4,4'-bis(methacryloylthio)diphenylsulfide
US5183917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1990 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Jun 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C327/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
4,4'-Bis(methacryloylthio)diphenylsulfide having the formula (I): ##STR1## and a curable composition characterized by comprising: (A) 4,4'-bis(methacryloylthio)diphenylsulfide having the above formula (I): PA0 (B) (i) another vinyl monomer copolymerizable with 4,4'-bis(methacryloylthio)diphenylsulfide having the above formula (I), and (ii) a polythiol represented by the formula (II): EQU R-(SH).sub.n (II) PA0 wherein R is a polyvalent organic group and n represents an integer of 2 or more, wherein the content of the component (B)(i), when the component (B)(i) is present, in the total amount of said components (A), (B)(i) and (B)(ii) is 10 to 90% by weight, and the functional group equivalent ratio of the mercapto groups of the component (B)(ii), when the component (B)(ii) is present, to the methacryloyl groups of the component (A) is from 0.02 to 1.01, and PA0 a curable composition characterized by comprising: PA0 a prepolymer having a polythioether skeleton obtained by the addition reaction of PA1 (A) 4,4'-bis(methacryloylthio)diphenylsulfide having the above formula (I): PA1 (B) (ii) a polythiol having the formula (II): EQU R-(SH).sub.n (II) PA1 wherein R is a polyvalent organic …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.