SYMPOSIA PAPER Published: 01 January 1991
STP16349S

CFC Blowing Agents Substitutes — A Status Report

Source

Rapidly moving events at the national and global levels mean a virtual elimination of chlorofluorocarbons (CFC) as insulation foam blowing agents by the year 2000. There have been a number of more environmentally acceptable substitutes proposed for CFCs. As replacements for CFC-11, HCFC-123 and 141b have received most attention, while HCFC-22 and HFC-134a have been considered as CFC-12 substitutes.

This paper reports on the progress made to critically evaluate these substitute materials in rigid polyurethane and polyisocyanurate insulating foams. The processing, industrial hygiene, and final foam performance of the substitutes are emphasized. The path to commercialization of HCFC-141b is presented in some detail.

Author Information

Zwolinski, LM
Knopeck, GM
Shankland, IR
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: C16
Pages: 229–236
DOI: 10.1520/STP16349S
ISBN-EB: 978-0-8031-5174-1
ISBN-13: 978-0-8031-1420-3