16.
    发明专利
    未知

    公开(公告)号:ES2083504T5

    公开(公告)日:1999-07-01

    申请号:ES91119991

    申请日:1991-11-23

    Applicant: BASF AG

    Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.

    19.
    发明专利
    未知

    公开(公告)号:ES2084252T3

    公开(公告)日:1996-05-01

    申请号:ES92119929

    申请日:1992-11-24

    Applicant: BASF AG

    Abstract: Process for the preparation of tertiary amine oxides with a low nitrosamine content by reacting a tertiary amine with an aqueous hydrogen peroxide solution, in which process the starting material used are tertiary amines whose primary and secondary amine content is not more than 0.05% by weight in total.

    20.
    发明专利
    未知

    公开(公告)号:DE59107464D1

    公开(公告)日:1996-04-04

    申请号:DE59107464

    申请日:1991-11-23

    Applicant: BASF AG

    Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.

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