发明名称 |
Process for coating the interior surface of water service lines |
摘要 |
Methods, processes, compositions and systems for preventing leaching effects from drinking water service pipes (such as lead, steel and copper) having an inner diameter of at least approximately 12 mm. 2-part thermoset resin coating is applied to the inner surfaces of the pipes where the curing agent can be a phenol free and plasticizer free adduct type. The coating can reduce heavy metals, such as lead, from leaching from installed pipes to less than approximately 10 μg/L (10 ppb). When cured, specific leachates, Bisphenol A and Epichlorohydrin from the coatings will be (less than) <1 μg/L (1 ppb) with overall TOC levels measured at (less than) <2.5 mg/L (2.5 ppm). Pipes can be returned to service from at least approximately 1 to approximately 2 hours. |
申请公布号 |
US9273815(B2) |
申请公布日期 |
2016.03.01 |
申请号 |
US201314011260 |
申请日期 |
2013.08.27 |
申请人 |
Pipe Restoration Technologies, LLC |
发明人 |
Gillanders Larry L.;Williams Steven A. |
分类号 |
F16L57/00;F16L58/02;B05D7/22;C09D5/08;C09D163/00;C23C26/00;F16L58/10 |
主分类号 |
F16L57/00 |
代理机构 |
Law Offices of Brian S. Steinberger, P.A. |
代理人 |
Steinberger Brian S.;Law Offices of Brian S. Steinberger, P.A. |
主权项 |
1. A method for providing a protective barrier coating to interior surfaces of lead based water service pipes, comprising the steps of:
providing water service pipes formed from lead having internal diameters from at least approximately 12 mm; coating the interior surfaces of the water service pipes with a leak sealant barrier coating in a single pass run coating operation; curing the leak sealant barrier coating in at least approximately 1 to approximately 4 hours to return the water service pipes to service, wherein lead levels leaching into the drinking water from the leak sealant barrier-coated water service pipes is less than 10 μg/L (10 ppb). |
地址 |
Las Vegas NV US |