摘要:
A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes substantially equal amounts by weight of a) a rubbery polymer comprising a blend of an ethylene-propylenediene terpolymer, a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, and polyisobutylene b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 715 grams/cm at room temperature, at least 300 grams/cm at 70° C., and supports a static load of at least 300 grams at 70° C.
摘要:
A primer for promoting adhesion between an elastomeric adhesive and a nonporous substrate containing a silane-modified saturated polyester polymer and an adhesion promoter in an anhydrous solvent. The invention is also directed to a silane-modified saturated polyester polymer, and an adhesion promoter made by the reaction of a multifunctional isocyanate and an organosilane.
摘要:
The silylated polyurethane polymer includes a polyurethane prepolymer having between greater than about 50 to about 95% of NCO groups terminated with silane capping agents. The polymer has an improved mechanical properties. The polymer can also have between about 5% to less than about 50% of the NCO groups terminated with low molecular weight terminators.
摘要:
There is provided an adhesive system comprised of a pressure-sensitive adhesive matrix having dispersed. therein organic particulate solids having a particle size no greater than 300 microns, and generally no greater than 225 microns, which matrix may have at least one, and generally two, sides coated with an unfilled pressure-sensitive adhesive material, which adhesive materials generally may be acrylic materials. Such adhesive system is one generally provided as a sheet, including elongated tapes, having a thickness of from about 25 to 60 mils.
摘要:
A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes substantially equal amounts by weight of a) a rubbery polymer comprising a blend of an ethylene-propylenediene terpolymer, a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, and polyisobutylene b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 715 grams/cm at room temperature, at least 300 grams/cm at 70.degree. C., and supports a static load of at least 300 grams at 70.degree. C.
摘要:
The invention is a caulking gun nozzle attachment for consistently applying sealant at a roofing material overlap. The attachment includes a female end for matingly engaging a caulking gun nozzle; an applicator end in communication therewith; the applicator end having a coat-hanger shaped opening defined by a convex upper surface, and a lower surface which are joined at a first edge in a spaced-apart second edge; and a vertical solid guide intermediate the first and the second edge for tracking the overlap whereby a sealant is applied at the overlap uniformly an equal distance therefrom.
摘要:
A primer for promoting adhesion between an elastomeric adhesive and a nonporous substrate containing a silane-modified saturated polyester polymer and an adhesion promoter in an anhydrous solvent. The invention is also directed to a silane-modified saturated polyester polymer, and an adhesion promoter made by the reaction of a multifunctional isocyanate and an organosilane.
摘要:
Preprinted duplicating masters for producing printed copies, with or without spirit duplicating fluids, comprising a foundation sheet reverse printed in a predetermined pattern with an imaging material which produces copies upon the application of pressure alone, although the spirit duplicating process can be used. The imaging material is applied as a synthetic polymeric resin disperion having an ink composition therein and is subsequently heated to gel but not fuse the resin so that the ink composition will be retained therein but will be releasable and transferable in a predetermined pattern to a substrate by at least the application of pressure alone. A protective cover sheet is placed over the printing to prevent inadvertent and accidental transfer of the ink composition.
摘要:
The cure-through rate of one-part silylated polymer adhesive/sealant compositions is improved by the addition of a small but effective amount of an alcohol-free hydrophilic solvent. The composition is particularly suitable for packaging in aluminum or aluminum-lined cartridges.
摘要:
The cure-through rate of one-part silylated polymer adhesive/sealant compositions is improved by the addition of a small but effective amount of an alcohol-free hydrophilic solvent. The composition is particularly suitable for packaging in aluminum or aluminum-lined cartridges.