Joint fill composition and method

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

Reexamination Certificate

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C521S131000, C521S159000, C521S164000, C521S167000, C521S170000, C521S174000, C528S048000, C528S052000, C528S058000, C528S059000, C528S076000, C528S078000, C528S085000

Reexamination Certificate

active

10801164

ABSTRACT:
A composition and method for protecting pipeline joints is disclosed. A mold covers the exposed pipeline joint. A reaction composition including a polyol, an isocyanate, and an ester, preferably 2,2,4-trimethyl-1,2-pentanediol diisobutyrate, is added to the mold and allowed to react to form a polymer.

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