Dsm IP Assets B.v.

Other

Paulus A M Steeman

Marko Dorschu

Johannes Adrianus Van Eekelen

Markus J H Bulters

Adrianus G M Abel

Alexander A M Stroeks

Gerrit Rekers

Philippe W P V Bleiman

Jozef M H Linsen

Detlef Schulze-Hagenest

Johannes W H Handels

Tosko A Misev

Burkard Huber

Jorg Buchweitz

The invention relates to coated optical fibers comprising soft primary coatings and to such primary coatings for protecting glass optical fibers having a sufficient high resistance against cavitation. In particular, the primary coatings have a cavitation strength at which a tenth cavitation appears (&#x3c3;) of at least about 1.0 MPa as measured at a deformation rate of 0.20% minand of at least about 1.4 times their storage modulus at 23&#xb0; C. The coating preferably shows strain hardening in a relative Mooney plot, preferably has a strain energy release rate Go of about 20 J/mor more, and preferably has a low volumetric thermal expansion coefficient. The invention furthermore provides a method and apparatus for measuring the cavitation strength of a primary coating.

Coated optical fibers

Process for coating a substrate with a powder paint composition

Growing community of inventors

Geleen, Netherlands

Paulus A M Steeman