Sealing material for double-glazing pane comprising resin...

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 27/06 (2006.01) C09K 3/10 (2006.01) E06B 3/66 (2006.01)

Patent

CA 2539719

A sealing material for double-glazing panes which eliminates the problem of the necessity of long-time aging after production and comprises a resin composition having high long-term adhesion strength, high shape retention, and high gas-barrier properties and especially having excellent hot-melt tackiness. The sealing material for double-glazing panes is characterized by comprising a resin composition which contains an isobutylene-based diblock copolymer (A) comprising a polymer block (a) derived from an aromatic vinyl compound as a constituent monomer and a polymer block (b) derived from isobutylene as a constituent monomer and which has hot-melt tackiness.

Cette invention concerne un matériau d'étanchéité pour vitres à double vitrage qui élimine le problème associé à la nécessité d'effectuer un vieillissement à long terme après la production et qui renferme une composition de résine présentant une grande force d'adhésion à long terme, une grande aptitude à conserver la forme, une bonne perméabilité au gaz et en particulier une excellente propriété de pouvoir adhésif à chaud. Ce matériau d'étanchéité pour vitres à double vitrage se caractérise en ce qu'il comprend une composition de résine qui contient un copolymère dibloc à base d'isobutylène (A) comprenant un bloc polymère (a) dérivé d'un composé vinylique aromatique comme monomère constituant et un bloc polymère (b) dérivé d'isobutylène comme monomère constituant et présente un pouvoir adhésif à chaud.

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