The SBS [poly(styrene-b-butadiene-b-styrene)] used as the precursor of SBEBS is a star polymer
with four equivalent diblock arms of poly(styrene-6-butadiene) emanating from a silicon-based core with poly(styrene)-b free-ends; it is considered a triblock because the poly(styrene)-b blocks flank a central poly(butadiene)-b block.
developed multi-armed star polymer
complexes for administrating drugs with high doses.
Yang, will discuss how the technology is unique in part because it is a highly branched (more than 10 arms) star polymer
and offers the lowest PSC of the Kraton SIS product line.
2:00-2:30 pm -- New Generation of Star Polymer
Additives for VOC-free Universal Pigment Concentrates--Janos Hajas, Frank Kother, and John Du, BYK-Chemie GmbH, Wesel, Germany, and BYK-Chemie USA, Wallingford, CT
The analysis of reported solution viscosity versus molecular weight data in the literature also suggests that intrinsic viscosities decrease as the functionality of the star polymer
increases (at constant molar mass).
Regarding the use of star polymers
in UV-cured systems, our group has recently studied the cationic photopolymerization of a commercially available cycloaliphatic epoxy resin in the presence of a star polymer
made of a hyperbranched aromatic-aliphatic core and poly(ethylene glycol) arms (15).
In one example, the star polymer
is a lactone star copolymer.
21 and 22), or by "arm-first" star polymer
synthesis using sequential monomer addition of a bifunctional monomer to a preformed branch (refs.
During the R&D phases of SB-IIR, the weight fraction of star polymer
in the product was measured directly by GPC.
The degradation temperature for the star polymer
was determined to be around 335[degrees]C.
The new star polymers
are tailored to high-speed applications and differ in the number of branches, vinyl content and viscosity.
Abstract Novel dihydroxy functional 3-arm star polymers
were synthesized using a combination of atom transfer radical polymerization, ring opening polymerization, and click chemistry.