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    POLYMER COMPOSITIONS AND METHODS
    4.
    发明公开
    POLYMER COMPOSITIONS AND METHODS 审中-公开

    公开(公告)号：EP3553133A1

    公开(公告)日：2019-10-16

    申请号：EP19175671.7

    申请日：2012-07-24

    Applicant: SAUDI ARAMCO TECHNOLOGIES COMPANY

    Inventor： ALLEN, Scott D. ,  WILLKOMM, Wayne R.

    IPC: C08L69/00

    Abstract: The present invention encompasses polyurethane compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane foams, thermoplastics and elastomers derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure:

    In another aspect, the invention provides articles comprising the inventive foam and elastomer compositions as well as methods of making such compositions.

    POLYMERIZATION SYSTEM FOR THE COPOLYMERIZATION OF CO2 AND EPOXIDES AND RELATED METHOD
    6.
    发明公开
    POLYMERIZATION SYSTEM FOR THE COPOLYMERIZATION OF CO2 AND EPOXIDES AND RELATED METHOD 审中-公开

    公开(公告)号：EP3486269A1

    公开(公告)日：2019-05-22

    申请号：EP18214217.4

    申请日：2013-05-24

    Applicant: SAUDI ARAMCO TECHNOLOGIES COMPANY

    Inventor： FARMER, Jay, J.

    IPC: C08G64/34 ,  C08G65/26 ,  B01J31/18 ,  B01J31/02 ,  B01J31/22

    Abstract: In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO 2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having one or more sites capable of initiating copolymerization of epoxides and CO 2 , wherein the chain transfer agent contains one or more masked hydroxyl groups. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of - OH end groups, a high percentage of carbonate linkages, and substantially all polycarbonate chains having hydroxyl end groups have no embedded chain transfer agent.

    POLYCARBONATE POLYOL COMPOSITIONS
    9.
    发明公开
    POLYCARBONATE POLYOL COMPOSITIONS 审中-公开

    公开(公告)号：EP3584265A1

    公开(公告)日：2019-12-25

    申请号：EP19182670.0

    申请日：2011-11-23

    Applicant: SAUDI ARAMCO TECHNOLOGIES COMPANY

    Inventor： ALLEN, Scott D. ,  MICHEL, Armin

    IPC: C08G18/00

    Abstract: The present invention provides polycarbonate polyol compositions with improved characteristics. Such polycarbonate polyol compositions are useful in thermosetting applications for the production of coatings for consumer products. The present invention provides compositions having such improved characteristics, in particular, polycarbonate polyol compositions having a glass transition temperature (Tg) from about -20°C to about 60°C, from about -20°C to about 50°C, or from about 0°C to about 30°C, are particularl useful in thermosetting applications. In some embodiments, polycarbonate polyol compositions have a Tg from about -20°C to about 3°C. In some embodiments, polycarbonate polyol compositions have a Tg from about 0°C to about 50°C, from about 0°C to about 50°C, or from about 10°C to about 40°C.

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