Polyamide composition for low temperature applications
View Patent ↗A polyamide composition is formed from a low viscosity polyamide-6 and a nucleating agent. The nucleating agent includes an organic material, a first inorganic material and a second inorganic material. Suitable organic materials include organic polymers. Suitable inorganic metallic materials include metal oxides and silicates. The polyamide composition may include polyamide-66 materials and carbon black.
1. A polyamide composition comprising:
at least 95 wt. % of at least one polyamide-6 material;
0.045 wt. % to 0.135 wt. % of polyamide-22;
0.005 wt. % to 0.015 wt. % of alumina silicate;
0.05 wt. % to 0.15 wt. % of an organic modified montmorillonoid clay; and
0.5 wt. % to less than 2 wt. % of at least one lubricant.
2. A polyamide blend comprising: the polyamide composition of claim 1 and at least one polyamide-66 material.
3. The polyamide composition of claim 1 , wherein the lubricant is selected from the group consisting of ethylene-bis-stearamide, zinc stearate, magnesium stearate, calcium stearate, sodium stearate, glycerol monostearate, polydimethylsiloxane, polyolefin, and ethylenevinylacetate copolymers and combinations thereof.
4. A polyamide composition comprising:
about 1 to 99 wt. % nucleated polyamide-6 material, the nucleated polyamide-6 material including:
at least 95 wt. % of at least one polyamide-6 material, based on the total weight of the nucleated polyamide-6 material,
0.045 wt. % to 0.135 wt. % polyamide-22 based on the total weight of the nucleated polyamide-6 material;
0.005 wt. % to 0.015 wt. % of alumina silicate;
0.05 wt. % to 0.15 wt. % of an organic modified montmorillonoid clay; and
0.5 wt. % to less than 2 wt. % of at least one lubricant
about 99 to 1 wt. % polyamide-66 material; and
about 0.001 to about 20 wt. % carbon black.
5. A cable tie produced from the polyamide composition of claim 1 .
6. A cable tie produced from the polyamide composition of claim 4 .
7. The polyamide composition of claim 1 , further comprising an amino functional silicone oil.
8. The polyamide composition of claim 4 comprising about 50 wt. % to about 10 wt. % of the nucleated polyamide-6 material.
9. The polyamide composition of claim 4 comprising about 95 wt. % to about 5 wt. % of the polyamide-66 material.
10. The polyamide composition of claim 1 , wherein the at least one lubricant is selected from the group consisting of: ethylene-bis-stearamide, zinc stearate, magnesium stearate, calcium stearate, and sodium stearate.
11. The polyamide composition of claim 10 , wherein the at least one lubricant is selected from ethylene-bis-stearamide and calcium stearate.
12. The polyamide composition of claim 11 , wherein the at least one lubricant is ethylene-bis-stearamide.
13. A cable tie produced from the polyamide composition of claim 12 .
14. The polyamide composition of claim 1 , further comprising at least one additive selected from the group consisting of: antioxidants, thermal stabilizers, anti-weathering agents, mold releasing agents, pigments, dyes, plasticizers, antistatic agents, flame retardants, glass fillers, mineral fillers and impact modifiers.
15. The polyamide composition of claim 14 , wherein the at least one additive is an antioxidant.
16. A cable tie produced from the polyamide composition of claim 15 .
17. The polyamide composition of claim 1 , wherein the polyamide-6 material has a viscosity less than about 52 FAV.
18. The polyamide composition of claim 17 , wherein the polyamide-6 material has a viscosity between about 25 FAV and about 42 FAV.
19. The polyamide composition of claim 18 , wherein the polyamide-6 material has a viscosity between about 30 FAV and about 42 FAV.
20. A cable tie produced from the polyamide composition of claim 19 .