Process for producing polystyrene foam
    31.
    发明授权
    Process for producing polystyrene foam 失效
    生产聚苯乙烯泡沫的方法

    公开(公告)号:US5218006A

    公开(公告)日:1993-06-08

    申请号:US891866

    申请日:1992-06-01

    IPC分类号: C08J9/00 C08J9/12

    摘要: The present invention relates to a process to produce polystyrene foam comprising mixing a predetermined amount of masterbatch mix and a styrenic polymer, heating this mixture, injecting CO.sub.2 and/or nitrogen, in gas or liquid form, as a blowing agent and subsequently extruding, cooling and drying the resulting polystyrene foam.

    摘要翻译: 本发明涉及生产聚苯乙烯泡沫的方法,包括将预定量的母料混合物和苯乙烯类聚合物混合,加热该混合物,以气体或液体形式注入二氧化碳和/或氮气作为发泡剂,随后挤出,冷却 并干燥得到的聚苯乙烯泡沫。

    NON-ISOCYANATE POLYURETHANE FOAM COMPOSITION AND METHOD OF MAKING THE SAME

    公开(公告)号:US20240199809A1

    公开(公告)日:2024-06-20

    申请号:US18595020

    申请日:2024-03-04

    申请人: Algix, LLC

    IPC分类号: C08G71/04 C08J9/08

    摘要: A thermoset non-isocyanate polyurethane foam (NIPU) composition includes a reaction product of a polycyclic carbonate, a polyamine; and a foaming ingredient including a carbonate-based chemical blowing agent. The reaction product is configured to form a urethane bond. The polycyclic carbonate and the polyamine can be bio-derived. A process for making the NIPU foam includes the steps of: (a) selecting a polycyclic carbonate and a polyamine; (b) mixing the polycyclic carbonate and the polyamine to form a reactant product including a partially cured gel matrix; (c) adding a foaming ingredient comprising a chemical blowing agent including a carbonate; (d) curing the mixture to form the NIPU foam. The reaction is tunable by changing cure temperature, water content, and/or acid composition.