Air Products and Chemicals, Inc.

Delsper, LP

Mark David Conner

Courtney Thompson Thurau

Gamini Ananda Vedage

Peter A Lucas

Richard V C Carr

Lloyd Mahlon Robeson

Kevin Rodney Lassila

Michael E Ford

Thomas A Johnson

William Edward Starner

Andrew Francis Nordquist

William Franklin Burgoyne, Jr

Richard Henry Bott

Ellen Margaret O'Connell

William Steven Collins

William F Burogyne, Jr

Peter Andrew Lucas

Richard VC Carr

Mixed polycycloaliphatic amines (MPCA) and alkylates thereof (MPCA alkylates), methods for making mixed polycycloaliphatic MPCA amines and MPCA alkylates thereof, as well as polymeric compositions, such as spray-applied polyurea coating compositions, comprising said mixed amines MPCA and MPCA alkylates thereof are described herein. In one embodiment, the polymeric composition comprises an isocyanate component, and a resin component comprising an organic compound having the following Formula I: where R, Rand Rare each independently selected from a hydrogen atom, an alkyl group comprising from 1 to 20 carbon atoms, an aryl group comprising from 3 to 12 carbon atoms, an aralkyl group comprising from 3 to 12 carbon atoms and combinations thereof, provided that there is at least one alkyl group within Formula I, and X is a methylene bridged polycycloaliphatic amine (MPCA).

Mixed polycycloaliphatic amines (MPCA) and MPCA alkylates

A polymeric composition comprising a first polymer chosen from a poly(arylene ether) polymer including polymer repeat units of the following structure: &#x2014;(O&#x2014;Ar&#x2014;O&#x2014;Ar&#x2014;O&#x2014;)&#x2014;(&#x2014;O&#x2014;Ar&#x2014;O&#x2014;Ar&#x2014;O)n- where Ar, Ar, Ar, and Arare identical or different aryl radicals, m is 0 to 1, n is 1 m; a polysulfone, a polyimide, a poly(etherketone), a polyurea, a polyurethane, and combinations thereof and a second polymer comprising a per(phenylethynyl) arene polymer derivative. Cured films containing the polymer can exhibit at least one of the following properties: Tg from 160&#xb0; C. to 180&#xb0; C., a dielectric constant below 2.7 with frequency independence, and a maximum moisture absorption of less than 0.17 wt %. Accordingly, the polymer is especially useful, for example, in interlayer dielectrics and in die-attach adhesives.

Polymeric compositions comprising per(phenylethynyl) arene derivatives

A composite material that is suitable for the protection of personnel and/or property from impact due to ballistic projectiles and method for making same are disclosed herein. In one embodiment, there is provided composite for resisting impact from an oncoming projectile having a front strike face and a back wear face comprising: an elastomer; and an impact resistive substrate wherein at least a portion of the impact resistive substrate is coated by the elastomer to provide the composite having a front strike face coating and a back wear face coating and wherein a ratio of weight of front strike face coating to back wear face coating ranges from 1:1.2 to 1:100.

Impact resistive composite materials and methods for making same

Reductive alkylation of branched, short chain diamines, such as 2-methyl-1,5-pentanediamine, with certain aldehydes or ketones of moderate molecular weight, such as benzaldehyde or methyl isobutyl ketone, produces novel tri- and difunctional amines which are useful in curing epoxy resins to compositions having improved flexibility and enhanced resistance to moisture and chemicals. Particularly favorable results are achieved when this curative is combined in the epoxy formulation with low molecular weight acrylic copolymers added as flexibilizers. Further improvements are available by including in the recipe monofunctional epoxy or acrylic reactive diluents.

Amine curatives for flexibilized epoxies

Flexible epoxy resins are made by curing the epoxy with an amine curing agent in the presence of a low molecular weight acrylate copolymer made from a major amount of a lower aliphatic ester or amide of acrylic or methacrylic acid and a minor amount of an ethylenically unsaturated monomer having functionality reactive with functional groups present in the epoxy resin or its curing agent. The acrylate copolymer has a number average molecular weight in the range of 1000 to 6000, preferably 2000 to 3000, and a ratio of weight average to number average molecular weight in the range of 1 to 3.5. Copolymers of butylacrylate and acrylic acid or maleic anhydride are favored. Further advantages are realized by including in the cure formulation a monofunctional diluent reactive with the curative.

Flexibilizing epoxy resins with low molecular weight acrylate copolymers

This invention relates to a process for producing bis-[aminophenyl ketones] and the resulting compositions which are suitable for the preparation of engineering polymers, e.g., polyimides, polyurethanes and a host of other resinous materials. The bis-[aminophenyl ketones] are formed by reacting 2 moles of a nitrophenyl acid halide with an aromatic bridging composition having at least two hydrogen atoms of sufficient reactivity to undergo acylation reactions whereby nitrophenyl ketone groups are attached to the aromatic bridging group. The resulting bis-[nitrophenyl ketones] then are converted to the amine by hydrogenation or by double nucleophilic displacement with an aminophenol. The invention also relates to polyimides and polyamides prepared from such bis-[aminophenyl ketones].

Bis-[aminophenyl ketones] compounds

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New Tripoli, PA, United States of America

Mark David Conner