Abstract: A containment system encapsulates a sharp medical instrument. The containment system includes a container having an upper end for insertably accommodating the medical instrument. The container supports a pair of liquid components of a two-part hardenable compound which are separated by a rupturable divider. The components are mixed upon rupture of the divider caused by insertion of the medical instrument thereinto. The hardenable compound thereby hardens around the medical instrument, quickly and permanently encapsulating the inserted instrument.

Abstract: The present invention provides anaerobic adhesive compositions, reaction products of which demonstrate controlled-strength at ambient temperature conditions and enhanced resistance to thermal degradation at elevated temperature conditions. The compositions are (meth)acrylate- and/or polyorganosiloxane-based and may include one or more of a variety of other components, such as certain coreactants, a maleimide component, a diluent component reactive at elevated temperature conditions, mono- or poly-hydroxyalkane components, and other components.

Abstract: The present invention is directed to cyanoacrylate-based compositions, which include in addition to the cyanoacrylate component, a thermal-resistance conferring agent, such as an alkylating agent and/or silylating agent, which provides reaction products of the compositions with improved thermal resistance properties.

Abstract: The present invention is directed to an anaerobic adhesive composition which includes an acrylate monomer; a coreactant monomer; and an anaerobic cure-inducing composition. The composition may also include a maleimide compound. Reaction products of compositions in accordance with this invention exhibit superior resistence to thermal depredation, such as under elevated temperature conditions.

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 naphthosultone compound having at least one strong electron withdrawing group thereon, suitably a nitro group.

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 sulfur containing compound of the formula: ##STR1## where R.sup.1 and R.sup.2 are, respectively, monovalent and divalent hydrocarbon groups which may be optionally substituted with halogen, NO.sub.2, oxo, CN, alkoxy, hydroxy, acyloxy or SO.sub.2 or interrupted by one or more ether oxygen atoms.

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 compound of the formula: ##STR1## where R is C(CN).sub.2, C(CO.sub.2 R.sup.e).sub.2, C(SO.sub.2 R.sup.e).sub.2 or C(Ph).sub.2 ; R.sup.a, R.sup.b, R.sup.c and R.sup.d are independently H, monovalent hydrocarbon, halogen or strong electron withdrawing groups; or two of R.sup.a, R.sup.b, R.sup.c and R.sup.d combined form a fused hydrocarbon ring; R.sup.1 is C(CN).sub.2, C(CO.sub.2 R.sup.e).sub.2, C(SO.sub.2 R.sup.e).sub.2 or C(Ph).sub.2, or R.sup.1 and R.sup.b combined form a fused ring having a C(CN).sub.2, C(CO.sub.2 R.sup.e).sub.2, C(SO.sub.2 R.sup.e).sub.2 or C(Ph).sub.2 group in conjugation with R; R.sup.e is alkyl and Ph is phenyl orR and R.sup.1 are both O; and R.sup.a, R.sup.b, R.sup.c and R.sup.

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.

Abstract: Method of forming highly sensitive, high resolution positive photoresist compositions that are developed from polycarbonates derived from t-diols and various diphenols and homopolycarbonates from t-diols, mixed with 2-10% of onium salts wtih complex metal halide counterions. The high sensitivity of the photoresist compositions is due to the thermodynamic stabilities of the resulting incipient dicarbocations and dienes.