Cyanoacrylate adhesives with improved cured thermal properties u

Details Cyanoacrylate adhesives with improved cured thermal properties u Cyanoacrylate adhesives with improved cured thermal properties u

1992-10-23

1994-02-22

Schofer, Joseph L.

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...

524717, 524722, 524723, 524725, 524742, 524743, 524745, 524746, 524748, 524770, 524772, 524776, 524792, 524795, 524796, 526 89, 526204, 526206, 526208, 526213, 526214, 526215, 526217, 526220, 526222, 526225, 526298, C09J 1106, C09J13314

Patent

active

052887944

ABSTRACT:
A cyanoacrylate monomer adhesive formulation which has improved thermal properties resulting from the inclusion in the formulation of an effective amount for enhancing the thermal resistance of the cured polymer of a mono, poly or hetero aromatic compound characterized by at least three substitutions on an aromatic ring thereof, two or more of said substitutions being electron withdrawing groups selected from the group consisting of NO.sub.2, CN, CF.sub.3, NR.sup.1.sub.3.sup.+, SR.sup.1.sub.2.sup.+, C(.dbd.O)R.sup.1, C(.dbd.O)OR.sup.1, NO, CCl.sub.3, SO.sub.2, S(.dbd.O), SO.sub.3, SO.sub.2 R.sup.1, SO.sub.2 OR.sup.1 and F, one or more of said substitutions being leaving groups selected from the group consisting of F, Br, Cl, I, NO.sub.2, CN, SOR.sup.1, SO.sub.2 R.sup.1 and SO.sub.2 OR.sup.1, and R.sup.1 is an optionally substituted hydrocarbon group. Example such compounds have the formula: ##STR1## where L is the leaving group and the W groups are the electron withdrawing groups.

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