摘要:
This invention relates to hot melt adhesive compositions which includes a neutralized sulfonated elastomeric polymer having about 5 to about 50 meq. of neutralized sulfonate groups per 100 grams of the neutralized sulfonated elastomeric polymer, and about 25 to about 250 parts by weight of a hydrocarbon resin of a petroleum or coal tar distillate, aliphatic dienes and mono and diolefins, cyclic olefins of 5 or 6 carbon atoms and hydrogenated poly cyclics per 100 parts by weight of the neutralized sulfonated EPDM terpolymer.
摘要:
Adhesive contact cements of sulfonated olefinically unsaturated elastomers (sulfobutyl rubber) containing from about 0.1 to about 5.0 mol % SO.sub.3 H neutralized, partially neutralized, or unneutralized, are admixed with tackifiers, i.e. phenolformaldehyde resins, polyisobutylene, alkylphenol formaldehyde resins, petroleum resins, etc. in an amount of between about 5 and about 90 phr in between about 10 and about 50 wt. % solids concentration in organic solvents. These cements are used for adhering porous or non-porous materials such as textiles, wood, cloth, sheets or strip of metals, plastics, etc. to each other. High green strength, high tensile strength, high resistance to peel, even at elevated temperatures, water impermeability, etc. characterize such adhesive layers in laminates. A preferred solvent, 90% toluene, 10% isopropyl alcohol is used in compounding the cement and preferably an organic amine, e.g. ethylamine, is used to partially or completely neutralize the sulfonated elastomer although inorganic bases may also be used for neutralization.
摘要:
Adhesive contact cements of sulfonated olefinically unsaturated elastomers (sulfobutyl rubber) containing from about 0.1 to about 5.0 mol % SO3H neutralized, partially neutralized, or unneutralized are admixed with tackifiers, i.e. phenolformaldehyde resins, polyisobutylene, alkylphenol formaldehyde resins, petroleum resins, etc. in an amount of between about 5 and about 90 phr in between about 10 and about 50 wt. % solids concentration in organic solvents. These cements are used for adhering porous or non-porous materials such as textiles, wood, cloth, sheets or strip of metals, plastics, etc. to each other. High green strength, high tensile strength, high resistance to peel, even at elevated temperatures, water impermeability, etc. characterize such adhesive layers in laminates. A preferred solvent, 90% toluene, 10% isopropyl alcohol is used in compounding the cement and preferably an organic amine, e.g. ethylamine, is used to partially or completely neutralize the sulfonated elastomer although inorganic bases may also be used for neutralization.
摘要:
A butyl rubber ionomer having improved adhesion to substrates whose surfaces have polar functional groups. Examples of such substrate materials include stainless steel, glass, mylar or Teflon®. The adhesion of the butyl rubber ionomer to the substrate is at least 25% greater than the adhesion of a non-ionomeric butyl rubber to the same substrate surface and with certain substrates is more than 150% greater. The adhesion is improved with increasing levels of multiolefin content in the butyl rubber ionomer. The adhesion is greatest for butyl rubber ionomers having a high multiolefin content (at least 3.5 mol% of multiolefin monomers or at least 1.5 mol % of residual multiolefins). By taking advantage of these high adhesion levels, a composite article can be formed between the butyl rubber ionomer and the substrate.
摘要:
Bitumen-based pressure sensitive adhesive compositions are provided which comprise bitumen, oil, and an ionomeric elastomer. The adhesive compositions are useful as self adherent waterproofing layers, particularly in roofing applications. The use of the ionomeric elastomer permits formulation of the adhesive to have improved tack at the lower temperatures encountered in such application while maintaining desired flexibility, shear strength, and flow resistance.Also provided are waterproofing membranes comprising the inventive adhesive compositions.
摘要:
An adhesive composition for bonding cured layers of EPDM together is provided which comprises a neutralized sulfonated EPDM elastomeric terpolymer, an organic hydrocarbon solvent or mixture of an organic hydrocarbon solvent and an aliphatic alcohol, a para-alkylated phenol formaldehyde tackifying resin and an alkylphenol or ethoxylated alkylphenol. A method for bonding the cured layers of EPDM together utilizing the adhesive composition is also provided.
摘要:
Adhesive compositions for bonding EPDM elastomers comprise (a) a neutralized sulfonated EPDM elastomeric terpolymer; (b) an organic hydrocarbon solvent; (c) an ionic plasticizer or mixture of ionic plasticiziers; (d) a phenolic hydrocarbon resin or mixture of phenolic hydrocarbon resins and (e) a material selected from mineral oils, petroleum oils, polybutenes, polyisobutylenes and ethylene/propylene copolymers. Such adhesive compositions are particularly suitable for bonding sheets of black EPDM, especially sheets of cured black EPDM, elastomeric membranes together and may also be utilized to bond sheets of cured black EPDM to other uncured elastomers and to non-elastomeric substrates as well.The adhesive compositions to proper selection of the component (e) material and the addition of a color pigment or dye thereto may also be used to bond colored EPDM elastomers such as white, blue, yellow, green, etc.An adhesive composition for bonding sheets of EPDM elastomeric roofing membrane in cases where the membrane is to be anchored to the roof surface by mechanical systems will further contain a hydrophobic silica.
摘要:
Pressure sensitive bitumen-based adhesive compositions are provided which comprise bitumen, oil, an ionomeric elastomer, and gilsonite. The adhesives are particularly useful as self adherent waterproofing layers in roofing. The presence of gilsonite can result in substantial increases in the shear strength of these adhesives at the relatively high temperatures encountered in roofing applications.Also provided are waterproofing membranes comprising the inventive adhesive compositions.
摘要:
This invention relates to hot melt adhesive compositions which include a neutralized EPDM terpolymer which has about 5 to about 50 meq. of neutralized sulfonate groups per 100 grams of the neutralized sulfonated elastomeric EPDM terpolymer, a neutralized sulfonated 1,2-syndiotactic polybutadiene resin which has about 5 to about 50 meq. of neutralized sulfonate groups per 100 grams of the neutralized sulfonated polybutadiene, and about 25 to about 250 parts by weight of a hydrocarbon resin of a petroleum or coal tar distillate having about 5 to about 6 carbon atoms the hydrocarbon resin being composed of aliphatic dienes and monoolefins per 100 parts by weight of the neutralized sulfonated EPDM terpolymer.
摘要:
A butyl rubber ionomer having improved adhesion to substrates whose surfaces have polar functional groups. Examples of such substrate materials include stainless steel, glass, mylar or Teflon®. The adhesion of the butyl rubber ionomer to the substrate is at least 25% greater than the adhesion of a non-ionomeric butyl rubber to the same substrate surface and with certain substrates is more than 150% greater. The adhesion is improved with increasing levels of multiolefin content in the butyl rubber ionomer. The adhesion is greatest for butyl rubber ionomers having a high multiolefin content (at least 3.5 mol% of multiolefin monomers or at least 1.5 mol % of residual multiolefins). By taking advantage of these high adhesion levels, a composite article can be formed between the butyl rubber ionomer and the substrate.