Preparation of polyurethane systems
AssigneeEvonik Operations GmbH
InventorsEva Emmrich-Smolczyk, Mladen Vidakovic, Stephan Wendel, Juan Jesus Burdeniuc
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Abstract
The invention relates to a process for producing polyurethanes using a component A comprising a polyhydrazide, a polysemicarbazide, a polysulfonyl hydrazide and/or carbodihydrazide, in particular a polyhydrazide, wherein the component A is employed in the form of a mixture C which further comprises a component B comprising a dispersion medium.
Claims14
A process for producing polyurethane systems by reacting at least one polyol component with at least one isocyanate component in the presence of one or more catalysts which catalyze isocyanate-polyol and/or isocyanate-water and/or isocyanate trimerization reactions,
- wherein the reaction is performed in the presence of a component A comprising a polyhydrazide, a polysemicarbazide, a polysulfonyl hydrazide and/or carbodihydrazide,
- wherein the component A is employed in the form of a mixture C which further comprises a component B comprising a dispersion medium from the group of alkyl phthalates, alkyl dicarboxylates, alkyl adipates, alkyl sebacates, alkyl dodecanoates, polyesters, phosphate esters, fatty acid esters, straight-chain and modified natural oils or mineral oils, sulfonated oils, ethoxylated oils, epoxidized oils, fatty acids, sulfonamides, glycols, polyglycols, alkyl 1,2,4-benzenetricarboxylates and/or lecithin.
Dependencies are inferred from the claim text.