| 摘要 |
A method for producing a cross-linked PVC rigid-foam body from a starting mixture containing PVC, an isocyanate or polyisocyanate, an organic anhydride and a chemical expanding agent by: converting the starting mixture into a molded article inside a compacting device under the action of pressure and heat; removing the article from the mold, and; expanding and hardening the obtained molded article in an expanding device while supplying heat and water and/or water vapor whereby forming a cross-linked PVC foam body. The starting mixture contains epoxidized compounds in amounts greater than 3% by weight, preferably greater than 5% by weight, and less than 15% by weight with regard to the starting mixture.
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