Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2008-05-01
2011-12-06
Harlan, Robert D. (Department: 1762)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C525S098000, C525S240000
Reexamination Certificate
active
08070908
ABSTRACT:
The present invention relates to (meth)acrylic adhesives with high impact resistance and no or low odor. The compositions comprise at least a (meth)acrylic ester E which may be obtained by esterification of an alcohol ALC and methacrylic or acrylic acid, said alcohol ALC contains at least 5 carbon atoms; and at least a rubber block co-polymer RS being solid at room temperature and which is a co-polymer of styrene and butadiene and/or isoprene and/or ethylene propylene diene monomer; and at least a polymer PL having pending (meth)acrylic groups and is a butadiene/acrylonitrile co-polymer with terminal (meth)acrylic groups or a polyurethane (meth)acrylate or an ester obtainable by esterification of an alcohol ALC-II and methacrylic or acrylic acid and which has a molecular weight between 200 and 9000 g/mol. Such combinations E-RS-PL have lower viscosity than PL and a combination E-RS.
REFERENCES:
patent: 4451615 (1984-05-01), Charnock
patent: 6433091 (2002-08-01), Cheng
patent: WO 02/070620 (2002-09-01), None
patent: WO 02/070620 (2002-09-01), None
De Cooman Ria
Tsuno Shingo
Harlan Robert D.
Oliff & Berridg,e PLC
Sika Technology AG
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