Reaction products of amines and polymers containing saturated heterocyclic moieties may be used as levelers in metal electroplating baths. The reaction products may plate metal with good surface properties and good physical reliability.

Hydrophilic molecules such as biologics, which can include peptides, proteins, and other biologically-derived materials, can be used as therapeutic agents in medical applications. They can face administration challenges because of poor membrane permeability and rapid clearance from the blood stream. Methods for the formation of a core-shell-brush nanoparticle from an A-B-C triblock copolymer are set forth. A hydrophilic core can contain the biologic and the C Block of the copolymer. The shell can be comprised of the precipitated B Block, and the A Block can form a stabilizing brush layer. The particles can be assembled by sequential precipitations under defined mixing conditions. Presented herein are methods to tune release based on process parameters during particle assembly and triblock characteristics.

Provided are a resin composition containing at least one resin selected from the group consisting of a polyimide and a precursor thereof and having a ring structure with 5 or more membered rings in a side chain, a polymerization initiator, and a polymerizable compound; a cured substance; a laminate; a manufacturing method for a cured substance; a manufacturing method for a laminate; a manufacturing method for a semiconductor device; and a semiconductor device.

There is provided a novel polymer including a repeating unit expressed as a following formula 1:

##STR00001##

where each of R.sub.1 and R.sub.2 independently represents an alkylene group with 2 to 6 carbon atoms, and each of n and m independently represents 10 to 10,000.

Provided is a method for producing a polysuccinimide that can simply produce a high molecular weight polysuccinimide. The method for producing a polysuccinimide is a method for producing a polysuccinimide in which a second polysuccinimide is produced using a polysuccinimide composition containing a first polysuccinimide. The method includes: performing a chain elongation reaction of the first polysuccinimide to obtain the second polysuccinimide. The first polysuccinimide has a weight average molecular weight (Mw) falling within a range of 25,000 to 50,000. The polysuccinimide composition contains dicarboxylic acid at a ratio of 1.5 mol % to 4 mol %.

Aliphatic polyimides are synthesized by a 1:1 molar ratio reaction of an unsaturated monoanhydride or an unsaturated diacid with a diamine. Bio-derived monomers are particularly useful in the synthesis of the aliphatic polyimides.

It is an object of the present invention to provide a cross-linked poly(aspartic acid) product that can retain the gel shape, water absorbency, water retentivity, and other performance because it does not undergo hydrolysis over time owing to the absence of an ester bond, and a method for producing the cross-linked poly(aspartic acid) product. The cross-linked poly(aspartic acid) product according to an embodiment of the present invention is a reaction product of a polysuccinimide (PSI), a compound (A: a1-A1-a2) containing a first functional group (a1) and a second functional group (a2), and a polyfunctional epoxy compound (B). The cross-linked poly(aspartic acid) product contains a cross-linked structure (PABAP) represented by PSI-a1-A1-a2-B-a2-A1-a1-PSI, the cross-linked structure (PABAP) is partially hydrolyzed, and the second functional group of the compound (A) does not react with the polysuccinimide (PSI) or is less reactive with the polysuccinimide (PSI) than the first functional group.

The present disclosure provides an insulating layer for a multilayer printed circuit board, a multilayer printed circuit board including the same, and a method for fabricating the same. The insulating layer of the present disclosure includes a polymer resin layer containing a melamine derivative, and thus may have excellent adhesion to a patterned metal layer.