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    13.
    发明专利
    未知

    公开(公告)号：BR7705453A

    公开(公告)日：1978-05-02

    申请号：BR7705453

    申请日：1977-08-17

    Applicant: BAYER AG

    Inventor： SCHMITZ W ,  MERTEN R ,  DIETRICH W ,  WIEDERMANN R

    IPC: C08G18/00 ,  C08G18/02 ,  C08G18/10 ,  C08G18/42 ,  C08G18/79

    Abstract: The present invention is directed to a method for the production of plastics, including foams, containing urethane groups and predominantly isocyanurate groups by reacting polyesters having a molecular weight of from 350 to 10,000, and containing at least two hydroxyl groups and containing phthalic acid residues and, optionally, other polyhydroxyl compounds having a molecular weight of from 400 to 10,000 and/or chain extenders having a molecular weight of from 32 to 400 with an excess of polyisocyanates in the presence of isocyanate-trimerization catalysts and optionally blowing agents, foam stabilizers and other additives, the improvement characterized in that polyesters are used whose acid components comprise at least 50%, by weight, phthalic acid residues and wherein 10 to 49%, preferably 20 to 40%, by weight, of the isocyanate groups react to form urethane groups and 51 to 90%, preferably 60 to 80%, by weight, of the isocyanate groups react to form isocyanurate groups.

    14.
    发明专利
    未知

    公开(公告)号：BR7703748A

    公开(公告)日：1978-04-18

    申请号：BR7703748

    申请日：1977-06-08

    Applicant: BAYER AG

    Inventor： MUELLER H ,  LEWALTER J ,  MERTEN R ,  DUNWALD W

    IPC: C08G18/00 ,  C08G18/30 ,  C08G18/32 ,  C08G18/80 ,  C09D175/00 ,  C07C125/06

    Abstract: This invention relates to a new process for the preparation of oligourethanes having isocyanate end groups blocked with alkanol and/or cycloalkanol groups, the compounds which can be obtained by this process and their use for the production of polyurethane resins by the isocyanate polyaddition process.

    16.
    发明专利
    未知

    公开(公告)号：SE338670B

    公开(公告)日：1971-09-13

    申请号：SE264468

    申请日：1968-02-29

    Applicant: BAYER AG

    Inventor： MERTEN R

    IPC: C07D233/78 ,  C08G18/38 ,  C08G73/06 ,  C08G17/00 ,  C08G33/02

    Abstract: 1,173,397. α-Aminosuccinic acid derivatives. FARBENFABRIKEN BAYER A.G. 29 Feb., 1968 [1 March, 1967], No. 9785/68. Heading C2C. [Also in Divisions C3 and H1] Amino succinic acid derivatives are prepared by reacting a diester of an ethylene-1,2-dicarboxylic acid with a primary polyamine containing 2 to 4 amino groups. In specific examples, such derivatives are prepared from (1) dimethyl maleate and 4,4 1 -diaminodiphenylmethane, (2) hexamethylene diamine and dimethyl maleate, (4 and 7) hexahydro-pphenylene diamine and dimethyl maleate, (8) aniline, m-phenylene diamine and dimethyl maleate. The amino succinic acid derivatives may be reacted with polyisocyanates to form a polyurea which may be subsequently or simultaneously subjected to a ring closure reaction to form polymeric polycarboxylic acid esters containing hydantoin rings.

    17.
    发明专利
    未知

    公开(公告)号：SE7709279L

    公开(公告)日：1978-02-19

    申请号：SE7709279

    申请日：1977-08-17

    Applicant: BAYER AG

    Inventor： WIEDERMANN R ,  MERTEN R ,  DIETRICH W ,  SCHMITZ W

    IPC: C08G18/00 ,  C08G18/02 ,  C08G18/10 ,  C08G18/42 ,  C08G18/79

    Abstract: The present invention is directed to a method for the production of plastics, including foams, containing urethane groups and predominantly isocyanurate groups by reacting polyesters having a molecular weight of from 350 to 10,000, and containing at least two hydroxyl groups and containing phthalic acid residues and, optionally, other polyhydroxyl compounds having a molecular weight of from 400 to 10,000 and/or chain extenders having a molecular weight of from 32 to 400 with an excess of polyisocyanates in the presence of isocyanate-trimerization catalysts and optionally blowing agents, foam stabilizers and other additives, the improvement characterized in that polyesters are used whose acid components comprise at least 50%, by weight, phthalic acid residues and wherein 10 to 49%, preferably 20 to 40%, by weight, of the isocyanate groups react to form urethane groups and 51 to 90%, preferably 60 to 80%, by weight, of the isocyanate groups react to form isocyanurate groups.

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