COMPOSICION ADHESIVA PARA MATERIALES DE COPOLIMEROS (MET) ACRILICOS

LA INVENCION SE REFIERE A UNA COMPOSICION ADHESIVA PARA MATERIALES PLASTICOS A BASE DE (CO)POLIMERO (MET)ACRILICO, QUE DERIVAN DE 80 A 100% EN PESO DE METACRILATO DE METILO Y DE 0 A 20% EN PESO DE AL MENOS UN MONOMERO CON INSATURACION ETILENICA COPOLIMERIZABLE CON EL METACRILATO DE METILO. LA COMPOS...

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Bibliographische Detailangaben
Hauptverfasser:	HEIM, PHILIPPE, MAGNE, JACQUES, BRUNEAU, JEAN-MICHEL
Format:	Patent
Sprache:	spa
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON DYES GENERAL PROCESSES OF COMPOUNDING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS AS ADHESIVES WORKING-UP
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Beschreibung
Zusammenfassung:	LA INVENCION SE REFIERE A UNA COMPOSICION ADHESIVA PARA MATERIALES PLASTICOS A BASE DE (CO)POLIMERO (MET)ACRILICO, QUE DERIVAN DE 80 A 100% EN PESO DE METACRILATO DE METILO Y DE 0 A 20% EN PESO DE AL MENOS UN MONOMERO CON INSATURACION ETILENICA COPOLIMERIZABLE CON EL METACRILATO DE METILO. LA COMPOSICION COMPRENDE 1,3-DIOXOLANO ASOCIADO A ACIDO FORMICO O UN MONO-, DIO TETRAGLIMO, UN (CO)POLIMERO (MET)ACRILICO DISUELTO Y, EVENTUALMENTE ADITIVOS DILUYENTES. ARTICULOS EN (CO)POLIMERO (MET)ACRILICO OBTENIDOS POR COLADA, EXTRUSION O INYECCION Y QUE COMPRENDE UNA JUNTA DE ADHESION FORMADA A PARTIR DE DICHA COMPOSICION ADHESIVA. Adhesive composition for articles made of (meth)acrylic (co)polymer (A) comprising 80-100 wt.% of methyl methacrylate monomer and 0-20 wt.% of at least one ethylenically unsaturated monomer which is copolymerisable with the methyl meth acrylate. The composition comprises 45-90 wt.% 1,3-dioxolane, 2-25 wt.% of formic acid or mono-, di- or tetraglyme, 2-30 wt.% dissolved (meth)acrylic (co)polymer (B) and 0-40 wt.% of organic diluting additives. Also claimed is an article containing a joint obtained using the claimed composition. Preferably the composition comprises 60-85 wt.% of 1,3-dioxolane, 3-20 wt.% of formic acid or mono-, di- or tetraglyme, 10-16 wt.% of dissolved (meth)acrylic (co)polymer and 10-40 wt.% of diluting organic additives. The organic additives are selected from ketones, ethers, alcohols, or ester solvents of the copolymer (A), especially methylethylketone, methylisobutylketone, acetone, alcohol diacetone, dimethoxymethane, methyl acetate, ethyl acetate, butyl acetate, isobutyl acetate, methyl phthalate, ethyl formate and butanol. The dissolved (co)polymer (B) is methyl polymethacrylate or a copolymer of methyl polymethacrylate and at least one alkyl acrylate monomer where the alkyl group contains 1-10C and has a weight average molecular mass of less than 1000000, preferably 500000-1000000 and especially 500000-700000.