Sealing material
AssigneeRaychem Corporation
InventorsGeary E. Camin, William D. Uken
Life of this patent
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Abstract
This invention provides a sealing material which comprises a layer of elastomeric sealant having a cone penetration from about 100 to 350 (10.sup.-1 mm) and an ultimate elongation of at least 50% and disposed on a surface thereof an air drying or air curing material which sufficiently adheres to the surface of the elastomeric sealant to permit placement of the elastomeric sealant on a substrate and which reduces the surface tack of the elastomeric sealant.
Claims21
A sealing material comprising in combination:
- a. an elastomeric sealant comprising a polysiloxane, a polyurethane, a polybutyl or a triblock copolymer and having a cone penetration from about 100-350 (10.sup.-1 mm) and an ultimate elongation of at least 50%;
- and
- b. a backing material disposed on a surface of the elastomeric sealant comprising an air drying or air curing material which is liquid, dissolved in a solvent or dispersed in a carrier and which, when dried or cured, sufficiently adheres to the surface of the elastomeric sealant and provides means for installation of the elastomeric sealant on a substrate and which reduces the surface tack of the elastomeric sealant.
A method of forming a sealing material which comprises applying to a surface of an elastomeric sealant comprising a polysiloxane, a polyurethane, a polybutyl or a triblock copolymer and having a cone penetration of about 100-350 (10.sup.-1 mm) a backing material comprising an air drying or air curing material which is liquid, dissolved in a solvent or dispersed in a carrier and which, when dried or cured, sufficiently adheres to the surface of the elastomeric sealant and provides means for installation of the elastomeric sealant on a substrate and which reduces the surface tack of the elastomeric sealant.
A method of protecting a substrate by applying to a substrate a sealing material comprising:
- a. an elastomeric sealant comprising a polysiloxane, a polyurethane, a polybutyl or a triblock copolymer and having a cone penetration from about 100-350 (10.sup.-1 mm) and an ultimate elongation of at least 50%;
- and
- b. a backing material disposed on a surface of the elastomeric sealant comprising an air drying or air curing material which is liquid, dissolved in a solvent or dispersed in a carrier and which, when dried or cured, sufficiently adheres to the surface of the elastomeric sealant and provides means for installation of the elastomeric sealant on a substrate and which reduces the surface tack of the elastomeric sealant.
Dependencies are inferred from the claim text.