Patent classifications
C08G18/3831
BIO-INSPIRED AND ANTIMICROBIAL POLYMERS CONTAINING AMINO ACID-LIKE MONOMER BUILDING BLOCKS
Methods for killing a microbial are provided that include introducing a functionalized amide polymer to a microbe, where the functionalized amide polymer includes a polymer backbone selected from polyesters and polyurethanes; an amide group with a pendant functional group, where the nitrogen atom of the amide group is part of the polymer backbone; and a net positive charge.
Thermosettable coating compositions using pendant carbamate-functional polyurethane polymers and methods of forming the thermosettable coating compositions
A thermosettable coating composition comprises a reaction product of a polyurethane polymer having at least one pendant carbamate functional group and a crosslinker reactive with the at least one pendant carbamate functional group. The polyurethane polymer is a polymerization reaction product of at least one diol having a primary carbamate functional group and at least one polyisocyanate. A method of forming a thermosettable coating composition includes polymerizing a mixture to form the polyurethane polymer, and combining the polyurethane polymer and a crosslinker reactive with the at least one pendant carbamate functional group to form the thermosettable coating composition. A coated article formed from the thermosettable coating composition is also disclosed.
Process for the production of polyurethane polyureas containing side chains and of aqueous dispersions of these
The present invention relates to a process for the production of aqueous polyurethane-polyurea dispersions comprising the steps of: A) reacting primary and/or secondary monoamines or diamines A1) with cyclic carbonate containing one hydroxy group A2) such that the molar ratio of total primary and/or secondary amine groups to cyclic carbonate groups is in the range of 0.8 to 1.2; B) producing an NCO-containing polyurethane prepolymer by reacting B1) polyisocyanates with B2) polymeric polyols and/or polyamines having number average molecular weights of more than 400 to 8,000 g/mol, optionally B3) low molecular weight compounds having number average molecular weights of 17-400 g/mol selected from the group consisting of mono- and polyalcohols, mono- and polyamines, and aminoalcohols; optionally B4) isocyanate-reactive, ionically hydrophilizing compounds, and B5) the reaction products of A); C) dispersing the prepolymer from B) in water; and D) optionally reacting the remaining free NCO groups of the prepolymer from B) with monoamines, polyamines, hydrazine and/or hydrazides, wherein the molar ratio of the NH groups to the NCO groups is from 0 to 1.2, and step D) occurs partially or completely prior to or during the dispersion step C).