Pyrrolidones for cleanup of sulfur-containing polymers

Details Pyrrolidones for cleanup of sulfur-containing polymers Pyrrolidones for cleanup of sulfur-containing polymers

1994-08-31

1996-10-01

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From sulfur-containing reactant

528374, 528381, 528387, 427340, 427341, 427343, 427352, 427353, 252364, 422901, C08G 7500, B05D 304

Patent

active

055612156

ABSTRACT:
A method for removing cured sulfur-containing polymer sealants from surfaces is disclosed. The method comprises applying to the surface a sealant remover comprising at least about 50 wt. % of a pyrrolidone, especially N-methyl-2-pyrrolidone, and allowing the cured sulfur-containing polymer and the remover to remain in contact until the cured sulfur-containing polymer is loosened and can be easily removed from the surface. The method of the invention enables fast, effective removal of the sulfur-containing polymer sealants commonly used in the aerospace, construction, and insulating-glass industries.

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