摘要:
The invention relates to novel photopolymers based on specific urethane acrylates as writing monomers, which are suitable for producing holographic media, in particular for visual display of images.
摘要:
The present invention relates to novel self-developing films for incorporation of volume holograms by exposure, a method for production thereof and the use thereof.
摘要:
A continuous process for making an acid functional blocked Isocyanate. The process includes continuously feeding and mixing a) one or more polyisocyanates; b) one or more hydroxycarboxylic acids; and c) one or more other isocyanate blocking agent; in a reactor at from 100-240° C. The method provides acid functional blocked Isocyanates useful as crosslinkers for powder coatings.
摘要:
The present invention relates to powder coating binders containing polyurethanes having (meth)acryloyl groups which are applied onto a substrate, fused with heat and cured by electromagnetic radiation and exhibit improved scratch and mar resistance, and to a process for preparing the same.
摘要:
A method of making novel pendant acrylate- and/or methacrylate-containing polyether monols or polyols is provided. The method comprises i) providing a monomer mixture comprising at least one alkylene oxide, at least one oxirane compound containing an acrylate or methacrylate group, and at least one starter compound having at least one active hydrogen with equivalent weight of 31 to 8,000 g/equivalent of active hydrogen and ii) polymerizing the mixture in the presence of a double metal cyanide complex catalyst. The pendant acrylate- and/or methacrylate-containing polyether monols and polyols made by the above methods have between 1 and 20 pendant olefinic groups and a hydroxyl equivalent weight of 200-9,000 g/eq.
摘要:
A solid isocyanate-based composition having a glass transition temperature of at least 30° C. is produced by at least partially blocking the isocyanate groups of a polyisocyanate with a compound corresponding to the specified Formula I. This blocked isocyanate composition is useful in the production of powder coatings which are capable of being cured at temperatures of from 80 to 220° C.