Flexible to rigid nanoporous polyurethane-acrylate (PUAC) type materials for structural and thermal insulation applications
AssigneeThe Curators of the University of Missouri
InventorsNicholas Leventis, Chariklia Sotiriou-Leventis, Abhishek Bang
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Abstract
Novel urethane-acrylate (UAC) Star monomers and polyurethane-acrylate (PUAC) aerogel polymers derived therefrom are described herein, along with other novel, related monomers and polymers. Also described herein are processes for preparing the UAC Star monomers, the PUAC aerogel polymers, and the other related monomers and polymers. The PUAC and related polymers herein are useful in various applications including in structural and thermal insulation.
Claims16
A norbornene-containing star monomer formed by the reaction of a norbornene-containing hydroxyl compound of the formula (IX)
- with a tris(isocyanatophenyl)methane of formula (III)
- wherein W is a C1-C6 straight chain or branched alkyl or alkoxyalkyl group;
- wherein R1, R2, and R3 are each independently hydrogen or C1-C6 straight chain or branched alkyl group;
- and,
- wherein m is an integer from 1 to 5.
A polynorbornene-polyurethane polymer formed by polymerization of a norbornene-containing star monomer obtained by the reaction of a norbornene-containing hydroxyl compound of the formula (IX)
- with a tris(isocyanatophenyl)methane of formula (III)
- wherein W is a C1-C6 straight chain or branched alkyl or alkoxyalkyl group;
- wherein R1, R2, and R3 are each independently hydrogen or C1-C6 straight chain or branched alkyl group;
- and,
- wherein m is an integer from 1 to 5.
A polynorbornene-polyurethane polymer formed by copolymerization of a norbornene-containing star monomer with a dinorbornene-containing chain extender, wherein the norbornene-containing star monomer is obtained by the reaction of a norbornene-containing hydroxyl compound of the formula (IX)
- with a tris(isocyanatophenyl)methane of formula (III)
- wherein W is a C1-C6 straight chain or branched alkyl or alkoxyalkyl group;
- wherein R1, R2, and R3 are each independently hydrogen or C1-C6 straight chain or branched alkyl group;
- and,
- wherein m is an integer from 1 to 5.
Dependencies are inferred from the claim text.