Patent ID: 9522975
Filing Date: 2016-12-20
CPC Classification: C08G,C08L,C09J

Claim Text:
1. A polythiol composition comprising sulfur-containing compounds, the sulfur-containing compounds comprising: (i) from 50 wt. % to 95 wt. % 5-(2-mercaptoethyl)norbornane-2-thiol and/or 5-(2-mercaptoethyl)norbornane-3-thiol; (ii) one or more sulfide molecules having only two thiol sulfur groups (—SH), only one intermolecular sulfide group (—S—), and only two groups independently selected from a 5-(ethyl-2-yl)norborn-2-yl group and a 5-(ethyl-2-yl)norborn-3-yl group; and (iii) less than 1 wt. % mono-sulfur compounds; wherein the polythiol composition contains less than 1 wt. % 5-vinylnorborn-2-ene.