Lead free PVC polymer composition resistant to abrasion and high operation temperatures for insulation and sheath of thin-walled automotive cables
AssigneeServicios Condumey
InventorsArturo Hjort Delgado, Alfonso Perez Sanchez
Life of this patent
Estimating the term…
Abstract
A lead free polyvinyl chloride polymer composition for a thin-walled automotive cable insulation and sheath, presenting abrasion strength and thermal resistance at 105° C., characterized in that it consists of a mixture of: a polyvinyl chloride with stabilizing agents, 9 to 11 carbon atom linear co-ester type plasticizers; calcium carbonate load and at least one phenol type antioxidant agent with an oxidized polyethylene type compound.
Claims14
Thin walled automotive cables having a lead free polyvinyl chloride insulation and sheathing composition, said insulation and sheathing composition comprising a blend of:
- a) from about 60 to 100 parts by weight of polyvinyl chloride resin;
- b) from about 1 to 6 parts by weight of a zinc salt based thermal stabilizer;
- c) from about 15 to 50 parts by weight of a linear C9-11 co-ester phthalic plasticizer;
- d) from about 10 to 50 parts by weight of a calcium carbonate filler;
- e) from about 0.2 to 6 parts by weight of an antioxidant, wherein said antioxidant is octadecyl 3,5-di-(tert)-butyl-4-hydroxyhydrocinnamate;
- and
- f) from about 1 to 4 parts by weight of lubricant, said lubricant being an oxidized polyethylene homopolymer wax,
- wherein said thin walled automotive cables are capable of operating at working temperatures of 105 degrees C. and wherein said composition is capable of forming an abrasion resistant cable which when subjected to operating at a temperature of 105 degrees C. for 3000 hours maintains its flexibility at −40 degrees C.
Dependencies are inferred from the claim text.