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USE OF AN ORGANOCARBONATE-MODIFIED PREPOLYMER AS REACTANT FOR PREPARATION OF ISOCYANATE-FREE AND ISOTHIOCYANATE-FREE ALKOXYSILANE POLYMERS
USE OF AN ORGANOCARBONATE-MODIFIED PREPOLYMER AS REACTANT FOR PREPARATION OF ISOCYANATE-FREE AND ISOTHIOCYANATE-FREE ALKOXYSILANE POLYMERS
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机译:使用有机碳酸酯改性的预聚物作为制备无异氰酸酯和无异硫氰酸酯的烷氧基硅烷聚合物的反应物
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摘要
The use of an organocarbonate-modified prepolymer having at least an average of 1.5 carbonate, thiocarbonate, carbamate or thiocarbamate groups bonded directly to the polymer backbone each via an oxygen atom, where each of these oxygen atoms has its origin in the reaction of a primary, secondary or tertiary hydroxyl group of the polymer backbone and a reactive compound selected from the group consisting of a diorganocarbonate, a diorganothiocarbonate, a cyclic carbonate, a cyclic thiocarbonate, an N,N-diheterocyclourea derivative and an N,N-diheterocyclothiourea derivative. Also, the preparation of the alkoxysilane polymers.
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