Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1992-10-15
2000-08-29
Short, Patricia A.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
428379, 428391, 385123, 385145, 525425, 525444, 525446, B32B 1502, B32B 1508, G02B 602
Patent
active
061105929
ABSTRACT:
Method for the preparation of a polymeric mixture for cable insulators and coatings and sheaths for optic fiber cables; polymeric mixture thus produced and the cables containing it.
The method is characterized in that one completely mixes, up to the obtainment of a homogeneous composition, (i) from 50 to 80 parts (w/w) of a first thermoplastic polymer which is amorphous, highly resistant to flames and combustion, and consists of an aromatic polyester of isophthalic and terephthalic acid with bisphenol A, and (ii) from 20 to 50 parts (w/w) of at least a second thermoplastic polymer consisting of an elastomeric polyether-ester block copolymer, having a Shore D hardness greater than 50 and a Vicat softening point greater than 170.degree. C., for a mixing time less than 10 minutes.
REFERENCES:
patent: 4286075 (1981-08-01), Robeson et al.
patent: 4690997 (1987-09-01), Cella
Chemicals Abstracts vol. 111, No. 20, Nov. 13, 1989, Columbus, Ohio, US; abstract No. 175763.
Castellani Luca
Grizante Redondo Eduardo
Zaopo Antonio
Pirelli Cavi S.p.A.
Short Patricia A.
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