US 9,714,181 B2 · Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method

Abstract

A terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, containing tourmaline, polyaspartic acid, polyepoxysuccinic acid, polymaleic acid, etidronic acid, zinc salt, and the like, wherein the content of the tourmaline is 5-500 g/t (calculated based on solid form); the content of polyaspartic acid, polyepoxysuccinic acid, polymaleic acid and etidronic acid is 2-60 g/t (calculated based on liquid form); and the content of the zinc salt is 0.2-0.8 g/t (calculated based on solid form), is provided. Also disclosed is a method of preparing the terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning.

Claims6

Dependent claims

A terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning, comprising:

tourmaline, a copolymer and zinc salt, wherein the tourmaline may be dravite, schorlite, elbaite, manganese tourmaline, or uvite, the zinc salt is any one or a mixture of zinc sulfate and zinc chloride, wherein the copolymer is a polymer of any three or four of polyaspartic acid, polyepoxysuccinic acid, polymaleic acid and etidronic acid;
wherein a content of tourmaline is 5-500 grams per metric ton (g/t) calculated based on solid form;
a content of the copolymer is 2-60 grams per metric ton (g/t) calculated based on liquid form;
and a content of the zinc salt is 0.2-0.8 grams per metric ton (g/t) calculated based on solid form.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/109,261Filed 29 Dec 2014

Priority

CN 2014 1 00037673 Jan 2014

Published

US 2016/0326036 A110 Nov 2016

Granted

25 Jul 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C02F 5/105
Using organic substances: combined with inorganic substances
C02F 5/083
Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding…: mineral…
C02F 5/12
Using organic substances: containing nitrogen
C02F 5/125
Containing nitrogen: combined with inorganic substances

Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method

Life of this patent

Terpolymerized corrosion and scale inhibitor used in circulating cooling water of central air conditioning and its preparation method

Life of this patent

Abstract

Claims6