Non-CFC-Blown Flexible Urethane Foams

The need for alternative blowing agents to replace CFCs was discussed in the section on blowing agents. It was noted that the production and use of CFCs having an ozone-depletion effect will be banned worldwide by 1995. 

Methylene chloride has been used in part as an alternative for CFC-11. The sole use of methylene chloride results in problems in processing and environment, i.e., toxicity. 

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