Polyamide moulding composition and moulded article made from this moulding composition

Patent metadata

Field	Value
Publication number	US-10544286-B2
Application number	US-201515546373-A
Country	US
Kind code	B2
Filing date	Feb 13, 2015
Priority date	Feb 13, 2015
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

The present invention refers to a polyamide moulding composition consisting of the following components: a) 45 to 75% by weight of at least one partially crystalline polyamide consisting of at least one diamine and at least one aromatic dicarboxylic acid, whereupon the at least one diamine has 4 to 18 carbon atoms and is selected from a group of diamines consisting of linear aliphatic diamines, branched aliphatic diamines and cycloaliphatic diamines, b) 5 to 20% by weight of at least one fibrous reinforcing agent, c) 10 to 40% by weight of at least one non-sized filler which is different from the fibrous reinforcing agent in b), d) 0 to 10% by weight of a at least one additive, with the proviso that the component b) and c) add up to 25 to 45% by weight and the entirety of components a) to d) add up to 100% by weight. Moreover, the present invention refers to a moulded article producible from this moulding composition.

First claim

The invention claimed is:

1. A polyamide moulding composition consisting of the following components:
a) 50 to 75% by weight of at least one partially crystalline polyamide consisting of at least one diamine and at least one aromatic dicarboxylic acid, wherein the at least one diamine has 4 to 18 carbon atoms and is selected from the group consisting of linear aliphatic diamines, branched aliphatic diamines, and cycloaliphatic diamines,
b) 5 to 20% by weight of at least one fibrous reinforcing agent,
c) 10 to 40% by weight of at least one non-sized filler which is different from the fibrous reinforcing agent in b), and wherein the at least one non-sized filler is
selected from the group consisting of milled glass fibres, milled carbon fibres, glass flakes, wollastonite, mica, phyllosilicates, and mixtures thereof, or
whiskers, or
is a mixture of at least one non-sized filler selected from the group consisting of milled glass fibres, milted carbon fibres, glass flakes, wollastonite, mica, phyllosilicates, and mixtures thereof; and whiskers, and

d) 0 to 6% by weight of at least one additive,
with the proviso that components b) and c) add up to 25 to 45% by weight and the entirety of components (a) to (d) adds up to 100% by weight,
wherein the moulding compositions a condensable outgassing resulting in a haze of a maximum of 10%, measured by determining the haze on a glass plate after a thermal treatment of pellets of the rob/amide moulding composition at 200° C. for a period of 8 hours.

2. The moulding composition of claim 1 , wherein the moulding composition has a deflection temperature under load (HDT (A)) according to ISO 75 of at least 190° C.

3. The moulding composition of claim 1 , wherein the moulding composition has a condensable outgassing resulting in a haze of maximum of 7%.

4. The moulding composition of claim 1 , wherein the moulding composition has a deflection temperature under load (HDT (A)) according to ISO 75 of at least 190° C. and a condensable outgassing of a maximum of 10%.

5. The moulding composition of claim 1 , wherein the at least one dicarboxylic acid of the partially crystalline polyamide selected from the group consisting of terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, and mixtures thereof.

6. The moulding composition of claim 1 , wherein the at least one partially crystalline polyamide is selected from the group consisting of PA 6T/6I, PA 10T/6T, PA 10T/6T/10I/6I, and mixtures or blends thereof, in an amount of 50 to 69.95% by weight.

7. The moulding composition of claim 1 , wherein the at least one fibrous reinforcing agent are glass fibres in, an amount of 5 to 15% by weight.

8. The moulding composition of claim 1 , wherein the at least one non-sized filler is comprised in an amount of 15 to 35% by weight.

9. The moulding composition of claim 1 , wherein components b) and c) add up to 30 to 44% by weight.

10. The moulding composition of claim 1 , wherein the at least one additive is selected from the group consisting of inorganic stabilisers, organic stabilisers, lubricants, colouring- and marking materials, inorganic pigments, organic pigments, IR absorbers, antistatic agents, antiblocking agents, crystal-growth inhibitors, nucleating agents, condensation catalysts, chain extenders, defoamers, chain-lengthening additives, conductivity additives, carbon black, graphite, carbon nanotubes, mould-release agents, separating agents, flame retardants, non-halogen-containing flame retardants, anti-dripping-agents, impact modifiers, optical brighteners, photochromic additives, metallic pigments, metal coated particles, and mixtures thereof; and wherein the composition comprises the at least one additive in an amount of 0.05 to 6% by weight.

11. A moulded article produced from the moulding composition of claim 1 .

12. The moulded article of claim 11 , wherein the article is a lamp housing, lamp extension, lamp reflector, lamp socket, or a lamp plug socket.

Assignees

• Ems Patent Ag

Inventors

• Nakano Kosuke
• Endo Makoto
• Hatta Minoru

Classifications

• H01R33/00

  Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof · CPC title

• H01R13/46

  Bases; Cases · CPC title

• C08G69/265

  from at least two different diamines or at least two different dicarboxylic acids · CPC title

• C08K3/01

  characterized by their specific function · CPC title

• C08K7/00

  Use of ingredients characterised by shape · CPC title