US 12,473,322 B2
Polymeric amphoteric surfactant compound
Normawati Samsodin, Kuala Lumpur (MY); Sara Shahruddin, Kuala Lumpur (MY); Nur Liyana Ismail, Kuala Lumpur (MY); Navin Sharma Karam Chand, Kuala Lumpur (MY); and Jun Xing Leong, Kuala Lumpur (MY)
Assigned to PETROLIAM NASIONAL BERHAD (PETRONAS), Kuala Lumpur (MY)
Appl. No. 17/915,843
Filed by Petroliam Nasional Berhad (PETRONAS), Kuala Lumpur (MY)
PCT Filed Mar. 31, 2021, PCT No. PCT/MY2021/050021
§ 371(c)(1), (2) Date Sep. 29, 2022,
PCT Pub. No. WO2021/201669, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020001676 (MY), filed on Apr. 1, 2020.
Prior Publication US 2023/0151044 A1, May 18, 2023
Int. Cl. C07H 15/04 (2006.01); C07H 1/00 (2006.01); C07H 15/12 (2006.01); C07H 15/14 (2006.01)
CPC C07H 15/14 (2013.01) [C07H 1/00 (2013.01); C07H 15/04 (2013.01); C07H 15/12 (2013.01)] 20 Claims
 
1. A polymeric amphoteric surfactant compound having chemical formula I:

OG Complex Work Unit Chemistry
wherein:
R1 represents a C8 to C22 alkyl group, a —((CH2)2O)o—R5 group, a —((CH(CH3)CH2)pO)—R6 group, a —((CH2)2O)q—((CH(CH3)CH2)rO)—R7 group, or a —((CH(CH3)CH2)q′O)—((CH2)2O)r′—R8 group;
o and p each independently represent a number from 2 to 8;
q, q′, r and r′ each independently represent a number from 1 to 5;
L1 to L3 each independently represent a C1 to C3 alkyl group;
R2 and R3 each independently represent a C1 to C3 alkyl group;
R4 represents OH or a C1 to C3 alkyl group;
R5 to R8 each independently represent a C8 to C22 alkyl group;
n represents a number from 1 to 5 and m represents a number from 0 to 4, where the sum of n+m is from 1 to 5, provided that n is at least 1.