Thermoplastic polyurethane material with enhanced fluid immersion and water absorption capabilities
View Patent ↗Compositions for use as cable coverings, e.g. insulation or jacket, are described. The compositions contain a base polymer having (a) a thermoplastic polyurethane (TPU); (b) a chlorinated flame retardant; and (c) an antimony flame retardant.
1. A composition consisting of a thermoplastic polyurethane (TPU), a chlorinated flame retardant, an antimony flame retardant, a phenolic antioxidant, a UV light stabilizer, a hindered amine light stabilizer (HALS), and a filler, wherein the chlorinated flame retardant is 1,2,3,4,7,8,9,10,13,13,14,14-dodecachloro-1,4,4a,5,6,6a,7,10,10a,11,12,12a -dodecahydro-1,4,7,10-dimethanodibenzo (a,e) cyclooctene.
2. The composition of claim 1 , wherein the TPU is polyether.
3. The composition of claim 1 , wherein the antimony flame retardant is antimony trioxide.
4. The composition of claim 1 , wherein the TPU is present at about 68-81% (w/w).
5. The composition of claim 1 , wherein the chlorinated flame retardant is present at about 15-25% (w/w).
6. The composition of claim 1 , wherein the antimony flame retardant is present at about 1-4% (w/w).
7. The composition of claim 1 , wherein the phenolic antioxidant is present at about 0.1-0.5% (w/w).
8. The composition of claim 1 , wherein the UV light stabilizer is present at about 0.2-0.6% (w/w).
9. The composition of claim 1 , wherein the HALS is present at about 0.1-0.4% (w/w).
10. The composition of claim 1 , wherein the filler is present at about 0.5-2.0% (w/w).
11. A cable comprising a conductor; and an insulation or a jacket covering the conductor, said jacket consists of a thermoplastic polyurethane (TPU), a chlorinated flame retardant, and an antimony flame retardant, a phenolic antioxidant, a UV light stabilizer, a hindered amine light stabilizer (HALS), and a filler, wherein the chlorinated flame retardant is 1,2,3,4,7,8,9,10,13,13,14,14-dodecachloro-1,4,4a,5,6,6a,7,10,10a,11,12,12a -dodecahydro-1,4,7,10-dimethanodibenzo (a,e) cyclooctene.
12. The cable of claim 11 , wherein the TPU is polyether.
13. The cable of claim 11 , wherein the antimony flame retardant is antimony trioxide.
14. The cable of claim 11 , wherein the TPU is present at about 68-81% (w/w).
15. The cable of claim 11 , wherein the chlorinated flame retardant is present at about 15-25% (w/w).
16. The cable of claim 11 , wherein the antimony flame retardant is present at about 1-4% (w/w).
17. The cable of claim 11 , wherein the phenolic antioxidant is present at about 0.1-0.5% (w/w).
18. The cable of claim 11 , wherein the UV light stabilizer is present at about 0.2-0.6% (w/w).
19. The cable of claim 11 , wherein the HALS is present at about 0.1-0.4% (w/w).
20. The cable of claim 11 , wherein the filler is present at about 0.5-2.0% (w/w).