Process for preparing an emulsion of elemental sulphur particles
US-9598322-B2 · Mar 21, 2017 · US
Urea fertilizer having improved hardness
US2016326066A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016326066-A1 |
| Application number | US-201515110265-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 7, 2015 |
| Priority date | Jan 9, 2014 |
| Publication date | Nov 10, 2016 |
| Grant date | — |
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- Title
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Abstract
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The present invention discloses a urea fertiliser having a lignin compound and elemental sulphur dispersed through-out the fertiliser and having improved hardness.
First claim
Opening claim text (preview).
1 . A method comprising: incorporating a lignin compound and elemental sulphur into a urea fertilizer such that the lignin compound and the elemental sulphur are dispersed throughout the urea fertilizer. 2 . The method according to claim 1 , wherein the lignin compound is a lignosulphonate. 3 . The method according to claim 2 , wherein the lignin compound is calcium lignosulphonate. 4 . The method according to claim 3 , wherein the lignin compound is present in the urea fertilizer in the amount of at least 0.25 wt %, based upon the weight of the urea fertilizer. 5 . The method according to claim 4 , wherein the lignin compound is present in the urea fertilizer in the amount of at least 0.75 wt %, based upon the weight of the urea fertilizer. 6 . The method according to claim 5 , wherein the urea fertilizer comprises from 50 to 99 wt % urea and from 1 to 25 wt % elemental sulphur, based upon the weight of the urea fertilizer. 7 . The method according to claim 6 , wherein the urea fertilizer comprises one or more additional fertilizer components chosen from the group consisting of potassium, phosphorus, nitrogen, boron, selenium, sodium, zinc, manganese, iron, copper, molybdenum, cobalt, calcium, magnesium and combinations thereof. 8 . A urea-sulphur fertilizer composition comprising from 50 to 99 wt % urea, from 1 to 25 wt % elemental sulphur and from 0.1 to 5 wt % of a lignin compound, wherein the weight percentages are based upon the weight of the fertilizer composition, and wherein the lignin compound and the elemental sulphur are dispersed throughout the fertilizer. 9 . A fertilizer composition according to claim 8 , comprising one or more additional fertilizer components chosen from the group consisting of potassium, phosphorus, nitrogen, boron, selenium, sodium, zinc, manganese, iron, copper, molybdenum, cobalt, calcium, magnesium and combinations thereof.
Assignees
Inventors
Classifications
Mixtures of one or more fertilisers with additives not having a specially fertilising activity · CPC title
- C05C9/005Primary
Post-treatment · CPC title
Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal · CPC title
Other organic fertilisers · CPC title
containing trace elements · CPC title
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Frequently asked questions
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- What does patent US2016326066A1 cover?
- The present invention discloses a urea fertiliser having a lignin compound and elemental sulphur dispersed through-out the fertiliser and having improved hardness.
- Who is the assignee on this patent?
- Shell Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C05C9/005. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Nov 10 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).