Jianye Wen - Waltham MA Frederick M. Drauschke - Melrose MA Salvador Crespo - Merrimack NH
Assignee:
W. R. Grace Co.-Conn. - Columbia MD
International Classification:
B32B 2730
US Classification:
428355AC, 428489, 523099, 52410
Abstract:
An exemplary primer/membrane package system comprises (a) a membrane comprising a carrier sheet and a pressure-sensitive adhesive thereon; and (b) an aqueous dispersion primer composition operative to promote adhesion between a construction surface and the membrane. The primer composition comprises at least two of an acetate, maleate, and acrylate, and has a viscosity of 200-2000 cp and more preferably 400-800 cp (Brookfield/#5 spindle/50 rpm, 25Â C).