Transparent caulks containing fumed silica
AssigneeAir Products and Chemicals, Inc.
InventorJoel E. Goldstein
Life of this patent
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Abstract
In a sealant composition comprising a polymer latex, filler, plasticizer, silane adhesion promoter, and fumed silica, the improvement which comprises as the plasticizer a C.sub.1 -C.sub.8 alkyl aryl phthalate, an N-(C.sub.1 -C.sub.8)alkyl arylsulfonamide, or mixtures thereof.
Claims20
In a sealant composition comprising a polymer latex and fumed silica, the improvement which comprises 2 to 10 wt % of a plasticizer which is a C.sub.1 -C.sub.8 alkyl aryl diester of phthalic acid, an N-(C.sub.1 -C.sub.8)alkyl arylsulfonamide or a mixture thereof.
In a sealant composition comprising a polymer latex, plasticizer, silane adhesion promoter, and fumed silica, the improvement which comprises as the plasticizer a C.sub.1 -C.sub.8 alkyl arylphthalate, an N-(C.sub.1 -C.sub.8)alkyl arylsulfonamide, or mixtures thereof.
A caulking composition consisting essentially of the following ingredients on wt % basis:
- Polymer latex (solids basis):
- 80-93
- Plasticizer:
- 2-10
- Silane adhesion promoter:
- 0.3-1.5
- Fumed silica:
- 0.2-5
- Surfactant:
- 0.2-1
- Thickener:
- 0-5
- wherein the plasticizer is a C.sub.1 -C.sub.8 alkyl arylphthalate, an N-(C.sub.1 -C.sub.8) alkyl arylsulfonamide, or mixtures thereof.
Dependencies are inferred from the claim text.