Polyhydroxypolyethers as low foam surfactants
US5425894A · kind A · utility
9Cited by
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13Claims
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Assignee
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Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/067
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Polyhydroxypolyethers as low foam surfactants comprising a compound of the general formula ##STR1## wherein R.sup.1 is a linear or branched C.sub.2 - to C.sub.18 -alkylene radical; R.sup.2 is H, ##STR2## R.sup.3, R.sup.4 are linear or branched C.sub.2 to C.sub.18 alkyl radicals; Z is a number of from 1 to 3; with the proviso that at least one R.sup.2 is ##STR3## n is a number of from 2 to 8; m is a number of from 15 to 34; and l is a number of from 0 to 3. These compounds are useful in cleaning compositions and rinse aids which are low foaming and biodegradable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.