Atofina Chemicals, Inc.

Other

Corning Incorporated

Arkema Inc.

Barbara L Stainbrook

Peter A Callais

Michael S Mendolia

Joseph M Brennan

Terry Ned Myers

Kenneth Edward Hrdina

Pierre Gerard

Scott Charles Schmidt

Stephanie Magnet

Martin Nosowitz

Jianfeng Lou

Michael A Mueller

Nicolas Passade-Boupat

Kenneth M Malone

Christian Bonardi

Pierre Hebrard

Richard Peres

Scott C Schmidt

Nicholas Passade Boupat

A low thermal expansion glass includes a base glass material having a front surface, a back surface, and a thickness and a glass coating material applied on at least the front surface of the base glass material. The base glass material consists essentially 10 wt % to 20 wt % titania and 80 wt % to 90 wt % silica. The glass coating material also consists essentially of titania and silica, but the total amount of titania in the glass coating material is lower than the total amount of titania in the base glass material. A silica-titania glass element suitable for extreme ultraviolet lithography applications consists of 12 wt % to 20 wt % titania and 80 wt % to 88 wt % silica and has a coefficient of thermal expansion of essentially 0 &#x394;L/L in a temperature range of &#x2212;20&#xb0; C. to +100&#xb0; C.

Low thermal expansion glass for EUVL applications

The present invention relates to the use of poly acrylic and/or methacrylic macroinitiators in the free radical addition reaction of vinyl aromatic monomers to improve the properties of the resulting copolymer and/or composite. More particularly, the present invention relates to the production of poly acrylic and/or poly methacrylic macroinitiators having nitroxyl end groups. Using such macroinitiators in the free radical addition reaction of vinyl aromatics such as polystyrene compatibilizes the acrylic monomer in the vinyl aromatic matrix thereby improving the properties of the resulting polymer.

Methods of producing vinyl aromatic polymers using (meth)acrylic macroinitiators

Thermally stabilized initiator compositions comprising:

Stabilized organic peroxydicarbonate compositions

Stabilized organic peroxydicarbonates compositions

In the process according to the invention for the aqueous suspension polymerization of vinyl chloride, alone or as a mixture with another vinyl monomer, the polymerization initiator comprises at least one compound chosen from dialkyl peroxydicarbonates, peroxy-tert-alkanoates and diacyl peroxides and use is made, as agent for halting the polymerization, of a mono- or disubstituted hydroxylamine. The resins thus obtained exhibit improved color and heat stability.

Process of polymerizing vinyl chloride with hydroxylamines

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Collegeville, PA, United States of America

Barbara L Stainbrook