METHODS AND COMPOSITIONS FOR MAKING AN AMINO ACID TRIISOCYANATE
申请人:Warsaw Orthopedic, Inc.
公开号:US20150197488A1
公开(公告)日:2015-07-16
A method of making an amino acid triisocyanate is provided, the method comprising reacting an amino acid trihydrochloride with phosgene to form the amino acid triisocyanate. In some embodiments, the amino acid trihydrochloride comprises lysine ester trihydrochloride salt and the amino acid triisocyanate comprises lysine ester triisocyanate. In some embodiments, there is a lysine ester triisocyanate having a purity of at least about 98%, the lysine ester triisocyanate having a structure resulting from reacting lysine ester trihydrochloride salt with phosgene to form the lysine ester triisocyanate. These lysine ester triisocyanates can be used to make biodegradable polyurethanes.
Methods and compositions for making an amino acid triisocyanate
申请人:Warsaw Orthopedic, Inc.
公开号:US09266824B2
公开(公告)日:2016-02-23
A method of making an amino acid triisocyanate is provided, the method comprising reacting an amino acid trihydrochloride with phosgene to form the amino acid triisocyanate. In some embodiments, the amino acid trihydrochloride comprises lysine ester trihydrochloride salt and the amino acid triisocyanate comprises lysine ester triisocyanate. In some embodiments, there is a lysine ester triisocyanate having a purity of at least about 98%, the lysine ester triisocyanate having a structure resulting from reacting lysine ester trihydrochloride salt with phosgene to form the lysine ester triisocyanate. These lysine ester triisocyanates can be used to make biodegradable polyurethanes.
METHODS AND COMPOSITIONS FOR MAKING AN AMINO ACID TRIHYDROCHLORIDE
申请人:Warsaw Orthopedic, Inc.
公开号:US20150197483A1
公开(公告)日:2015-07-16
In some embodiments, a method of making an amino acid trihydrochloride is provided, the method comprising reacting an amino acid monohydrochloride with an alkanolamine to form the amino acid trihydrochloride. In some embodiments, the amino acid monohydrochloride comprises lysine hydrochloride, which is mixed with ethanolamine to form lysine ester trihydrochloride. In some embodiments, there is a lysine ester trihydrochloride salt having a purity of at least about 98%, the lysine ester trihydrochloride salt having a structure resulting from reacting lysine hydrochloride and ethanolamine to form the lysine ester trihydrochloride salt. The lysine ester trihydrochloride can be made in one reaction vessel.
The present invention encompasses the finding that improvements can be achieved in manufacture of isocyanates through the use of a substitute for or a precursor of phosgene. Methods and compositions utilized in accordance with the present invention can be useful in situations in which it is difficult to use phosgene, and in particular gaseous phosgene. In some embodiments, a substitute for or a precursor of phosgene used in accordance with the present invention for preparing isocyanates is or comprises diphosgene (ClCO
2
CCl
3
).
Oxidatively degradable poly(thioketal urethane)/ceramic composite bone cements with bone-like strength
作者:Madison A. P. McEnery、Sichang Lu、Mukesh K. Gupta、Katarzyna J. Zienkiewicz、Joseph C. Wenke、Kerem N. Kalpakci、Daniel A. Shimko、Craig L. Duvall、Scott A. Guelcher
DOI:10.1039/c6ra24642g
日期:——
Oxidatively degradable bone cements exhibit bone-like strength and remodel to form new bone in vivo.