CPVC PIPE WITH 25% HIGHER HYDROSTATIC DESIGN BASIS THAN REQUIRED UNDER ASTM D2846

World Intellectual Property Organization Patent

APP PUB NO WO-2009058768-A1
SERIAL NO

PCTUS2008081436

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Abstract

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CPVC pipe in diameters in the range from 15 mm (0.5 inch) to 15.24 cm (6 ins), to carry hot and cold aqueous streams under 690 KPa (100 psi) pressure and 82.2°C (180°F) in continuous service, is extruded from a compound in which the CPVC has a high CI content in range from 66.5%-70%, when modified with either of two specific impact high rubber modifiers in an amount greater than 5 parts but no more than 6 parts per 100 parts of CPVC. Extruded CPVC pipe provides a HDB measured according to ASTM D2837-01 which is 25% or more greater than that required for commercial pipe as specified in ASTM D2846. As a result, both SDR-11 and SDR-13.5 pipe are produced which provide a HDB greater than 1250 psi (8.62 MPa) at the 100,000 hr intercept.

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Patent Owner(s)

Patent OwnerAddress
LUBRIZOL ADVANCED MAT INCUS

International Classification(s)

Inventor(s)

Inventor Name Address
NEWBY ROBERT S HUDSON OHIO 44236
MANGO ROCCO A AVON LAKE OHIO 44012
OLAH ANDREW M SPENCER OH
BACKMAN ARTHUR L 29400 LAKELAND BOULEVARD WICKLIFFE OHIO 44092-2298 44092-2298

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