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US 12,291,631 B2Granted
Reclaiming agent and reclaimed rubber
AssigneeIndustrial Technology Research Institute
InventorsYi-Ting Wei, Jyh-Horng Wu, Yao-Zu Wu, Ming-Tsong Leu, You-Shan Cai
Life of this patent
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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.
Claims9
A reclaiming agent, having a chemical structure of
- wherein k:
- (m+n)=0.3:1 to 8:1, and (a+a′+b+b′):
- (m+n)=0.01:1 to 0.5:1.
A reclaimed rubber,
- formed by reacting 100 parts by weight of a first styrene-butadiene rubber with 0.1 to 50 parts by weight of a reclaiming agent,
- wherein the reclaiming agent is formed by grafting thiol groups onto a second styrene-butadiene rubber.
Dependencies are inferred from the claim text.