| 摘要 |
#CMT# #/CMT# Composition useful in structural adhesive comprises at least one methacrylate ester monomer; at least one elastomeric block copolymer containing a styrene and at least a second monomer; a elastomer where a Hildebrand solubility parameter of the elastomer is compatible with a Hildebrand solubility parameter of the used block copolymer; and a formed particles of a thermoplastic shell and elastomeric core. #CMT# : #/CMT# An independent claim is included for a combined use of elastomeric block copolymer comprising styrene and isoprene, a elastomeric block copolymer comprising styrene and second monomer, functionalized liquid elastomer, where the Hildebrand solubility parameter of the liquid elastomer is compatible with the Hildebrand solubility parameter of the elastomeric block copolymer and elastomeric polymer particles, for the preparation of the composition in the structural adhesive having a rupture elongation of >= 80% and a rheology allow to applying the composition having a thickness of at least 3-5 mm on a vertical surface without flow under gravity effect. #CMT#USE : #/CMT# The composition is useful in structural adhesive. The composition is useful for allowing the adhesion of a material on another material (claimed). The composition is useful in the field of automobile manufacturing or railway. #CMT#ADVANTAGE : #/CMT# The composition has rupture elongation of >= 80% and rheology property allowing to apply the composition having thickness of at least 3-5 mm on vertical surface without flow under gravity effect. The composition has good strength (e.g. shear strength) and elasticity and improved viscosity. The composition has excellent mechanical resistance. #CMT#POLYMERS : #/CMT# Preferred Composition: The composition further comprises at least an acrylate ester monomer, in which a part of alcohol has at least a linear chain having at least 6 carbon atoms; polycholoroprene; and at least an additional compound comprising accelerator of polymerization, rheological agent, an adhesion promoter and acid monomer. Preferred Components: The second monomer of elastomeric block copolymer comprises isoprene, butadiene and ethylene. The elastomeric copolymer is styrene-styrene-styrene copolymer, styrene-butadiene-styrene and/or styrene-isoprene-butadiene-styrene. The elastomeric copolymer or its mixture is present at 5-30 wt.% of the composition. The elastomer is optionally functionalized polybutadiene and polyisoprene. The elastomer is present at 7-15 wt.% of the composition. The particles are acrylonitrile-butadiene-styrene particle, methacrylate-butadiene-styrene, methacrylate-acrylonitrile-butadiene-styrene and/or methacrylate-acrylonitrile. The particle is present at 2-20 wt.% of the composition. The acrylate ester monomer is acrylate or methacrylate monomer, preferably a mixture of two acrylate monomer. The acrylate monomer is present at least 10 wt.% of the composition. #CMT#EXAMPLE : #/CMT# Typical composition comprised (in %): methacrylate ester monomer (>= 40); elastomeric block copolymer (or its salt or mixture) (15-21); elastomer (functionalized polybutadiene) (8-10); particles (core shell) (2-15); monomer (5-10); Disparlon(RTM: Versatile polyamide thixotrope) (0-3); acid monomer (1-4); and Genorad(RTM: Acrylate or methacrylate ester) (0-3). |
