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US 2003/0144390 A1Published application
Pigmented cable jacket comprising colour pigments
AssigneeBorealis Technology Oy
InventorsRuth Dammert, Magnus Nilsson, Magnus Persson
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AssigneeBorealis Technology Oy
InventorsRuth Dammert, Magnus Nilsson, Magnus Persson
Estimating the term…
The invention relates to a pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin, preferably polyethylene, 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-recrystallisation 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-recrystallisation method. Further, the invention relates to the use of a colour 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 colour 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 colour pigment wherein said pigment is a non-warping pigment.
A pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin, preferably polyethylene, 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-recrystallisation 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-recrystallisation method.
A pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin, preferably polyethylene, and a pigment composition comprising a colour pigment wherein said cable jacket if produced by co-extrusion of said polymer composition and said pigment composition at an extrusion temperature of 210° C. and a cooling temperature of 23° C. is having a shrinkage at 100° C./24 h which is at most 30% higher, more preferred at most 20% higher and still more preferred at most 10% higher than the shrinkage at 100° C./24 h of a cable jacket produced by extrusion of said polymer composition only under equal conditions.
A pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin, preferably polyethylene, and a pigment composition comprising a colour pigment wherein said pigment is a non-warping or low-warping pigment.
A pigmented cable jacket according to any of the preceding claims wherein the multimodal polyolefin is a bimodal polyethylene.
A pigmented cable jacket according to any of the preceding claims wherein the multimodal polyethylene has been produced in a multistage process.
A pigmented cable jacket according to any of the preceding claims wherein said pigment is added as a masterbatch comprising at most 25 wt %, more preferably at most 15 wt % of the pigment.
A process for the production of a pigmented cable jacket according to any of the preceding claims wherein the cable jacket is produced by co-extrusion of said polymer composition and said pigment composition.
Use of a colour pigment for the production of a pigmented cable jacket comprising a polymer composition which comprises a multimodal polyolefin, preferably polyethylene, and a pigment composition comprising said colour pigment wherein said pigment is a non-warping pigment.
Use of a multimodal polyolefin, preferably polyethylene, for the production of a pigmented cable jacket comprising a polymer composition which comprises said multimodal polyolefin and a pigment composition comprising a colour pigment wherein said pigment is a non-warping pigment.
Dependencies are inferred from the claim text.