US 12,110,392 B2
Filled polyamide moulding compounds, moulded articles produced therefrom, and use of the filled polyamide moulding compounds
Arda Alkan, Domat/Ems (CH); Andri Cadalbert, Bonaduz (CH); Andreas Bayer, Domat/Ems (CH); and Botho Hoffmann, Domat/Ems (CH)
Assigned to EMS-CHEMIE AG, Domat/Ems (CH)
Filed by EMS-CHEMIE AG, Domat/Ems (CH)
Filed on Dec. 15, 2021, as Appl. No. 17/551,371.
Claims priority of application No. 20 215 157.7 (EP), filed on Dec. 17, 2020.
Prior Publication US 2022/0195186 A1, Jun. 23, 2022
Int. Cl. C08L 77/06 (2006.01)
CPC C08L 77/06 (2013.01) 12 Claims
 
1. A polyamide moulding compound consisting of:
(A) 27 to 89.99 wt. % of at least one partially crystalline, partially aromatic polyamide (A1) or a polyamide mixture consisting of
(A1) at least one partially crystalline, partially aromatic polyamide, and
(A2) at least one caprolactam-containing polyamide with a content of caprolactam of at least 50 wt. %, different from the partially crystalline, partially aromatic polyamide (A1),
the caprolactam content, in relation to the polyamide mixture, being 5 to 38 wt. %,
(B) 10 to 65 wt. % of at least one filler selected from the group consisting of fibrous or needle-shaped fillers and particulate fillers,
wherein the fibrous or needle-shaped filler is selected from the group consisting of glass fibres, carbon fibres, basalt fibres, boron fibres, slag fibres, metal fibres, whiskers, mineral fibres, wollastonite, aramid fibres, ground glass fibres, ground carbon fibres, ground mineral fibres, and mixtures thereof,
wherein the particulate filler is selected from the group consisting of dolomite, silicates, quartz, talc, mica, kaolin, perlite, silica, precipitated or fumed silicas, diatomaceous earth, titanium dioxide, magnesium carbonate, magnesium hydroxide, aluminum hydroxide, ground or precipitated calcium carbonate, zinc oxide, zinc sulphide, chalk, lime, limestone powder, slate powder, feldspar, barium carbonate, barium sulfate, synthetic phyllosilicates, natural phyllosilicates, permanent-magnetic or magnetizable metals or alloys, glass flakes, glass spheres, hollow glass spheres, hollow-sphere silicate fillers, and mixtures thereof,
(C) 0.01 to 3.0 wt. % of at least one unsubstituted or substituted metallocene, wherein the substituted metallocene can be substituted, once or more than once, at one or both cyclopentadienyl rings, and
(D) 0 to 35 wt. % of at least one additive, wherein the at least one additive is selected from the group consisting of inorganic stabilisers, organic stabilisers, antioxidants, antiozonants, light stabilisers, UV stabilisers, UV absorbers, UV blockers, IR absorbers, NIR absorbers, anti-block agents, nucleation agents, crystallisation accelerators, crystallisation retardants, chain-extending additives, conductivity additives, lubricants, dyes, markers, inorganic pigments, organic pigments, carbon black, graphite, carbon nanotubes, graphene, photochromic agents, antistatic agents, release agents, optical brighteners, metallic pigments, metal flakes, and metal-coated particles,
wherein each of said additive of component (D) is different from component (C),
components (A) to (D) adding up to 100 wt. %.