	US 12,122,864 B2
	Polymer for the production of carbon fibers and carbon fibers made therefrom
Jeremy Moskowitz, Mauldin, SC (US); William Jacobs, Bethel, CT (US); Amy Tucker, Central, SC (US); and Billy Harmon, Simpsonville, SC (US)
Assigned to Cytec Industries Inc., Princeton, NJ (US)
Appl. No. 17/255,643
Filed by Cytec Industries Inc., Princeton, NJ (US)
PCT Filed Jul. 2, 2019, PCT No. PCT/US2019/040277 § 371(c)(1), (2) Date Dec. 23, 2020, PCT Pub. No. WO2020/010069, PCT Pub. Date Jan. 9, 2020.
Claims priority of provisional application 62/693,114, filed on Jul. 2, 2018.
Prior Publication US 2021/0284774 A1, Sep. 16, 2021
Int. Cl. C08F 220/00 (2006.01); C07C 277/08 (2006.01); C08F 220/18 (2006.01); C08F 220/44 (2006.01); C08F 220/46 (2006.01); C08F 220/48 (2006.01); D01D 1/02 (2006.01); D01D 1/04 (2006.01); D01D 1/06 (2006.01); D01D 10/06 (2006.01); D01F 6/38 (2006.01); D01F 9/21 (2006.01); D01F 9/22 (2006.01)

CPC C08F 220/44 (2013.01) [C07C 277/08 (2013.01); C08F 220/1805 (2020.02); C08F 220/46 (2013.01); D01D 1/02 (2013.01); D01D 1/04 (2013.01); D01D 10/06 (2013.01); D01F 6/38 (2013.01); D01F 9/22 (2013.01)]

17 Claims

1. A process for producing carbon fibers, the process comprising:

a) preparing a polymer solution or a molten polymer;

b) spinning the polymer solution or the molten polymer prepared in step (a); thereby forming carbon fiber precursor fibers;

c) drawing the carbon fiber precursor fibers through one or more draw and wash baths, resulting in drawn carbon fiber precursor fibers that are substantially free of solvent; and

d) oxidizing the drawn carbon fiber precursor fibers of step c) to form stabilized carbon fiber precursor fibers and then carbonizing the stabilized carbon fiber precursor fiber, thereby producing carbon fibers;

wherein the polymer solution or molten polymer comprises a polymer comprising repeating units derived from a first monomer and repeating units derived from a second monomer different from the first monomer, wherein the second monomer is a compound comprising an ethylenically unsaturated organic anion and an organic cation containing a C═N imine group produced by reacting an ethylenically unsaturated organic acid, or anhydride thereof, with an organic base containing a C═N imine group.