Lubricative coating composition, article and assembly containing same and method thereof
US5266359A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1991 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Dec 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1355
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricating composition includes an emulsion of a noncuring polysiloxane, a surfactant and water. Preferred polysiloxanes include a polar group, most preferably an aminoalkyl or carboxylalkyl terminating group. Preferred surfactants are copolymers of polysiloxane and polyoxyethylene. A metal article such as a needle, blade, cannula or quidewire includes a coating of the polysiloxane and the surfactant which renders the article surface lubricious. The article may be in a sliding relationship with a plastic article in an assembly such as a catheter-quidewire or a catheter-cannula assembly. The plastic portion of the assembly may also include a lubricant. The invention includes a method of making the lubricated article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.