John R Keryk

6596821, Jul 22, 2003

Mar 5, 2002

10/091678

Dimitris E. Katsoulis - Tokyo, JP
Bizhong Zhu - Midland MI
John R. Keryk - Midland MI
Frederick J. McGarry - Weston MA
Zhongtao Li - Midland MI

Dow Corning Corporation - Midland MI

C08G 7704

525474, 525477, 525478, 528 15

A process for producing a cured silsesquioxane resin. The process includes fractionating the silsesquioxane resin a plurality of times utilizing an organic solvent in combination with an organic non-solvent. The fractionated resin is then stripped of excess solvent. The stripped resin is then mixed with a cross-linking compound to form a curable composition. The curable composition is cured to form a cured resin having high fracture toughness and strength without the loss of elastic modulus.

6646039, Nov 11, 2003

Mar 5, 2002

10/091685

Zhongtao Li - Midland MI
Frederick J. McGarry - Weston MA
Dimitris E. Katsoulis - Tokyo, JP
John R. Keryk - Midland MI
Debora F. Bergstrom - Midland MI
Kermit S. Kwan - Midland MI
Bizhong Zhu - Midland MI

Dow Corning Corporation - Midland MI

C08K 336

524492, 524588, 528 15, 528 25, 528 31, 528 32

A hydrosilylation reaction curable composition including a silsesquioxane polymer, a cross-linking compound, a hydrosilylation reaction catalyst and colloidal silica having a surface coating formed thereon. The curable composition is cured to form a cured resin having high fracture toughness and strength without the loss of elastic modulus and glass transition temperature.

6689859, Feb 10, 2004

Mar 5, 2002

10/092055

Zhongtao Li - Midland MI
Frederick J. McGarry - Weston MA
John R. Keryk - Midland MI
Bizhong Zhu - Midland MI
Dimitris E. Katsoulis - Tokyo, JP

Dow Corning Corporation - Midland MI

C08G 7706

528 12, 528 31, 528 32, 528 33, 528 34, 528 43, 528 15, 525477, 525478

A hydrosilylation reaction curable composition that includes a silsesquioxane polymer, a mixture of silanes or siloxanes as a cross-linking compound and a hydrosilylation reaction catalyst. The curable composition is cured to form a cured resin having high fracture toughness and strength without the loss of elastic modulus.

6803409, Oct 12, 2004

May 29, 2002

10/158365

John Robert Keryk - Midland MI, 48640
Dimitris Elias Katsoulis - Tokyo 150-0035, JP
Katsuya Eguchi - Kanagawa, JP

C08G 7706

524837, 524860, 524863, 525474, 525477, 528 18, 528 31, 528 32, 528 33, 528 34

An organopolysiloxane copolymer, comprising (i) R SiO units, (ii) random R SiO units, and (iii) linear (R SiO) units, wherein R is independently hydrocarbyl or halogen-substituted hydrocarbyl, R and R are independently R or H, n has an average value of from 5 to 500, the mole ratio of R SiO units to R SiO units is from 1 to 30, and the mole ratio of R SiO units and R SiO units combined to (R SiO) units is from 3 to 600 when the copolymer contains aliphatic unsaturation or from 1 to 600 when the copolymer is free of aliphatic unsaturation; and a method of preparing the organopolysiloxane copolymer.

7037592, May 2, 2006

Feb 25, 2003

10/374802

Bizhong Zhu - Midland MI, US
Herschel H. Reese - Midland MI, US
Dimitris E. Katsoulis - Midland MI, US
John R. Keryk - Midland MI, US
Yuhong Wu - Cambridge MA, US
Frederick J. McGarry - Weston MA, US

Dow Coming Corporation - Midland MI

B32B 13/12

428451, 428524, 428413, 428500, 528 31, 528 32, 528 33

A fiber reinforced composite including layers of fibers, each layer being impregnated with a resin. The layers include in combination a layer of an addition cured silicone resin and a layer of an organic resin. The layers form a hybrid composite having a higher modulus retention at elevated temperatures than the addition cured silicone resin alone. The hybrid composite's mechanical properties are similar to the organic resin composite, but demonstrate enhanced thermal resistance and reduced flammability.

7514148, Apr 7, 2009

Jan 20, 2006

11/337270

Bizhong Zhu - Midland MI, US
Herschel H. Reese - Midland MI, US
Dimitris E. Katsoulis - Midland MI, US
John R. Keryk - Midland MI, US
Yuhong Wu - Cambridge MA, US
Frederick J. McGarry - Weston MA, US

Massachusetts Institute of Technology - Cambridge MA
Dow Corning Corporation - Midland MI

B32B 13/12

428413, 428451, 428500, 428524, 528 31, 528 32, 528 33

A fiber reinforced composite including layers of fibers, each layer being impregnated with a resin. The layers include in combination a layer of an addition cured silicone resin and a layer of an organic resin. The layers form a hybrid composite having a higher modulus retention at elevated temperatures than the addition cured silicone resin alone. The hybrid composite's mechanical properties are similar to the organic resin composite, but demonstrate enhanced thermal resistance and reduced flammability.

58309500, Nov 3, 1998

Dec 31, 1996

8/775557

Dimitris Elias Katsoulis - Midland MI
John Robert Keryk - Midland MI
Frederick Jerome McGarry - Weston MA
Bizhong Zhu - Somerville NJ

Dow Corning Corporation - Midland MI
Massachusetts Inst. Tech. - Midland MI

C08F28300

525477

Novel rubber-modified rigid silicone resins a novel method of making the same are disclosed. The resins are the copolymerized reaction product of (A) an organosilicon composition selected from the group consisting (I) an organosilicone resin, (II) hydrolyzable precursors of (I), and an hydrolyzate of (II) and (B) an silicone rubber. In the method of the invention, the copolymerization step is carried out in an organic solvent, preferably utilizing a relatively weak condensation catalyst. Thereafter, the solution is devolatilized and the composition cured by heating.

56080964, Mar 4, 1997

Dec 28, 1995

8/580417

Dimitris E. Katsoulis - Midland MI
John R. Keryk - Midland MI

Dow Corning Corporation - Midland MI

C07F 708

556462

The invention relates to a method of forming siloxane polymers using a heteropoly catalyst having a Keggin structure. The method comprises contacting a fluid comprising at least one siloxane polymer precursor selected from the group consisting of cyclic siloxanes (I) having the formula (RR'SiO). sub. a and linear siloxanes (II) having the formula ##STR1## where R is a substituted or unsubstituted monovalent hydrocarbon having from 1 to 6 carbon atoms, R' is hydrogen or a substituted or unsubstituted monovalent hydrocarbon having from 1 to 6 carbon atoms, a is at least 3 and b is at least 1; with an effective amount of a heteropoly catalyst having a Keggin structure, selected from the group consisting of heteropoly acids (III) having the formula H. sub. n XM. sub. 12 O. sub. 40, salts thereof and mixed acid-salts thereof, where X is B. sup. +3, Si. sup. +4, Ge. sup. +4, p. sup. +5, M is Mo. sup.