# US 10,767,118 B2 · Scavenger compositions for sulfur species

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- Number: US 10,767,118 B2
- Document ID: US10767118B2
- Status: Granted
- Kind: B2
- Application number: 16/067,888
- Filed: 2017-01-06
- Published: 2020-05-14
- Granted: 2020-09-08
- Earliest claimed: 2016-01-08
- Assignees: Innophos, Inc.
- Applicants: Innophos, Inc.
- Inventors: Jean Valery Martin; Giovanni Onnembo; Evelyn Olanipekun; Kevin Kempton; Arbnor Ibraimi; William Carton
- Web page: https://patentgrep.com/patent/US10767118B2

## CPC

- C08J 3/223: {Packed additives}
- C10G 29/20: Organic compounds not containing metal atoms
- C08K 3/22: of metals
- C08K 3/26: Carbonates; Bicarbonates
- C08K 5/0091: {Complexes with metal-heteroatom-bonds}
- C08K 5/053: Polyhydroxylic alcohols
- C08K 5/098: Metal salts of carboxylic acids
- C08L 95/00: Compositions of bituminous materials, e.g. asphalt, tar, pitch
- C08J 2395/00: Bituminous materials, e.g. asphalt, tar or pitch
- C08K 2003/2248: {of copper}
- C10G 2300/207: Acid gases, e.g. H2S, COS, SO2, HCN
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

A scavenger composition comprising a carrier and an active metal, wherein the carrier is present in an amount of about 1.0 wt % to about 99.0 wt. %, based on total weight of the composition, and the active metal is present in an amount of about 1.0 wt % to about 99.0 wt. %, based on total weight of the composition, wherein the active metal is a metal salt or metal chelate, and wherein the metal is chosen from iron, copper, molybdenum and zinc.

## Claims

### Claim 1

A scavenger composition for reducing hydrogen sulfide emissions from asphalt comprising:
a carrier in an amount of about 1.0 wt % to about 99.0 wt. %, based on total weight of the composition, and
an active metal in an amount of about 99.0 wt % to about 1.0 wt. %, based on total weight of the composition,
a dispersant in an amount of about 0.01 wt % to about 10.0 wt. %, based on total weight of the composition, and
a suspension aid in an amount of about 0.01 wt % to about 10.0 wt. %, based on total weight of the composition, wherein the suspension add is chosen from polysaccharides, fumed silica, modified bentonite, hectorites, castor oil derivatives, polyamides, polyolefins, and polyacrylates,
wherein the active metal is a metal salt or metal chelate, and wherein the metal is chosen from iron, copper, molybdenum, nickel and zinc.

### Claim 2 (depends on 1)

The scavenger composition according to claim 1 wherein the active metal is about 100 microns or less in diameter.

### Claim 3 (depends on 1)

The scavenger composition according to claim 1 wherein the active metal is chosen from copper aspartate; copper carbonate; copper citrate; copper gluconate; copper bis-glycinate; copper oxides; copper oxalate; copper sulfate; iron aspartate; iron bis-glycine; iron citrate; iron fumarate; iron gluconate; iron bis-glycinate; iron sulfate; molybdenum aspartate; molybdenum bis-glycine; molybdenum citrate; molybdenum fumarate; molybdenum gluconate; molybdenum glycinate; molybdenum sulfate; nickel aspartate; nickel bis-glycine; nickel citrate; nickel fumarate; nickel gluconate; nickel bis-glycinate; nickel sulfate; zinc acetate; zinc arginate; zinc ascorbate; zinc aspartate; zinc carboxylate; zinc gluconate; zinc bis-glycinate; zinc methionate; zinc oxide; zinc picolinate; and zinc sulfate.

### Claim 4 (depends on 1)

The scavenger composition according to claim 1 wherein the active metal is a copper-based active metal.

### Claim 5 (depends on 1)

Bitumen or asphalt comprising the scavenger composition according to claim 1.

### Claim 6 (depends on 5)

Bitumen or asphalt according to claim 5, wherein the bitumen or asphalt is further modified with polyphosphoric acid and the active metal is a copper-based active metal.

### Claim 7 (depends on 6)

Bitumen or asphalt according to claim 6, wherein hydrogen sulfide emissions from the bitumen or asphalt when heated to 100° C. or greater are about 10 ppm or less.

### Claim 8 (depends on 1)

A process for reducing hydrogen sulfide emissions from asphalt or bitumen comprising adding to the asphalt or bitumen the scavenger composition according to claim 1.

### Claim 9 (depends on 8)

The process according to claim 8, wherein the bitumen or asphalt is further modified with polyphosphoric acid and the active metal is a copper-based active metal.

### Claim 10

A process for preparing a scavenger composition comprising:
adding to a carrier an active metal in a ratio of from about 1.0:4.0 to about 4.0:1.0 carrier to active metal,
further comprising adding to the carrier a suspension aid in an amount of about 0.01 wt % to about 10.0 wt % and a dispersant in an amount of about 0.01 wt % to about 10.0 wt %, based on total weight of the composition, wherein the suspension add is chosen from polysaccharides, fumed silica, modified bentonite, hectorites, castor oil derivatives, polyamides, polyolefins, and polyacrylates,
wherein the suspension aid and dispersant are able to provide a stable suspension of the active metal in the carrier, and
wherein the scavenger composition is able to reduce hydrogen sulfide emissions.

### Claim 11 (depends on 10)

The process according to claim 10, wherein the active metal is chosen from copper aspartate; copper carbonate; copper citrate; copper gluconate; copper bis-glycinate; copper oxides; copper oxalate; copper sulfate; iron aspartate; iron bis-glycine; iron citrate; iron fumarate; iron gluconate; iron bis-glycinate; iron sulfate; molybdenum aspartate; molybdenum bis-glycine; molybdenum citrate; molybdenum fumarate; molybdenum gluconate; molybdenum glycinate; molybdenum sulfate; nickel aspartate; nickel bis-glycine; nickel citrate; nickel fumarate; nickel gluconate; nickel bis-glycinate; nickel sulfate; zinc acetate; zinc arginate; zinc ascorbate; zinc aspartate; zinc carboxylate; zinc gluconate; zinc bis-glycinate; zinc methionate; zinc oxide; zinc picolinate; and zinc sulfate.

### Claim 12 (depends on 10)

The process according to claim 10, wherein the active metal is a copper-based active metal.