HEAT ACTIVATED GELS FOR CABLE FILLING APPLICATIONS

摘要

Provided herein is a composition containing a hydrogenated blend of a semi-crystalline, selectively hydrogenated block copolymer, a selectively diblock copolymers lacking semi-crystalline blocks, and a low polarity fluid for cable filling applications. The block copolymer comprises blocks of semi-crystalline hydrogenated polybutadiene, blocks of poly(mono alkenyl arenes), and blocks of hydrogenated, non-crystalline conjugated dienes. The diblock copolymer comprises blocks of poly(mono alkenyl arenes) and blocks of non-crystalline poly(conjugated diene(s)). The compositions can be converted to non-flowable gels and find application as fillers for cables such as fiber optic cables.

主权项

1. A heat activated gel for cable filling comprising:
a) a semi-crystalline, selectively hydrogenated block copolymer having the general formula C-A1-B1 wherein C is a semi-crystalline, hydrogenated block of butadiene having a vinyl content of 15 mol % or less and a molecular weight less than the molecular weight of the A1 block, A1 is a mono-alkenyl arene block, B1 is a non-crystalline, hydrogenated polymer block comprising conjugated diene, b) diblock copolymer having the general formula A2-B2, and c) a low polarity fluid, wherein the semi-crystalline, selectively hydrogenated block copolymer and diblock are dissolved in the low polarity fluid.