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US 11,713,362 B2Granted
Depolymerizer and recycled rubber
AssigneeIndustrial Technology Research Institute
InventorsYi-Ting Wei, Jyh-Horng Wu, Yao-Zu Wu, Ming-Tsong Leu
Life of this patent
Estimating the term…
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.
Claims5
A depolymerizer, having a chemical structure of
- wherein (a+a′+b+b′):(m+n)=0.01:1 to 0.67:1, a>0, a′>0, b>0, and b′>0.
A recycled rubber, being formed by
- depolymerizing 100 parts by weight of rubber using 0.5 to 10 parts by weight of a depolymerizer,
- wherein the depolymerizer has a chemical structure of
- wherein (a+a′+b+b′):(m+n)=0.01:1 to 0.67:1, a′>0 b>0, and b′>0.
Dependencies are inferred from the claim text.