John T Bard

8430957, Apr 30, 2013

May 31, 2012

13/484982

Wilfried Adolf Hohn - Erfstadt, DE
Kirill N. Bakeev - Newark DE, US
John Kenneth Bard - Wilmington DE, US
Michael Dittel - Dusseldorf, DE

Hercules Incorporated - Wilmington DE

C04B 24/38
C04B 28/02

106805, 106696, 106730

Hydroxyethylcellulose with a low molar substitution and which is uniformly substituted is useful in cement-based systems, including mortars. The cement-based system exhibits long pot life, as well as very high water retention capability at hot temperature, as well as better paste stability and optimized setting behavior for hot as well as cold temperature compared to typical, cement-based systems with commercial cellulose ether compounds. Less hydrophilic cellulose ethers such as methylhydroxyethylcellulose can be added as a second cellulose ether.

50683039, Nov 26, 1991

Sep 28, 1990

7/588627

John K. Bard - Wilmington DE
Julia S. Burnier - Wilmington DE

Hercules Incorporated - Wilmington DE

C08G 7704

528 25

A crosslinkable organosilicon prepolymer and a crosslinked organosilicon polymer comprising alternating hydrocarbon and cyclic polysiloxane radicals, which is the hydrosilation reaction product of: (a) at least one polyene having at least two non-aromatic, non-conjugated carbon-carbon double bonds highly reactive in hydrosilation, the carbon-carbon double bonds being either in an alpha, beta or gamma position on a linear carbon moiety, next to two bridgehead positions in a strained polycyclic aliphatic ring structure, or in a cyclobutene ring, other than polycyclic polyenes having two reactive double bonds in a fused ring system; (b) at least one polycyclic polyene having at least two chemically distinguishable non-aromatic, non-conjugated carbon-carbon double bonds in its rings; (c) at least one cyclic polysiloxane containing three or more. tbd. SiH groups.

50083600, Apr 16, 1991

Oct 16, 1989

7/422214

John K. Bard - Wilmington DE
Julia S. Burnier - Wilmington DE

Hercules Incorporated - Wilmington DE

C08G 7704

528 25

This invention is directed to a prepreg which comprises fiber reinforcement impregnated with the partial hydrosilation reaction product of: (a) at least one polyene having at least two non-aromatic carbon-carbon double bonds highly reactive in hydrosilation, the carbon-carbon double bonds being either in an alpha, beta or gamma position on a linear carbon moiety, next to two bridgehead positions in a strained polycyclic aliphatic ring structure, or in a cyclobutene ring; (b) at least one polycyclic polyene having at least two chemically distinguishable non-aromatic, non-conjugated carbon-carbon double bonds in its rings; and (c) at least one cyclic polysiloxane containing three or more. tbd. SiH groups; which is substantially tack-free. This invention is also directed to a laminate which is prepared by curing one or more of the prepregs beyond their gel point, and which may be clad with conductive material, and printed circuit boards made from such laminates.

55233740, Jun 4, 1996

Oct 26, 1993

8/141653

John K. Bard - Wilmington DE
Richard L. Brady - Wilmington DE
Raymond T. Leibfried - Newark DE
De K. Loo - Hockessin DE

Hercules Incorporated - Wilmington DE

C08G 7704
C08G 7712

528 26

Curable compositions including epoxy-functional compounds and polyenes, as well as cyclic polysiloxanes, and/or tetrahedral siloxysilanes, and/or linear polysiloxanes; along with, or instead of these polyenes and silicon compositions, crosslinkable prepolymers prepared from such polyenes and silicon compounds may be included. A curing agent, and yet additionally, a curing accelerator, may also be included. These compositions can be thermally cured, in the presence of hydrosilation catalysts.