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US 4,732,951 AGranted
Polyether-based photopolymers
AssigneeSiemens Aktiengesellschaft
InventorsHellmut Ahne, Winfried Plundrich
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Abstract
A polyether-based photopolymer, which can be produced inexpensively and without costly purification operations comprises an addition product of an olefin-unsaturated monoisocyanate and a polyether having at least one hydroxyl group. The photopolymer is suitable for use in circuit and transmission line applications as a protective and insulating layer.
Claims16
A polyether-based photopolymer which comprises an addition product of an olefin-unsaturated monoisocyanate and a phenoxy resin having at least one hydroxyl group.
Dependencies are inferred from the claim text.