process.
摘要:
The invention relates to a catalyst system suitable for catalysis of the production of polyurethane systems, which is characterized in that the catalyst system contains a tin salt of neodecanoic acid.
摘要:
The present invention relates to a process for preparing branched polyethers and/or polyether-like structures, to these branched polyethers themselves, and to their use.
摘要:
Silicone-polyether block copolymer comprising a polyorganosiloxane which includes at least one polyether residue having a molecular weight of not less than 5000 g/mol, and wherein a weight average molecular weight of all polyether residues attached to the polyorganosiloxane by a chemical bond is above 3000 g/mol, its production and use and also compositions and polymeric articles obtained therewith.
摘要翻译:包含聚有机硅氧烷的聚硅氧烷 - 聚醚嵌段共聚物,其包含至少一种分子量不小于5000g / mol的聚醚残基,并且其中通过化学键连接到聚有机硅氧烷上的所有聚醚残基的重均分子量大于3000 g / mol,其生产和使用以及由其获得的组合物和聚合物制品。
摘要:
The invention relates to a method for producing alkaline amides or imides of ethylenically unsaturated C3 to C6 carboxylic acids by reacting amines that contain at least one primary and/or secondary amino group and at least one tertiary amino group with ethylenically unsaturated C3 to C6 carboxlic acids to form an ammonium salt and said ammonium salt is subsequently converted into the alkaline amide or imide by means of microwave radiation, with the proviso that the primary and/or secondary amino group is devoid of alkoxy groups.
摘要:
A catalyst system which is suitable for catalyzing the production of polyurethane systems is provided. The catalyst system contains a metal salt of a carboxylic acid to whose carbonyl carbon a hydrogen atom or a hydrocarbon radical is bound, with the proviso that the carboxylic acid does not have exclusively a single ethyl or n-propyl branch in the 2 position.