초록 ▼

Permanently flexible and non-tacky coating mastic and caulking compositions contain one or more polymers having a Tg of about -50°C. to about -10°C. and pendant functional groups attached to the polymer backbone of the formula: [Figure] in which R1 is a divalent organic radical at least 3 atoms in l

Permanently flexible and non-tacky coating mastic and caulking compositions contain one or more polymers having a Tg of about -50°C. to about -10°C. and pendant functional groups attached to the polymer backbone of the formula: [Figure] in which R1 is a divalent organic radical at least 3 atoms in length, and X is organoacyl or cyano. The mastics and caulks typically have total non-volatile matter concentrations of about 60 to about 90 weight percent of which about 15 to about 75 weight percent comprises the described polymers and about 25 to about 85 weight percent is non-volatile solid matter other than the polymer such as pigments, fillers, etc. The liquid portion of the mastics and caulks may be a polymer solvent, aqueous polymer dispersant, or other material, and the cured compositions exhibit exceptionally good adhesion to architectural structural materials, especially to materials having relatively non-adherent surfaces such as foamed polyurethane roof insulation and smooth surfaced elastomers and plastics.

대표청구항 ▼

A coating mastic or caulking composition having a total non-volatile solids content of about 60 to about 90 weight percent, which solids content comprises at least about 15 weight percent of a water insoluble polymer and undissolved solids other than said polymer, said undissolved solids other than

A coating mastic or caulking composition having a total non-volatile solids content of about 60 to about 90 weight percent, which solids content comprises at least about 15 weight percent of a water insoluble polymer and undissolved solids other than said polymer, said undissolved solids other than said polymer constitute about 30 to about 60 weight percent of said composition and are selected from the group consisting of pigments, fillers, extenders and combinations thereof, and said fillers and extenders, other than pigment, constitute about 10 to about 70 weight percent of said total non-volatile solids, wherein said polymer has a Tg of about -50°C. to about -10°C., and comprises at least one functional monomer of the formula: [Figure] in which R1 is a divalent organic radical of at least 3 atoms in length, R5 and R6 are independently selected from hydrogen, hydroxy, halo, thio, amino or monovalent organic radicals, and X is －CO－R4 or －CN wherein R4 is hydrogen or a monovalent organic radical, and said polymer is selected from the group consisting of (a) conjugated diolefin polymers comprising at least about 30 weight percent of one or more conjugated diene monomers having 4 to about 8 carbon atoms and 0 to about 70 weight percent of one or more alkenyl substituted monoaromatic monomers; (b) olefin-ester interpolymers comprising at least about 1 weight percent of a monoolefin monomer having up to about 4 carbon atoms and at least about 40 weight percent of an alkenyl or alkenol ester of a saturated carboxylic acid; (c) olefinically unsaturated carboxylic acid ester polymers comprising at least about 40 weight percent polymerized olefinically unsaturated carboxylic acid ester monomers; (d) alkenyl ether polymers comprising at least about 30 weight percent alkenyl ether monomer units; and (e) combinations thereof.