Pigmented cable jacket comprising color pigments
View Patent ↗The invention relates to a pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin, preferably polyethylene, and pigment composition comprising a color pigment wherein a blend of said pigment composition and said polymer composition is showing an average diameter of spherulites as determined according to the dissolution-recrystallization method which is at most 50% lower, more preferred at most 30% lower and still more preferred at most 10% lower than the average diameter of spherulites in the non-blended polymer composition as determined according to the dissolution-recrystallization method. Further, the invention relates to the use of a color pigment for the production of such a pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin, preferably polyethylene, and a pigment composition comprising said color pigment wherein said pigment is a non-warping pigment and to the use of a multimodal polyolefin, preferably polyethylene, for the production of such a pigmented cable jacket comprising a polymer composition which comprises said multimodal polyolefin and a pigment composition comprising a color pigment wherein said pigment is a non-warping pigment.
1. A pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin and pigment composition comprising a colour pigment wherein a blend of said pigment composition and said polymer composition is showing an average diameter of spherulites as determined according to the dissolution-recrystallization method which is at most 50% lower than the average diameter of spherulites in the non-blended polymer composition as determined according to the dissolution-recrystallisation method.
2. A pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin and a pigment composition comprising a colour pigment wherein said cable jacket is produced by co-extrusion of said polymer composition and said pigment composition at an extrusion of 210° C. and a cooling temperature of 23° C. having a shrinkage at 100° C./24 h which is at most 30% higher than the shrinkage at 100° C./24 h of a cable jacket produced by extrusion of said polymer composition only under equal conditions.
3. A pigmented jacket comprising a polymer composition which comprises a multimodal polyolefin, and a pigment composition comprising a colour pigment wherein said pigment is a non-warping or low-waving pigment.
4. A pigmented cable jacket according to claim 1 wherein the average diameter of spherulites as determined according to the dissolution-recrystallisation method of said blend of said pigment composition and said polymer composition is 5 microns or more.
5. A pigmented cable jacket according to claim 1 wherein the jacket is having a total shrinkage of 1.8% or less at 100° C./24 h.
6. A pigmented cable jacket according to claim 1 wherein the multimodal polyolefin is a bimodal polyethylene.
7. A pigmented cable jacket according to claim 1 wherein the multimodal polyethylene has been produced in a multistage process.
8. A pigmented cable jacket according to claim 1 wherein said pigment is added as a masterbatch comprising at most 25 wt % of the pigment.
9. A process for the production of a pigmented cable jacket according to claim 1 wherein the cable jacket is produced by co-extrusion of said polymer composition and said pigment composition.
10. A process for the production of a pigmented jacket comprising blending a polymer composition which comprises a multimodal polyolefin, and a pigment composition comprising a colour pigment wherein said pigment is a non-warping pigment.
11. A process for the production of a pigmented jacket comprising blending a polymer composition according to claim 3 which comprises said multimodal polyolefin and a pigment composition comprising a colour pigment wherein said pigment is a low-warping pigment.
12. A pigmented cable jacket according to claim 2 wherein the average diameter of spherulites as determined according to the dissolution-recrystallisation method of said blend of said pigment composition and said polymer composition is 5 microns or more.
13. A pigmented cable jacket according to claim 2 wherein the jacket is having a total shrinkage of 1.8% or less at 100° C./24 h.
14. A pigmented cable jacket according to claim 2 wherein the multimodal polyolefin is a bimodal polyethylene.
15. A pigmented cable jacket according to claim 2 wherein the multimodal polyethylene has been produced in a multistage process.
16. A pigmented cable jacket according to claim 2 wherein said pigment is added as a masterbatch comprising at most 25 wt % of the pigment.
17. A process for the production of a pigmented cable jacket according to claim 2 wherein the cable jacket is produced by co-extrusion of said polymer composition and said pigment composition.
18. A pigmented cable jacket according to claim 3 wherein the jacket is having a total shrinkage of 1.8% or less at 100° C./24 h.
19. A pigmented cable jacket according to claim 3 wherein the multimodal polyolefin is a bimodal polyethylene.
20. A pigmented cable jacket according to claim 3 wherein the multimodal polyethylene has been produced in a multistage process.
21. A pigmented cable jacket of claim 1 wherein the average diameter of spherulites is at most 30% lower than the average diameter of spherulites in the non-blended polymer composition.
22. A pigmented cable jacket of claim 1 wherein the average diameter of spherulites is at most 10% lower than the average diameter of spherulites in the non-blended polymer composition.
23. A pigmented cable jacket of claim 2 wherein the shrinkage at 100° C./24 h is at most 20% higher than the shrinkage at 100° C./24 h of a cable jacket produced by extrusion of said polymer only under equal conditions.
24. A pigmented cable-jacket of claim 2 wherein the shrinkage at 100° C./24 h is at most 10% higher than the shrinkage at 100° C./24 h of a cable jacket produced by extrusion of said polymer only under equal conditions.
25. A pigmented jacket according to claim 3 wherein said polyolefin is polyethylene.
26. A pigmented cable jacket according to claim 4 wherein the average diameter of spherulites is 10 microns or more.
27. A pigmented cable jacket according to claim 4 wherein the average diameter of spherulites is 15 microns or more.
28. A pigmented cable jacket according to claim 5 wherein the jacket is having a total shrinkage of 1.5% or less at 100° C./24 h.
29. A pigmented cable jacket according to claim 5 wherein the jacket is having a total shrinkage of 1.2% or less at 100° C./24 h.
30. A pigmented cable jacket according to claim 8 wherein said pigment is added as a masterbatch comprising at most 15% of the pigment.
31. A pigmented cable jacket according to claim 12 wherein the average diameter of spherulites is 10 microns or more.
32. A pigmented cable jacket according to claim 12 wherein the average diameter of spherulites is 15 microns or more.
33. A pigmented cable jacket according to claim 13 wherein the jacket is having a total shrinkage of 1.5% or less at 100° C./24 h.
34. A pigmented cable jacket according to claim 13 wherein the jacket is having a total shrinkage of 1.2% or less at 100° C./24 h.
35. A pigmented cable jacket according to claim 16 wherein said pigment is added as a masterbatch comprising at most 15% wt % of the pigment.
36. A pigmented cable jacket according to claim 18 wherein the jacket is having a total shrinkage of 1.5% or less at 100° C./24 h.
37. A pigmented cable jacket according to claim 18 wherein the jacket is having a total shrinkage of 1.2% or less at 100° C./24 h.