A novel method is disclosed for the preparation of an aqueous polyacrylate modified polyurethane dispersion. The preparation method includes three main steps: (a) preparation of polyacrylates polymer or copolymer without using cationic surfactants; (b) preparation of polyurethane prepolymer with car.....
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In the present invention we designed and synthesized a series of water-soluble linear and cyclic pi-conjugated organic compounds (hereinafter polyenes) with different chromophores including tetraphenylethylene, siloles, fulvene, butadienes, and 4H-pyrans. The emission color of these polyenes ranges .....
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A new switched-opamp technique is proposed to operate switched-capacitor circuits at supply voltages as low as 1-V without on-chip voltage multiplier or low-Vt devices. The main idea of the new switched-opamp technique is to implement an additional switchable operational amplifier (opamp) in parall.....
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At present time techniques in preparing advanced ceramic materials with high electrical conductivity and magnetic susceptibility are rare. This new invention relates to hyperbranched organometallic polymers, which are useful as precursors to certain ceramic materials, processes for the preparation o.....
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Media streaming is getting more and more important as an essential service with the increasing popularity of broadband Internet access. Video-on-demand (VoD) is one of such services where movies are delivered to desktops of distributed users with low delay and free interactivity. However, VoD is not.....
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