Patent ID: 9714181
Date: 2017-07-25
CPC Classifications: C02F,C09K,C23F

Claim:
1. 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.