3,3'-Tetraglycidylsulfonyldianiline thermosetting compositions and polybutadiene rubber modified thermosetting compositions prepared from the same
US4269759A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Aug 1, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2918
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to (1) an epoxy compound identified as 3,3'-tetraglycidylsulfonyldianiline (referred to herein as 3,3'-TGDDS); (2) a thermosetting composition comprising 3,3'-TGDDS and a curing agent; (3) a thermosetting composition having improved resistance to moisture and to a reduction in the glass transition temperature at elevated temperatures when cured comprising (a) the above epoxy compound, i.e., 3,3'-TGDDS, (b) a polybutadiene rubber or mixture thereof, (c) an epoxy curing agent such as 4,4'-diaminodiphenylsulfone, (d) a free radical initiator and esterification catalyst for the polybutadiene rubber; and (4) a carbon fiber/rubber modified epoxy composite prepared from the thermosetting composition of (3). The 3,3'-TGDDS when melted and admixed with the polybutadiene rubber in a solventless system forms a homogeneous mixture which is stable for extended periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.