Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2005-09-20
2008-09-02
Mulcahy, Peter D (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S391000, C524S297000, C524S447000, C524S425000
Reexamination Certificate
active
07420009
ABSTRACT:
Described is a low-emission adhesive, whose polymers are dissolved in a mixture of acetone and ethanol. The adhesive is characterized by very low emissions of solvents, with otherwise equally good properties compared to standard solvent-synthetic resin based adhesives. In particular with respect to viscosity and spreadability, surface tension, depth of penetration, wettability, simplicity and speed of processing, as well as adhesion, gluing strength and adhesive spectrum, the adhesive of the invention is equal to other adhesives based on solvents and thus superior to dispersion-adhesives that are based on aqueous solutions. Due to its low solvent emissions and absence of chlorinated solvents, the present adhesive is suitable for applications for which only dispersion-adhesives that are based on aqueous dispersions were reserved until now. This is true in particular for applications in enclosed spaces. The adhesive is very suitable for gluing of wooden floors in internal construction work.
REFERENCES:
patent: 3770547 (1973-11-01), Kelsey
patent: 5416142 (1995-05-01), Bush et al.
patent: 5525656 (1996-06-01), Heiling et al.
patent: 5962560 (1999-10-01), Congelio et al.
Gahlman Frank
Stauf Wolfgang
Butler Snow O'Mara Stevens & Cannada, PLLC
Mulcahy Peter D
Stauf Klebstoffwerk GmbH
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