54.
    发明专利
    未知

    公开(公告)号:DE19530177A1

    公开(公告)日:1997-02-20

    申请号:DE19530177

    申请日:1995-08-17

    Applicant: BASF AG

    Abstract: Disclosed is a method of preparing amines of general formula (I), in which R , R , R , R , R and R are hydrogen, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkinyl, C3-C20 cycloalkyl, C4-C20 alkylcycloalkyl, C4-C20 cycloalkylalkyl, aryl, C7-C20 alkylaryl or C7-C20 aralkyl, R and R together form a saturated or unsaturated C3-C9 alkylene di-chain and R or R is C21-C200 alkyl or C21-C200 alkenyl or R and R together form a C2-C12 alkylene di-chain, by reacting olefins of general formula (II), in which R , R , R and R are as defined above, with ammonia or primary or secondary amines of general formula (III), in which R and R are as defined above, at temperatures of 200 to 350 DEG C and pressures of 100 to 300 bar in the presence of a zeolite catalyst, a boron beta -zeolite being used as the catalyst.

    55.
    发明专利
    未知

    公开(公告)号:AT144270T

    公开(公告)日:1996-11-15

    申请号:AT92106987

    申请日:1992-04-24

    Applicant: BASF AG

    Abstract: The invention relates to a process for the preparation of CFC-free, soft and elastic, semi-rigid or rigid mouldings containing urethane groups and having a cellular core and a compacted peripheral zone with an essentially pore-free, smooth surface, by reacting a) organic and/or modified organic polyisocyanates with b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms and optionally c) low-molecular-weight chain extenders and/or crosslinking agents, in the presence of d) blowing agents, e) catalysts, f) at least one amorphous, microporous silica gel which preferably has a mean pore diameter with more than 40 % in range from 0.1 to 10 nm, a pore volume of from 0.15 to 1.8 ml/g and a BET surface area of from 200 to 900 m /g, and optionally further additives, and g) assistants, in a closed mould with compaction. t

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