Abstract:
Transparent polyamides are produced by polycondensing mixtures of isomeric amino-methyl amino-propyl norbornanes or mixtures thereof with aliphatic, cycloaliphatic, aromatic or aromatic aliphatic diamines and aliphatic, cycloaliphatic or aromatic dicarboxylic acids or mixtures of the said dicarboxylic acids with amino carboxylic acids.
Abstract:
There are disclosed and claimed novel polyamides having improved properties such as high transparency and second order transition temperatures in combination with good mechanical and electrical properties at relatively high temperatures. These polyamides are derived from bis-aminomethyl-norbonanes and aliphatic or cycloaliphatic or aromatic or aromaticaliphatic diamines, aliphatic or aromatic dicarboxylic acids. and amino carboxylic acids.
Abstract:
The invention relates to mixture composed essen- tially of polyoxymethylene and of 5 to 60% by weight of a polyurethane, the polyurethane being built up exclus- ively from aliphatic components and having an elongation at break of 800 - 1,500% and a Shore hardness A not ex- ceeding 81. The shaped articles produced from the mixture according to the invention are distinguished, above all, by an improved notched impact strength and by matt sur- faces.
Abstract:
Abstact of the disclosure: The invention relates to mixtures essentially composed of a polyoxymethylene, a polyurethane and a filler, the polyurethane having a Shore hardness A of not more than 90 and the filler having an average particle size less than 10 .mu.m. The shaped articles produced from the mixture according to the invention are distinguished, above all, by improved notched impact strength.
Abstract:
Process for obtaining transparent polyamides by polycondensation of diamines and dicarboxylic acids, or of their amide-forming derivatives, in a manner known per se and under ordinary conditions, characterized in that: A) mixtures of bis-aminomethyl-norbornane isomers of the formulas ** (see formula) ** B) one or more aliphatic (s) or cycloaliphatic dicarboxylic acid (s) with 2 to 20 carbon atoms or aromatic (s) dicarboxylic acid (s) such as 7 to 20 carbon atoms or mixtures of such acids, As well as C) one or more aliphatic (s) or cycloaliphatic diamine (s) with 2 to 20 carbon atoms or aromatic diamine (s) with 6 to 20 carbon atoms or aromatic-aliphatic diamine (s) ( s) with 7 to 20 carbon atoms, or mixtures of such diamines, O well D) one or more aminocarboxylic acid (s) and/or its lactam (s) or One or more of the diamines mentioned under c) and one or more amino carboxylic acid (s), or their lactam (s). (Machine-translation by Google Translate, not legally binding)
Abstract:
Process for obtaining transparent polyamides by polycondensation of diamines and dicarboxylic acids, or of their amide-forming derivatives, in a manner known per se and under ordinary conditions, characterized in that: A) mixtures of bis-aminomethyl-norbornane isomers of the formulas ** (see formula) ** B) one or more aliphatic (s) or cycloaliphatic dicarboxylic acid (s) with 2 to 20 carbon atoms or aromatic (s) dicarboxylic acid (s) such as 7 to 20 carbon atoms or mixtures of such acids, As well as C) one or more aliphatic (s) or cycloaliphatic diamine (s) with 2 to 20 carbon atoms or aromatic diamine (s) with 6 to 20 carbon atoms or aromatic-aliphatic diamine (s) ( s) with 7 to 20 carbon atoms, or mixtures of such diamines, O well D) one or more aminocarboxylic acid (s) and/or its lactam (s) or One or more of the diamines mentioned under c) and one or more amino carboxylic acid (s), or their lactam (s). (Machine-translation by Google Translate, not legally binding)