Primer for sealing earthenware pipe

Abstract

Abstract PURPOSE: A primer for sealing an earthenware pipe with a polyurethane resin, consisting of a specific silane coupling agent solution containing an amino group and a silane coupling agent containing a glycidoxy group in a solvent without water, and capable of giving the good water sealing property. CONSTITUTION: A primer solution is prepared by incorporating (A) a silane coupling agent containing an amino group, expressed by formula I (R 1 is 1W4C alkylene; R 2 and R 2 are 1W4C alkyl; X is H or aminoalkyl; m is l or 0) with (B) a silane coulping agent containing a grlycidoxy group expressed by formula II (R 4 is 1W4C alkylene; R 5 and R 6 are 1W4C alkyl; n is 1 or 0) in an amount of 0.5W15wt%, preferably 5W10wt%, without containing water substantially. The molar ratio between the componenets (A) and (B) is preferably 1:1W1:2.5. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Motoo Shimada
• 👤 Kazunori Oota
• 👤 Ryozo Umazume

Bibliographic Details