The Dow Chemical Company

Thomas W Regulski

Richard J Pilny

Donald A Tomalia

Theodore L Parker

Bruce P Thill

John W Bozzelli

Nancy B Tefertiller

Gerald C Kolb

Robert T Klun

Sharon L Oriel

The invention relates to benzocyclobutene capped benzotrifluoride based fluoroaryl ether compounds which are useful in preparing semi-permeable membranes, and films and coatings useful in electronic applications.

Benzocyclobutene capped fluoroalkyl aromatic based fluoroarylether

Novel cyclic diacetal-alcohols having cycloaliphatic bridging groups.

Cyclic acetal-alcohols

This invention is a process for the preparation of acrylate esters comprising contacting a vinyl halide with carbon monoxide and an organic carbonate in the presence of an effective amount of a group VIII metal catalyst.

Preparation of acrylate esters from vinyl halides and organic carbonates

Aqueous solutions of amide polymers, such as polyacrylamide when treated with small amounts of a water-soluble polyaldehyde and a hypohalite salt at an alkaline pH, react to form firm gels within a short time at ambient temperature. Such gels, which are stable under alkaline as well as acidic conditions, are usefully employed to plug porous subterranean formations, for grouting of leaking soil pipes or wells, and to otherwise render porous structures impermeable to the passage of liquids such as water.

Rendering porous structures impermeable by treatment with pH insensitive

Curable compositions containing (1) an epoxy resin containing a plurality of active hydrogens and (2) and addition polymer of an isocyanatoalkyl ester of an .alpha., .beta.-ethylenically unsaturated carboxylic acid such as 2-isocyanatoethyl methacrylate are usefully employed as coatings for metal substrates and in other applications which require hard surface coatings exhibiting resistance to chemicals and light.

Epoxy resin coating compositions

Ethylenically-unsaturated products are obtained by (a) reacting acrylic acid and 2-oxazoline or a 2-alkyl or aryl-2-oxazoline in an inert liquid reaction medium and (b) recovering the desired product from (a) by heating the reaction mixture under reduced pressure to strip away the liquid diluent and volatile components, thus leaving the desired product as a non-volatile residue. The reaction products can be cross-linked by conventional techniques (e.g. freeradical initiation) to form useful coatings and adhesives. For example, the product produced by heating equal molar amounts of acrylic acid and 2-ethyl-2-oxazoline in benzene gave an ethylenically-unsaturated oligomeric product having a number average molecular weight of 253 and a weight average molecular weight of 460 in approximately 95 percent yield.

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Midland, MI, United States of America

Thomas W Regulski