Rohm and Haas Company

Dow Global Technolgoies LLC

Nathan Tait Allen

Brian L Goodall

David Craig Molzahn

Arthur A Chin

Dean M Millar

Lester Howard McIntosh, Iii

Robert Butterick

Ward Thomas Brown

Andrew G Batzell

Thomas Cleveland Kirk

Karl Allen Bromm

Martin Heuts

Arthur Achhing Chin

Dean Michael Millar

Brian Leslie Goodall

Andrew Gordon Batzell 3Rd

Lester Howard Mcintosh Iii

Robert Butterick Iii

A process for production of a borohydride compound M(BH). The process has three steps. The first step combines a compound of formula (RO)M with aluminum, hydrogen and a metallic catalyst containing at least one metal selected from the group consisting of titanium, zirconium, hafnium, niobium, vanadium, tantalum and iron to produce a compound of formula M(AlHOR), wherein Ris phenyl or phenyl substituted by at least one alkyl or alkoxy group; M is an alkali metal, Be or Mg; and y is one or two; wherein the catalyst is present at a level of at least 200 ppm based on weight of aluminum. The second step combines the compound of formula M(AlHOR)with a borate, boroxine or borazine compound to produce M(BH)and a byproduct mixture containing alkali metal and aluminum aryloxides. The third step separates M(BH)from the byproduct mixture.

Process for production of a borohydride compound

A process for production of a metal hydride compound MH, wherein x is one or two and M is an alkali metal, Be or Mg. The process comprises combining a compound of formula (RO)M with aluminum, hydrogen and at least one metal selected from among titanium, zirconium, hafnium, niobium, vanadium, tantalum and iron to produce a compound of formula MH. Ris phenyl or phenyl substituted by at least one alkyl or alkoxy group. A mole ratio of aluminum to (RO)M is from 0.1:1 to 1:1. The catalyst is present at a level of at least 200 ppm based on weight of aluminum.

Process for production of a metal hydride

A compound of formula M(AlHOR), wherein Ris phenyl substituted by at least one of: (i) an alkoxy group having from one to six carbon atoms; and (ii) an alkyl group having from three to twelve carbon atoms; wherein M is an alkali metal, Be or Mg; and y is one or two.

Process for production of an aluminum hydride compound

A process for forming an opacifying pigment encapsulated in polymer including (a) dispersing a pigment particle having an average particle diameter of from 150 to 500 nm and an index of refraction of at least 1.8 such as, for example, TiO2 in a medium with from 0.1% to 10% by weight, based on the weight of said pigment particle, sulfur acid-functional first polymer whereby the zeta potential of the dispersed pigment particle is less than &#x2212;28 mV between pH 5 and pH 8; and (b) performing an emulsion polymerization in the presence of the dispersed pigment particle to provide from 10% to 200%, by weight, based on the weight of the pigment particle, second polymer that at least partially encapsulates the dispersed pigment particle. Also provided are the encapsulated pigment particle so formed and compositions including the encapsulated pigment particle.

Opacifying pigment particle

An opacifying pigment that includes a pigment particle having an average particle diameter of from 0.005 to 5 microns and an index of refraction of at least 1.8 such as, for example TiO2, at least partially encapsulated in polymer is provided. Also provided are processes for forming the encapsulated pigment particle and compositions including the encapsulated pigment particle.

Catalyst structures comprising a single palladium metal center and a substituted tri-arylphosphine ligand. Also disclosed are methods of making and using the catalyst structures to facilitate polymerization reactions and Heck coupling reactions.

Single site palladium catalyst complexes

Copolymers and terpolymers containing acyclic aliphatic olefin derived units and polar monomer derived units are disclosed. Also disclosed are methods of making such copolymers and terpolymers using late transition metal catalyst complexes.

Substantially linear polymers and methods of making and using same

Ligand synthesis methods for the preparation of ligands having the formula wherein Q is selected from phosphorus, arsenic and antimony; wherein X, Xand Xare carbon anions; and, wherein Ris selected from &#x2014;SO, &#x2014;SON(R), &#x2014;CO, &#x2014;PO, &#x2014;AsO, &#x2014;SiO, &#x2014;C(CF)O; where Ris selected from a hydrogen, a halogen, a hydrocarbyl group and a substituted hydrocarbyl group, are disclosed. Also disclosed are methods of complexing the ligands with late transition metals to form catalyst complexes that catalyze polymerization reactions and/or Heck coupling reactions.

Growing community of inventors

Philadelphia, PA, United States of America

Nathan Tait Allen