TERTIARY AMINE CATALYST MIXTURES USEFUL IN CELLULAR POLYURETHANE FORMATION

    公开(公告)号:CA1166621A

    公开(公告)日:1984-05-01

    申请号:CA386194

    申请日:1981-09-18

    Abstract: Tertiary amine catalyst mixtures comprising at least one hydroxyalkyl piperazine, preferably 2-hydroxyethyl piperazine or 1,4-di-(2-hydroxyethyl) piperazine, and at least one other tertiary amine for increasing the processability of hydroxyalkyl piperazine in controlling the water-isocyanate reaction rate to obtain optimum performance in cellular polyurethane foam formulations and/or enhancing the compatibility of hydroxyalkyl piperazine with other foaming ingredients in flexible polyester polyurethane foam formulation; and a process for producing cellular polyurethanes, such as flexible polyester or polyether polyurethane foam and high resilience polyether polyurethane foam, by effecting the reaction of an organic polyol reactant and an organic polyisocyanate reactant in the presence of a blowing agent and said tertiary amine catalyst mixture, the resulting cellular polyurethanes exhibiting very low residual amin? odor.

    USE OF ORGANOSILOXANE COMPOSITIONS AS FOAM STABILIZERS IN FLEXIBLE POLYESTER POLYURETHANE FOAM

    公开(公告)号:CA1169200A

    公开(公告)日:1984-06-12

    申请号:CA385672

    申请日:1981-09-11

    Abstract: 12,469 USE OF ORGANOSILOXANE COMPOSITIONS AS FOAM STABILIZERS IN FLEXIBLE POLYESTER POLYURETHANE FOAM A process for manufacturing low density flexible polyester polyurethane foam utilizing as a foam stabilizer selected low molecular weight (e.g., 400 to 1500) organosiloxane compositions containing monomeric units A, B and C wherein A is a monofunctional trimethylsiloxy unit ¢(CH3)3SiO1/2!, B is a difunctional dimethylsiloxy unit ¢(CH3)2SiO2/2! and C is a difunctional organomethylsiloxy unit ¢R(CH3)SiO2/2! where R is a cyano-, ether-, hydroxyor phenyl-organo modifying moiety, and in which the unit ratio of B to C in each organosiloxane composition is from 1 to 4 inclusive; solutions of such organosiloxane compositions; and the foams derived from such process. S P E C I F I C A T I O N 1.

    9.
    发明专利
    未知

    公开(公告)号:BR8104106A

    公开(公告)日:1982-03-16

    申请号:BR8104106

    申请日:1981-06-29

    Abstract: Siloxane copolymer mixtures comprising a minor amount of certain high molecular weight (e.g., 4000 to 30,000) siloxane-oxyalkylene copolymers and a major amount of certain low molecular weight (e.g., 300 to 1100) siloxane-oxyalkylene copolymers or cyanoalkylsiloxanes in specifically defined mixture ratios; a process for producing high resilience polyurethane foam utilizing as a foam stabilizer said siloxane copolymer mixtures; and the foams derived therefrom.

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