Freeze stable tetrakis(hydroxymethyl) phosphonium sulfate formulations
US10098341B2 · kind B2 · utility
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Key dates
| Filing date | Mar 15, 2016 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Mar 15, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N57/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition comprising:(a) tetrakis(hydroxymethyl)phosphonium sulfate (THPS); (b) water; and (c) methanol; wherein the weight percentages of (a), (b) and (c) are within the area on a ternary phase diagram for (a), (b) and (c) bounded by four points: (A) 5% THPS/58% water/37% methanol; (B) 5% THPS/36% water/59% methanol; (C) 65% THPS/27% water/8% methanol; and (D) 65% THPS/29% water/6% methanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.