BIODEGRADABLE STEALTH POLYMERIC PARTICLES FABRICATED USING THE MACROMONOMER APPROACH BY FREE RADICAL DISPERSION POLYMERIZATION
申请人:AKALA Emmanuel
公开号:US20120129797A1
公开(公告)日:2012-05-24
The present invention is directed to a crosslinked or non-crosslinked polymer particle, wherein the crosslinked polymer particle comprises a copolymer of poly(alklyene glycol-graft-lactate) that is crosslinked by at least one hydrolysable monmer. Another embodiment of the present invention is a polymer particle comprising a crosslinked polymer particle that is a product of starting materials comprising (a) a hydrophilic monomer, (b) a hydrophobic monomer, and (c) a hydrolysable crosslinking agent. Another embodiment of the present invention is a polymer particle comprising, a crosslinked copolymer comprises structures represented by Formulas (I), (II), and (III), where Formulas (I), (II) and (III) are defined in the specification. Yet other embodiments of the present invention include a method of preparing a methacrylate terminated macromonomer, a method of preparing a crosslinking agent, and a method of preparing a therapeutic agent loaded nanosphere by dispersion polymerization.
POLYMERIZABLE COMPOUND HAVING TRIPLE BOND, LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE
申请人:JNC CORPORATION
公开号:US20150376505A1
公开(公告)日:2015-12-31
To provide a liquid crystal compound having high polymerization reactivity, a high conversion ratio and high solubility in a liquid crystal composition, a polymerizable composition containing the compound, a liquid crystal composite prepared using the composition, and a liquid crystal display device including the composite.
The liquid crystal display device prepared using the polymerizable composition containing the compound represented by formula (1):
wherein, in formula (1), P
1
to P
6
are a polymerizable group; S
1
to S
6
are a single bond, alkylene or the like; a1, a3 and a4 are an integer from 0 to 4, a2 is an integer from 1 to 4; ring A
1
to ring A
4
are a divalent group derived from benzene, naphthalene, anthracene, pyrimidine, pyridine or the like; Z
1
to Z
3
are a single bond, alkylene or the like, and at least one of Z
1
, Z
2
and Z
3
is —C≡C—; and b1 is 0 or 1.
Provided is a reverse mode light scattering-type liquid crystal device which is good enough for practical use and has low drive voltage, and which exhibits high haze when a voltage is applied thereto, while exhibiting low haze when no voltage is applied thereto. A reverse mode liquid crystal device which has a light control layer and at least a pair of electrodes, and which is characterized in that the light control layer contains a polymerization product of a polymerizable material that contains (A) a liquid crystal composition, (B) a vertical alignment agent and (C) at least one polymerizable compound selected from among polymer-forming monomers and polymer-forming oligomers.
A dispersant for use with concrete or cement, and a concrete or cement admixture that comprises a cementitious material, water, and the dispersant. The dispersant includes a polymeric derivative of carboxylic acid, and has a sulfur-containing moiety that is covalently bonded thereto. Adding the dispersant to the cementitious material and water improves the rheological properties of the admixture.