Disclosed are methods and compositions for regulating the melanin content of mammalian melanocytes; regulating pigmentation in mammalian skin, hair, wool or fur; treating or preventing various skin and proliferative disorders; by administration of various compounds, including alcohols, diols and/or triols and their analogues.
AQUEOUS POLYURETHANE RESIN DISPERSION AND PROCESS FOR PREPARING THE SAME
申请人:Nakamura Taku
公开号:US20110136976A1
公开(公告)日:2011-06-09
This is to provide an aqueous polyurethane resin dispersion which can form a tough coating film.
An aqueous polyurethane resin dispersion is obtained by dispersing an aqueous polyurethane resin, which is obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a1) a polycarbonate polyol having no urethane bonding having an average molecular weight of 400 to 5000, and having 2.05 to 5 hydroxyl groups in average in one molecule, (b) a polyol compound having an acidic group and (c) a polyisocyanate, or obtained by reacting (a2) the polycarbonate polyol having no urethane bonding having an average molecular weight of 600 to 5000, and having 2.05 to 5 hydroxyl groups in average in one molecule, and having an acidic group, and (c) a polyisocyanate, and (B) a chain elongating agent having a reactivity with the isocyanate group of (A) the polyurethane prepolymer, being dispersed in an aqueous medium.
Polymerizable liquid composition adapted to produce polymers having outstanding optical and mechanical properties, polymers and articles obtained with said composition
申请人:ENICHEM SYNTHESIS S.p.A.
公开号:EP0114080A1
公开(公告)日:1984-07-25
A polymerizable liquid composition is disclosed, intended for preparing polymerizates having outstanding optical and physical properties, said composition consisting of a bis (allylcarbonate) of a dihydric alcohol oligomer, a bis (allylcarbonate) monomer of a dihydric or a trihydric alcohol, or an allyl ester, or a triallyl cyanurate or isocyanurate, and an acrylic or vinylic monomer, said composition being polymerized in bulk with the aid of at least one radicalic initiator. Highly transparent articles are obtained, which are very useful for fine optical applications.
POLYURETHANE RESIN AQUEOUS DISPERSION AND MANUFACTURING METHOD THEREOF
申请人:Ube Industries, Ltd.
公开号:EP2395037A1
公开(公告)日:2011-12-14
Disclosed are a polyurethane resin aqueous dispersion of, as dispersed in an aqueous medium, a polyurethane resin obtained through reaction of a polycarbonate polyol (a) at least having a recurring unit represented by the following formula (1) and a polyisocyanate compound (d), and a method for producing the polyurethane resin aqueous dispersion.
(wherein Z1 and Z2 each independently represent a divalent aliphatic hydrocarbon group having from 1 to 10 carbon atoms and optionally having a substituent).
Polymerisierbare Verbindungen umfassend ein polyalicyclisches Strukturelement
申请人:VOCO GmbH
公开号:EP2436668A1
公开(公告)日:2012-04-04
Die vorliegende Erfindung betrifft neue polymerisierbare Verbindungen umfassend ein polyalicyclisches Strukturelement und bestimmte funktionelle Gruppen, Mischungen umfassend eine oder mehrere dieser Verbindungen und entsprechende härtbare Gemische und Erzeugnisse sowie deren jeweilige Verwendung als Dentalmaterial bzw. zur Herstellung eines Dentalmaterials. Die Erfindung betrifft ferner ein Verfahren zur Herstellung dieser Verbindungen bzw. Mischungen und ein Verfahren zur Herstellung eines Erzeugnisses, vorzugsweise eines für den Dentalbereich geeigneten Erzeugnisses.