Low viscosity polythiol and method therefor
US5225472A · kind A · utility
139Cited by
11References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1992 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | May 19, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/372
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method and composition for decreasing the viscosity of mercaptan terminated polymers. The method involves adding thiol terminated trithio-orthoformate polycondensates to the mercaptan terminated polymer to achieve desired decreases in viscosities without adversely affecting other physical properties. The polycondensates have the formula EQU (HS--R--S--).sub.2 CH--S--R'--S[--CH(--S--R"--S).sub.2 --].sub.n (H).sub.x wherein R, R', and R" are alkylene, arylene, alkylene thioether, or alkylene ether, either the same or different; n is 0-10; and x is n+1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.