公开(公告)号：WO2021178233A1

公开(公告)日：2021-09-10

申请号：PCT/US2021/019840

申请日：2021-02-26

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： PAN, Xiao-Dong ,  GALUSKA, Alan, A. ,  LI, Feng ,  HERNANDEZ, Nieve, Jr.

IPC: C08L9/06 ,  C08L65/00 ,  C08L91/00 ,  B60C1/00 ,  C08K3/36 ,  C08K3/04 ,  C08K5/548

Abstract: A rubber compound suitable for passenger tires may comprise: 40 to 70 parts by weight per hundred parts by weight rubber (phr) of a long chain branched cyclopentene ring-opening rubber (LCB-CPR) having a glass transition temperature (Tg) of -120°C to -80°C, a g' vis of 0.50 to 0.91, and a ratio of cis to trans of 40:60 to 5:95, 30 phr to 60 phr of a styrene-butadiene rubber (SBR), wherein the SBR has a glass transition temperature (Tg) of -60°C to -5°C, 50 phr to 110 phr of a reinforcing filler, and 20 phr to 50 phr of a process oil.

公开(公告)号：WO2021113503A1

公开(公告)日：2021-06-10

申请号：PCT/US2020/063095

申请日：2020-12-03

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： ZABULA, Alexander, V. ,  LOPEZ-BARRON, Carlos, R. ,  GALUSKA, Alan, A. ,  PAN, Xiao-Dong ,  SHIRAMIZU, Mika, L. ,  YANG, Yong ,  DAVIS, Mark, K. ,  LUO, Lubin ,  MATTLER, Sarah, J. ,  KANG, Shuhui

IPC: C08G61/08 ,  C08G61/12

Abstract: A method of ring-opening metathesis polymerization (ROMP) may comprise: contacting a first cyclic olefin comonomer to the reaction mixture over time at a rate of 0.01 mol% per minute to 25 mol% per minute based on a total amount of the second cyclic olefin comonomer added to the reaction mixture to produce a polymer, wherein a final mol to mol ratio of first cyclic olefin comonomer to second cyclic olefin comonomer added to the reaction mixture is 1:1 to 500:1; and wherein the second cyclic olefin comonomer has a higher reactivity with the metathesis catalyst than the first cyclic olefin comonomer.

公开(公告)号：WO2021178235A1

公开(公告)日：2021-09-10

申请号：PCT/US2021/019854

申请日：2021-02-26

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： GALUSKA, Alan, A. ,  ZABULA, Alexander, V. ,  YANG, Yong ,  LOPEZ-BARRON, Carlos, R. ,  ROHDE, Brian, J. ,  PAN, Xiao-Dong ,  LIU, Wen, J.

IPC: B32B25/00 ,  B60C1/00 ,  C08F36/06 ,  C08G61/08 ,  C08K3/04 ,  C08K3/36 ,  C08K5/54 ,  C08L9/00 ,  C08L15/00 ,  C08L21/00 ,  C08L23/16 ,  C08L65/00 ,  F16L11/08

Abstract: A rubber compound for heavy-duty truck or bus tire treads may comprise: 5 to 100 parts by weight per hundred parts by weight rubber (phr) of a long chain branched cyclopentene ringopening rubber (LCB-CPR) having a glass transition temperature (Tg) of -120°C to -80°C, a g'vis of 0.50 to 0.91, and a ratio of cis-to-trans of 40:60 to 5:95; 0 phr to 95 phr of a rubber selected from a group consisting of a natural rubber (NR), a polybutadiene rubber (BR), and a combination thereof; 30 phr to 90 phr of a reinforcing filler; and 0.5 phr to 20 phr of a process oil.

公开(公告)号：WO2021101996A1

公开(公告)日：2021-05-27

申请号：PCT/US2020/061055

申请日：2020-11-18

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： SHIRAMIZU, Mika, L. ,  PAN, Xiao-Dong ,  ZABULA, Alexander, V. ,  LOPEZ-BARRON, Carlos, R. ,  GALUSKA, Alan, A. ,  YANG, Yong

IPC: C08L15/00 ,  C08L9/00 ,  C08L9/06 ,  C08L7/00 ,  C08K3/36

Abstract: Rubber compounds may comprise: an epoxidized polypentenamer rubber (CPR) and/or a hydrolyzed epoxidized CPR; and a filler comprising silica particles. One nonlimiting example is rubber compound comprising: phr to 90 phr of a styrene-butadiene rubber (SBR), a natural rubber (NR), and/or a butadiene rubber (BR); 10 phr to 50 phr of a epoxidized CPR and/or a hydrolyzed epoxidized CPR; and 10 phr to 200 phr of a filler comprising silica particles, wherein the SBR, the NR, the BR, the epoxidized CPR, and the hydrolyzed epoxidized CPR combined equal 100 parts. Rubber compounds comprising epoxidized CPR and/or a hydrolyzed epoxidized CPR; and a filler comprising silica particles may be useful in tire compositions.