US 11,718,714 B2
Polyamides, and methods of producing thereof
Han Lee, Boston, MA (US); Sadesh H. Sookraj, Boston, MA (US); and Alexander Tseitlin, Boston, MA (US)
Assigned to Novomer, Inc., Rochester, NY (US)
Appl. No. 16/494,635
Filed by Novomer, Inc., Boston, MA (US)
PCT Filed Mar. 13, 2018, PCT No. PCT/US2018/022248
§ 371(c)(1), (2) Date Sep. 16, 2019,
PCT Pub. No. WO2018/170006, PCT Pub. Date Sep. 20, 2018.
Claims priority of provisional application 62/473,008, filed on Mar. 17, 2017.
Prior Publication US 2020/0087457 A1, Mar. 19, 2020
Int. Cl. C08G 69/22 (2006.01); C08G 69/16 (2006.01); C08G 69/04 (2006.01); C08G 69/08 (2006.01)
CPC C08G 69/22 (2013.01) [C08G 69/16 (2013.01)] 35 Claims
OG exemplary drawing
 
1. A method of producing a polymer, comprising:
contacting an alkylene oxide and carbon monoxide to form a compound of formula (1);
combining the compound of formula (1) with a nitrogen-containing compound of formula (2) under aqueous conditions to produce a compound of formula (3-a), wherein:
the compound formula (1) is

OG Complex Work Unit Chemistry
wherein each R1a, R1b, R1c and R1d is independently H or alkyl,
the nitrogen-containing compound of formula (2) is R2—NH2, wherein R2 is H or alkyl, and
combining the compound of formula (3-a) with a weak base to produce the polymer, wherein:
the compound of formula (3-a) is

OG Complex Work Unit Chemistry
wherein each R1a, R1b, R1c, R1d and R2 is independently H or alkyl, and
the polymer comprises repeating units of formula

OG Complex Work Unit Chemistry
or a salt thereof wherein each R1a, R1b, R1c, R1d and R2 are as defined above for formula (3-a).