公开(公告)号：US12291631B2

公开(公告)日：2025-05-06

申请号：US17688096

申请日：2022-03-07

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yi-Ting Wei ,  Jyh-Horng Wu ,  Yao-Zu Wu ,  Ming-Tsong Leu ,  You-Shan Cai

IPC: C08C19/30 ,  C08J11/28 ,  C08L51/04

Abstract: A reclaiming agent is formed by grafting thiol groups onto styrene-butadiene rubber (SBR). The reclaiming agent has a weight average molecular weight of 1000 to 120000, which can be a random copolymer or a block copolymer. 100 parts by weight of styrene-butadiene rubber can be reacted with 0.1 to 50 parts by weight of the reclaiming agent to form a reclaimed rubber.

公开(公告)号：US11713362B2

公开(公告)日：2023-08-01

申请号：US17135344

申请日：2020-12-28

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Yi-Ting Wei ,  Jyh-Horng Wu ,  Yao-Zu Wu ,  Ming-Tsong Leu

IPC: C08C19/30 ,  C08C19/08 ,  C08F236/14

CPC classification number: C08C19/08 ,  C08C19/30 ,  C08F236/14

Abstract: A depolymerizer is formed by grafting thiol groups on parts of the double bonds of a polymer of linear conjugated diene monomer. The linear conjugated diene monomer can be 1,3-butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene, 2-methyl-1,3-pentadiene, 2,3-dimethyl-1,3-pentadiene, 2-phenyl-1,3-butadiene, or 4,5-diethyl-1,3-octadiene. The depolymerizer has a weight average molecular weight of 1000 to 400000.