§ Sir Trevor SkeetTo ask the Secretary of State for the Environment what information he has as to how many companies are using pentane technology to replace the use of chlorofluorocarbons for the production of expanded polystyrene; and what information he has about the alternative materials available.
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§ Mr. AtkinsI have been asked to reply.
Pentane is already used as the blowing agent in the production of bead expanded polystyrene. All United Kingdom manufacturers of extruded expanded polystyrene have indicated that they propose to phase out the use of those clorofluorocarbons (CFCs) which are controlled under the provisions of the Montreal protocol. I am unable to provide a comprehensive answer regarding alternative materials. However, prices of the controlled CFCs are expected to rise as the protocol takes effect and this will encourage the development and adoption of substitutes.