US 10,376,461 B2
Branched polyether-polyamide block copolymers and methods of making and using the same
Geng Lin, Rochester Hills, MI (US); and Nancy W. Harman, Savannah, GA (US)
Assigned to CRODA INTERNATIONAL PLC, East Yorkshire (GB)
Appl. No. 14/233,232
Filed by Geng Lin, Rochester Hills, MI (US); and Nancy W. Harman, Savannah, GA (US)
PCT Filed May 18, 2012, PCT No. PCT/US2012/038606
§ 371(c)(1), (2), (4) Date Jan. 16, 2014,
PCT Pub. No. WO2013/012476, PCT Pub. Date Jan. 24, 2013.
Claims priority of provisional application 61/510,223, filed on Jul. 21, 2011.
Prior Publication US 2014/0140939 A1, May 22, 2014
Prior Publication US 2015/0098912 A9, Apr. 9, 2015
Int. Cl. C08L 77/00 (2006.01); A61K 8/90 (2006.01); C08G 65/333 (2006.01); C08G 69/40 (2006.01); C08L 63/00 (2006.01); A61Q 17/04 (2006.01); A61Q 19/00 (2006.01); A61K 8/88 (2006.01); C08G 69/48 (2006.01); A61Q 1/02 (2006.01); A61Q 5/00 (2006.01); A61Q 11/00 (2006.01); A61Q 15/00 (2006.01)
CPC A61K 8/90 (2013.01) [A61K 8/88 (2013.01); A61Q 17/04 (2013.01); A61Q 19/00 (2013.01); C08G 65/33303 (2013.01); C08G 69/40 (2013.01); C08G 69/48 (2013.01); C08L 63/00 (2013.01); A61Q 1/02 (2013.01); A61Q 5/00 (2013.01); A61Q 11/00 (2013.01); A61Q 15/00 (2013.01); C08G 2650/50 (2013.01)] 15 Claims
 
1. A polyether polyamide block copolymer having the following formula:

OG Complex Work Unit Drawing
wherein R1 is a C1-C8 hydrocarbon radical, R2 is a C2-C4 hydrocarbon diradical, R3 is a C2-C52 hydrocarbon diradical, R4 is selected from C2-C12 hydrocarbon diradicals optionally substituted with alkylene oxide groups, wherein at least a portion of the R4 groups is substituted with Y—C(═O)—R3—C(═O)—Z—(R2—O)w—R1, wherein Y is O or NH, Z is O or NH, w is an integer from 2 to 100; x is an integer from 2 to 100; y is an integer from 1 to 10, and z is an integer from 2 to 100, and wherein at least a portion of the Y groups is NH, wherein the softening point of the polyether polyamide block copolymer is from 60° C. to 150° C. and a viscosity of less than 5,000 centipoise at 160° C.,wherein the polyether polyamide block copolymer is prepared from reactants comprising a C2-C12 aliphatic diamine and a trifunctional component, wherein the trifunctional component is selected from triols, triamines, and mixtures thereof, and the diamine is present in amounts of 50% or less based on the total amount of difunctional and trifunctional amines and alcohols present on an equivalents basis.