公开(公告)号：US20250154291A1

公开(公告)日：2025-05-15

申请号：US18921093

申请日：2024-10-21

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Sunny Jacob ,  Joseph D. Penney ,  Matthew C. Konderson ,  Jacob J. Hay ,  Darryl W. Averette ,  Joseph A. Maier ,  Yanping He ,  Eric J. Wamsley

IPC: C08C19/14 ,  C08C19/16

Abstract: In some embodiments a process includes introducing an aqueous solution to a first hydrocarbon solvent to form an emulsion, wherein the aqueous solution comprises an oxidizing agent containing solution and a surfactant containing solution. The process further includes introducing a cement to the emulsion to form a first mixture within a reactor, wherein the cement comprises a butyl rubber elastomer and a second hydrocarbon solvent that is the same as or different than the first hydrocarbon solvent. The process further includes introducing a halogen source to the first mixture contained within the reactor to form a second mixture comprising a halobutyl rubber elastomer. The process further includes introducing a neutralizing agent with the second mixture to form a third mixture. The process further includes isolating the halobutyl rubber elastomer from the third mixture.

公开(公告)号：US20250066645A1

公开(公告)日：2025-02-27

申请号：US18717510

申请日：2022-12-13

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Sunny Jacob ,  John A. CLARK ,  Tu N. PHAM

IPC: C09J125/16 ,  C09J125/18

Abstract: A process for preparing a cement composition comprising an isoolefin-alkylstyrene copolymer and substantially free of an alkylstyrene monomer is described herein. The process comprises reacting the isoolefin monomer with at least a portion of the alkylstyrene monomer in a diluent to form an isoolefin-alkylstyrene copolymer, replacing the diluent with a solvent, reacting a halogenic scavenger with the unreacted alkylstyrene monomer in an absence of a free radical initiator in order to form a halogenic alkylstyrene compound without altering the isoolefin-alkylstyrene copolymer, and removing the halogenic alkylstyrene compound from the slurry to form the cement composition substantially free of the alkylstyrene monomer. Also disclosed herein is a composition comprising an isoolefin-alkylstyrene copolymer and an alkylstyrene monomer comprising a concentration less than about 20 ppm.

公开(公告)号：US20250145750A1

公开(公告)日：2025-05-08

申请号：US18932780

申请日：2024-10-31

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Eric P. Jourdain ,  Meha H. Shah ,  Elumalai Jayaraman ,  Bernard D'Cruz ,  Serge Riffard ,  Scott H. Loyd ,  Sunny Jacob ,  Rugved P. Pathare

IPC: C08F236/04 ,  C08F236/20 ,  C08K5/01

Abstract: A method for using a saturated paraffinic process oil may include: curing an ethylene-propylene-diene-monomer (EPDM) composition to form an EPDM article, wherein the EPDM composition comprises EPDM rubber and a saturated paraffinic process oil, wherein the saturated paraffinic process oil comprises: a kinematic viscosity at 100° C. in a range of 14 cSt to 45 cSt; a sulfur content of less than 0.03 wt. %; a saturates content of at least 90 wt. %; a T5 distillation point of at least 480° C.; an aniline point in a range of about 130° C. to about 150° C.; a refractive index at 20° C. in a range of 1.460-1.490; and a sum of terminal/pendant propyl groups and terminal/pendant ethyl groups of at least 1.7 per 100 carbon atoms of the composition