Methods are generally provided for preparing a polymeric composition that includes a grafted block copolymer. Methods are also generally provided for preparing a polymeric composition that includes a star block copolymer prepared from a central core molecule that includes a plurality of attachment moieties. Methods are also generally provided for preparing a polymeric composition that includes a linear block copolymer. Block copolymers are also generally provided. Multi-segmented linear block copolymers are also generally provided.

The present invention relates to products that are derived from renewable biobased 1,3-propanediol (“1,3-PDO”). In this regard, aspects of the present invention involve the use of “green chemistry” in that products of the present invention are capable of being made from a renewable source of raw material.

Products derived from and methods of micelle tem plating that allow for orthogonal control over structural features.

Provided are a polybutylene terephthalate resin composition which is excellent in mold releasability and which can suppress deterioration in molding stability and aggregation of the polybutylene terephthalate resin composition due to blooming of a mold release agent; and a pellet thereof. The polybutylene terephthalate resin composition contains 0.01 to 5.0 parts by mass of (B) a saturated fatty acid ester of a polyglycerol represented by formula (I) described below with respect to 100 parts by mass of (A) a polybutylene terephthalate resin. In formula (I), R.sup.1s each may be the same or different and are C.sub.19-30 saturated aliphatic acyl groups, and n is an integer from 1 to 10. ##STR00001##

The unique polymeric OGF and enkephalin peptide conjugates with large size polymer attached at the C-terminus through hydrolysable linkage enhancing therapeutic properties of OGF and enkephalin peptides.

The unique polymeric OGF and enkephalin peptide conjugates with large size polymer attached at the C-terminus through hydrolysable linkage enhancing therapeutic properties of OGF and enkephalin peptides.

The invention relates to polyoxyalkylenes having pendant long-chain acyloxy radicals and to a process for preparation thereof by an alkoxylation reaction using double metal cyanide (DMC) catalysts.

The invention relates to polyoxyalkylenes having pendant long-chain acyloxy radicals and to a process for preparation thereof by an alkoxylation reaction using double metal cyanide (DMC) catalysts.

The present disclosure is based, at least in part, on the discovery that high-purity PEG lipids exhibit superior physical and biological properties, particularly when used in lipid nanoparticle (LNP) formulations. Therefore, the present disclosure provides PEG lipids at a recommended purity, e.g., for use in formulations, such as LNP formulations. The present disclosure also provides LNPs comprising the high-purity PEG lipids, and methods for delivering therapeutic agents to a subject using the same.

Embodiments of the present disclosure are directed processes to produce a low-color esterified oil soluble polyalkylene glycol, the process comprising forming a reaction mixture including a low viscosity oil soluble polyalkylene glycol and an excess amount of valeric acid, where the reaction mixture is formed in the presence of a catalytic amount of ortho-phosphoric acid catalyst to yield an organic phase including the low-color esterified oil soluble polyalkylene glycol.