Nephelometric determination of HB.sub.s antigen with antibody-containing microparticles
US4690906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1985 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Jan 30, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S436/82
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to polyfunctional hydrophilic spherical microparticles of uniform size which contain from 5 to 95% of units originating from the copolymerization of an aldehyde of the formula ##STR1## R.sub.1 being an alkyl radical, from 5 to 90% of units originating from the copolymerization of an acrylic acid ester of the formula ##STR2## in which R.sub.2 is H or alkyl and R.sub.3 is a hydroxyalkyl group, less than 15% of units originating from an acrylic acid derivative chosen from amongst ##STR3## R.sub.4, R.sub.5 and R.sub.6 being alkyl radicals, and from 0.1 to 10% of units originating from a crosslinking product. The invention also relates to a process for the preparation of the said microparticles and to the use of these microparticles for the nephelometric determination of HB.sub.s antigen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.