Honeywell International Inc.

John Hermes

John Armstrong Young

Thomas Y Tam

Norman Aminuddin

Qiang Zhou

Charles Arnett

Thomas Yiu-Tai Tam

Thomas Y-t Tam

Provided are continuous filament-based elongate bodies having improved durability and bending fatigue performance. The elongate bodies are formed from a plurality of fibers where at least one component fiber is a multifilament ultra-high molecular weight polyolefin fiber having a filament intrinsic viscosity (IV) of from 15 dl/g to about 45 dl/g when measured in decalin at 135&#xb0; C., wherein said at least one multifilament ultra-high molecular weight polyolefin fiber has a tenacity of at least 32 g/denier, a denier of greater than 800, and a denier per filament of greater than 2.0. The high tenacity combined with high fiber denier and high filament denier (dpf) enhances the cyclic bend over sheave (CBOS) durability when the elongate body is incorporated in a multi-fiber construction such as a rope.

HMPE fiber with improved bending fatigue performance

Multi-filament UHMW PE yarns can be produced according to processes that result in improved properties. The UHMW PE can have an intrinsic viscosity in decalin at 135&#xb0; C. of at least about 30 dl/g, and can be processed under optimal conditions to achieve a gel spun yarn having a tenacity of greater than about 45 g/d (40.5 g/dtex).

Ultra-high strength UHMW PE fibers and products

Multi-filament ultra high molecular weight polyethylene fibers can be produced according to processes that result in improved properties. The ultra high molecular weight polyethylene can have an intrinsic viscosity in decalin at 135&#xb0; C. of at least about 30 dl/g, and can be processed under optimal conditions to achieve a gel spun fiber having a tenacity of greater than about 45 g/denier (40.5 g/dtex).

Ultra-high strength UHMWPE fibers and products

A process for preparing ultra-high molecular weight poly(alpha-olefin) (UHMWPO) multi-filament yarns having improved tensile properties at higher productivity. The process includes drawing a solution yarn, then drawing a gel yarn and then drawing a dry yarn continuously in sequence to form a partially oriented yarn, winding up the partially oriented yarn, unrolling the yarn, drawing the partially oriented yarn to form a highly oriented yarn, cooling the highly oriented yarn under tension and winding up the highly oriented yarn.

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Colonial Heights, VA, United States of America

John Hermes