摘要:
The invention relates to flameproofed, non-dripping polyamide moulding compositions which contain certain amounts ofA) phosphinic acid esters of polyphenols based on phenol-aldehyde/ketone condensates,B) antidripping agents (such as polyfluoroethylene polymers or aramides) andC) zinc borateand if appropriate reinforcing agents and other additives for flameproofing and for processing etc.
摘要:
The subject of the invention is flameproofed, non-dripping polyamide moulding compounds which contain specific amounts of the following:A) Phosphinic acid esters of polyphenols based on phenolaldehyde/ketone condensates,B) Anti-dripping agents (such as polyfluoroethylene polymers or aramides),C) Zinc borate,D) Thermoplastics with a predominantly aromatic main chain and a high thermal deflection temperature (Vicat B.gtoreq.180.degree. C.),and, if applicable, reinforcing agents and other additives for flameproofing and processing.
摘要:
The invention relates to new, free-flowing polyamide molding compounds and blends, characterized in that they are prepared by mixing of polyamides known per se in the melt with low molecular weight, liquid-crystalline esters and/or ester amides corresponding to formula (I) and/or liquid-crystalline, oligomeric esters and/or ester amides corresponding to formula (II) and, optionally, other additives, at least one polymeric blending component being used as a further additive in the case of polyamide blends, and to the use of these liquid-crystalline (LC) additives I and/or II as flow promoters in polyamide molding compounds and blends and to a process for the production of the new polyamide molding compounds and blends. The invention also relates to the new oligomeric esters and/or ester amides corresponding to formula (II).
摘要:
The invention relates to a process for the production of polyamide imides from diimidodicarboxylic acids, trimellitic imidocarboxylic acids and diisocyanates and to their use as moldings, films and binders for paints.
摘要:
Piperidine derivatives of formula ##STR1## can be prepared by reacting 4-amino-piperidine with for example enolic ethers. The compounds obtained may be used as stabilizers.
摘要:
Thermotropic wholly aromatic polyesters containing condensed residues of p-hydroxybenzoic acid, isophthalic and optionally terephthalic acid, hydroquinone and 3.4'- and/or 4.4'-dihydroxy diphenyl, -diphenyl ether and/or -diphenyl sulphide, have excellent mechanical properties and are nevertheless not difficult to process.
摘要:
Thermotropic fully aromatic polyesters which contain radicals of p-hydroxybenzoic acid, iso- and/or terephthalic acid and 2,7-dihydroxynaphthalene condensed therein, having outstanding mechanical properties and accordingly are very easy to process.
摘要:
A polymeric molding compositon based on aliphatic polyamides contains as additives polyarylene sulfides and polyphenolic compounds free from tertiary alkyl group ortho to the phenolic-OH groups is useful in producing molded articles such as films, fibers and shaped objects.
摘要:
Thermotropic fully-aromatic polyesters which contain sulphonic acid and/or metal sulphonate groups bound to the aromatic rings of the polyester, have improved mechanical properties.
摘要:
A process for the production of partially or completely hydrolyzed ethylene/vinyl acetate copolymer which is suitable for the various powder coating techniques, wherein the polymer solution is extruded in a non-gelled state into water with a temperature no more than 20.degree. C below the gellation temperature and the gelling solution is converted into particles from 0.02 to 5 mm in diameter by means of high shear forces.