US 12,071,514 B2
Phosphorus containing oligomers and polymers
Sabyasachi Gaan, Gossau (CH); Rudolf Hufenus, St. Gallen (CH); Rashid Nazir, St. Gallen (CH); Pietro Simonetti, Teufen (CH); Khalifah Salmeia, St. Gallen (CH); Dambarudhar Parida, St. Gallen (CH); and Ali Gooneie, St. Gallen (CH)
Assigned to EMPA Eidgenoessische Materialpruefungs- und Forschungsanstalt, Duebendorf (CH)
Appl. No. 17/055,586
Filed by EMPA Eidgenoessische Materialpruefungs- und Forschungsanstalt, Duebendorf (CH)
PCT Filed May 20, 2019, PCT No. PCT/EP2019/063001
§ 371(c)(1), (2) Date Nov. 15, 2020,
PCT Pub. No. WO2019/219977, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 18173380 (EP), filed on May 18, 2018.
Prior Publication US 2021/0371591 A1, Dec. 2, 2021
Int. Cl. C08G 73/06 (2006.01); C07F 9/6558 (2006.01); C07F 9/6561 (2006.01)
CPC C08G 73/0633 (2013.01) [C07F 9/65583 (2013.01); C07F 9/6561 (2013.01); C08G 73/0644 (2013.01); C08G 73/065 (2013.01); C08G 2210/00 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A phosphorus containing linear oligomer or polymer comprising general formula (A)

OG Complex Work Unit Chemistry
wherein
n is at least 2;
R1 is selected from the group consisting of phenyl, substituted phenyl, benzyl, substituted benzyl, a linear or branched alkyl group with up to 5 carbon atoms, and a linear or branched alkoxy group with up to 5 carbon atoms;
—X—R′—X— is selected from the group consisting of

OG Complex Work Unit Chemistry
wherein R″ is a linear or branched alkyl group with up to 5 carbon atoms in ortho, meta or para position,
or —X—R′—X— is —NR2—R″—NR2— wherein
R2 is a methyl or alkyl group and
R′″ is selected from the group consisting of:
a linear or branched alkyl group with up to 5 carbon atoms,

OG Complex Work Unit Chemistry