Antifoam formulations for the thermal desalination process of water
AssigneeSolenis Technologies, L.P.
InventorsStephan Nied, Helena Kondardi, Lisa Marie Winzen
Life of this patent
Estimating the term…
Abstract
Formulation F comprising A) 50 to 90 parts by weight of at least one block copolymer P of ethyleneoxide and propylene oxide, B) 0.5 to 10 parts by weight of at least one salt of an alkyl sulfate S, C) 0.05 to 0.5 parts by weight of a composition C comprising C1) 5 to 10 parts by weight of at least one polydimethylsiloxane bearing only terminal alkyl groups, C2) 1 to 3 parts by weight of at least one polydimethylsiloxane bearing at least alkoxylated hydroxy group, C3) at least one solvent, wherein said formulation F is an aqueous formulation.
Claims9
A formulation comprising:
- A) 50 to 90 parts by weight, based on the total weight of the formulation, of at least one block copolymer of ethyleneoxide and propylene oxide,
- B) 0.5 to 10 parts by weight, based on the total weight of the formulation, of at least one salt of an alkyl sulfate,
- C) 0.05 to 0.5 parts by weight, based on the total weight of the formulation, of a composition comprising
- C1) 5 to 10 parts by weight, based on the total weight of the composition, of at least one polydimethylsiloxane bearing only terminal alkyl groups,
- C2) 1 to 3 parts by weight, based on the total weight of the composition, of at least one polydimethylsiloxane bearing at least one alkoxylated hydroxy group,
- C3) at least one solvent, wherein said formulation is an aqueous formulation.
A formulation comprising
- A) from about 50 to about 90% by weight, based on the total weight of the formulation, of at least one block copolymer of ethyleneoxide and propylene oxide,
- B) from about 0.5 to about 10% by weight, based on the total weight of the formulation, of at least one salt of an alkyl sulfate,
- C) from about 0.05 to about 0.5% by weight, based on the total weight of the formulation, of a composition comprising
- C1) from about 5 to about 10% by weight, based on the total weight of the composition, of at least one polydimethylsiloxane bearing only terminal alkyl groups,
- C2) from about 1 to about 3% by weight, based on the total weight of the composition, of at least one polydimethylsiloxane bearing at least one alkoxylated hydroxy group,
- C3) at least one solvent,
- D) from about 10 to about 49.45% by weight, based on the total weight of the formulation, of water.
A desalination method comprising adding a formulation to feed water of a thermal desalination process, wherein the formulation comprises:
- A) from about 50 to about 90 parts by weight, based on the total weight of the formulation, of at least one nonionic surfactant different from siloxanes,
- B) Optionally from about 0.1 to about 10 parts by weight, based on the total weight of the formulation, of at least one salt of alkyl sulfate,
- C) from about 0.05 to about 0.5 parts by weight of a composition comprising
- C1) from about 5 to about 10% by weight, based on the total weight of the composition, of at least one polydimethylsiloxane bearing only terminal alkyl groups,
- C2) from about 1 to about 3% by weight, based on the total weight of the composition, of at least one polydimethylsiloxane bearing at least one alkoxylated hydroxy group,
- C3) at least one solvent, and
- D) water.
Dependencies are inferred from the claim text.