Biological-based polyurethanes and methods of making the same. The polyurethanes are formed by reacting a biodegradable polyisocyanate (such as lysine diisocyanate) with an optionally hydroxylated biomolecule to form polyurethane. The polymers formed may be combined with ceramic and/or bone particles to form a composite, which may be used as an osteoimplant.

A first aspect of the present invention is an adhesive composition comprising one or more polyisocyanates and one or more phosphate-functional polyols. A second aspect of the present invention is a method of bonding two substrates together to form a bonded article, said method comprising the steps of applying a layer of the composition of the first aspect to one of said substrates, contacting said layer of the composition of claim 1 to a second substrate, and curing or allowing to cure the composition of claim 1. A third aspect of the present invention is a bonded article formed by the method of the second aspect.

In an example, a process of forming a flame-retardant polyurethane material includes chemically reacting a polyisocyanate (that includes at least three isocyanate groups) with a phosphonate that includes at least one hydroxyl group to form a polyisocyanate-phosphonate compound. The process also includes forming a mixture that includes the polyisocyanate-phosphonate compound and a polyol. The process further includes polymerizing the mixture to form a flame-retardant polyurethane material.

The present invention relates to new stable modified polymer polyol dispersions. The modified polymer polyols of the present invention comprise at least one polyol and a stable dispersion of polymeric particles in the at least one polyol. There are also disclosed processes for the preparation of the herein described modified polymer polyols, and processes for preparing polyurethane materials containing them.

The present invention relates to new stable modified polymer polyol dispersions. The modified polymer polyols of the present invention comprise at least one polyol and a stable dispersion of polymeric particles in the at least one polyol. There are also disclosed processes for the preparation of the herein described modified polymer polyols, and processes for preparing polyurethane materials containing them.

Biological-based polyurethanes and methods of making the same. The polyurethanes are formed by reacting a biodegradable polyisocyanate (such as lysine diisocyanate) with an optionally hydroxylated biomolecule to form polyurethane. The polymers formed may be combined with ceramic and/or bone particles to form a composite, which may be used as an osteoimplant.

Disclosed herein is a thermally curable mixture, comprising at least one phosphonic diester (A), at least one diphosphonic diester (A), or at least one phosphonic diester and at least one diphosphonic diester (A); and at least one compound (B) which can be reacted by transesterification, transamidation, self-condensation of N-hydroxyalkylamino groups, self-condensation of N-alkoxyalkylamino groups, transacctalization of N-alkoxyalkylamino groups, acctalization of N-hydroxyalkylamino groups, or a combination thereof. Also disclosed is a process for making the thermally curable mixture, and a cured material comprising the product of thermally curing the mixture.

Biological-based polyurethanes and methods of making the same. The polyurethanes are formed by reacting a biodegradable polyisocyanate (such as lysine diisocyanate) with an optionally hydroxylated biomolecule to form polyurethane. The polymers formed may be combined with ceramic and/or bone particles to form a composite, which may be used as an osteoimplant.

Biological-based polyurethanes and methods of making the same. The polyurethanes are formed by reacting a biodegradable polyisocyanate (such as lysine diisocyanate) with an optionally hydroxylated biomolecule to form polyurethane. The polymers formed may be combined with ceramic and/or bone particles to form a composite, which may be used as an osteoimplant.

A two-component adhesive composition comprising the reaction product of: a polyol component, comprising at least one hydrophobic polyol: and an isocyanate component, comprising polyphosphoric acid and the reaction product of (I) an isocyanate compound and (II) a dimer acid polyester polyol.