Silicone-based working fluid composition
US4537691A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1984 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Nov 2, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S528/901
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a silicone-based working fluid composition having improved heat resistance which comprises (A) 100 parts by weight of a base component composed of a first dimethylpolysiloxane terminated at both molecular chain ends each with a trimethylsiloxy group and a second dimethylpolysiloxane terminated at both molecular chain ends each with a silicon-bonded hydroxy group in such a proportion that the trimethylsiloxy/hydroxy molar ratio is from 95/5 to 10/90 and (B) from 0.01 to 5 parts by weight of an additive component which is a diorganopolysiloxane having imino-containing phenoxy groups, e.g. 4-anilinophenoxy group, 4-(4-anilino)anilinophenoxy group, 4-(.alpha.-naphthylamino)phenoxy group and 4-(.beta.-naphthylamino)phenoxy group, as the pendant groups on the polysiloxane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.