Doris I Hand

US Patent:

7549220, Jun 23, 2009

Filed:

Dec 17, 2003

Appl. No.:

10/740382

Inventors:

Scott D. Kennedy - Canterbury CT, US
Doris I. Hand - Holland MA, US
Michael S. White - Pomfret Center CT, US

Assignee:

World Properties, Inc. - Lincolnwood IL

International Classification:

H05K 3/36

US Classification:

29830, 29829, 29831, 29846, 1562722

Abstract:

A method for the manufacture of a multilayer circuit comprising a liquid crystalline polymer layer, the method comprising treating the multilayer circuit with an amount of heat effective to raise the crystalline to nematic melting point, as defined by the peak endotherm above the glass transition temperature in a differential scanning calorimeter measurement, of the liquid crystalline polymer layer by at least about 10° C.

US Patent:

20020064701, May 30, 2002

Filed:

Sep 11, 2001

Appl. No.:

09/950557

Inventors:

Doris Hand - Dayville CT, US
William Zdanis - Danielson CT, US

International Classification:

H01M008/02
H01B001/20

US Classification:

429/034000, 252/500000, 252/299010, 428/001000, 428/411100

Abstract:

A composite article comprises a porous, conductive layer disposed between a first liquid crystalline polymer layer and a second liquid crystalline polymer layer, wherein the porous conductive layer is impregnated with the first liquid crystalline polymer layer, the second liquid crystalline polymer layer or both liquid crystalline polymer layers. Each liquid crystalline polymer layers may be, independently, a single liquid crystalline polymer, a blend of liquid crystalline polymers, or a blend of non-liquid crystalline polymers and liquid crystalline polymers.

US Patent:

59728116, Oct 26, 1999

Filed:

Jun 4, 1998

Appl. No.:

9/090789

Inventors:

Michael E. St. Lawrence - Thompson CT
Doris I. Hand - Dayville CT
Vincent R. Landi - Danielson CT
Robert H. Walker - Phoenix AZ
Samuel Gazit - Bet Lechem HaGlilit, IL
Raymond R. Miskiavitch - Putnam CT

Assignee:

World Properties, Inc. - Lincolnwood IL

International Classification:

B32B 700

US Classification:

442237

Abstract:

An electrical substrate material is presented comprising a thermosetting matrix of polybutadiene or polyisoprene and a co-curable second resin distinct from the first resin. A peroxide cure initiator and/or crosslinking agent may optionally be added. The presence of a very high surface area particulate filler, preferably fumed silica, is also preferred, in that its presence results in a prepreg which has very little tackiness and can therefore be easily handled by operators. This low tackiness feature allows for the use of conventional automated layup processing, including foil cladding, using one or more known roll laminators. While the prepreg of this invention is tack-free enough to be handled relatively easily by hand, it is also tacky enough to be tacked to itself using a roll laminator (e. g. , nip roller) at room temperature. The composition of this invention is particularly well suited for making electrical circuit substrates for microwave and digital circuits, typically in the form of the thermosetting composition being laminated onto one or both opposed surfaces to a metal conductive foil such as copper.

US Patent:

55716091, Nov 5, 1996

Filed:

Oct 13, 1994

Appl. No.:

8/322890

Inventors:

Michael E. St. Lawrence - Thompson CT
Vincent R. Landi - Danielson CT
Doris I. Hand - Dayville CT
Robert H. Walker - Phoenix AZ
Samuel Gazit - Bet Lechem HaGlilit, IL
Raymond R. Miskiavitch - Putnam CT

Assignee:

Rogers Corporation - Rogers CT

International Classification:

B32B 700

US Classification:

428268

Abstract:

An electrical substrate material is presented which comprises a thermosetting matrix which includes a polybutadiene or polyisoprene resin and an unsaturated butadiene or isoprene containing polymer in an amount of 25 to 50 vol. %; a woven glass fabric in an amount of 10 to 40 vol. %; a particulate, preferably ceramic filler in an amount of from 5 to 60 vol. %; a flame retardant and a peroxide cure initiator. A preferred composition has 18% woven glass, 41% particulate filler and 30% thermosetting matrix. The foregoing component ratios and particularly the relatively high range of particulate filler is an important feature of this invention in that this filled composite material leads to a prepreg which has very little tackiness and can therefore be easily handled by operators. This low tackiness feature allows for the use of conventional automated layup processing, including foil cladding, using one or more known roll laminators. While the prepreg of this invention is tack-free enough to be handled relatively easily by hand, it is also tacky enough to be tacked to itself using a roll laminator (e. g.

US Patent:

58588876, Jan 12, 1999

Filed:

Aug 1, 1996

Appl. No.:

8/690929

Inventors:

Michael E. St. Lawrence - Thompson CT
Doris I. Hand - Dayville CT

Assignee:

World Properties, Inc. - Lincolnwood IL

International Classification:

B32B 700

US Classification:

442237

Abstract:

An electrical substrate material is presented comprising a thermosetting matrix of polybutadiene or polyisoprene in an amount of 25 to 50 volume %; a woven glass fabric in an amount of 10 to 40 volume %; a particulate, preferably ceramic filler, in an amount of from 5 to 60 volume %; and a flame retardant. Importantly, the composition comprises only a single resin, i. e. , polybutadiene or polyisoprene. A peroxide cure initiator and/or crosslinking agent may optionally be added. The presence of a very high surface area particulate filler, preferably fumed silica, is also preferred, in that its presence results in a prepreg which has very little tackiness and can therefore be easily handled by operators. This low tackiness feature allows for the use of conventional automated layup processing, including foil cladding, using one or more known roll laminators. While the prepreg of this invention is tack-free enough to be handled relatively easily by hand, it is also tacky enough to be tacked to itself using a roll laminator (e. g.

US Patent:

60718366, Jun 6, 2000

Filed:

Oct 22, 1998

Appl. No.:

9/176788

Inventors:

Michael E. St. Lawrence - Thompson CT
Doris I. Hand - Dayville CT

Assignee:

World Properties, Inc. - Lincolnwood IL

International Classification:

B32B 0700

US Classification:

442237

Abstract:

An electrical substrate material is presented comprising a thermosetting matrix of polybutadiene or polyisoprene in an amount of about 15 to about 50 volume %; a fabric reinforcement in an amount of 0 to about 40 volume %; a particulate filler, preferably ceramic, in an amount of from 0 to about 60 volume %; microballoons in an amount from 0 to about 60 volume %; and optionally a flame retardant. A peroxide cure initiator and/or crosslinking agent may optionally be added. The presence of a very high surface area particulate filler, preferably fumed silica, is also preferred, in that its presence results in a prepreg which has very little tackiness and can therefore be easily handled by operators. This low tackiness feature allows for the use of conventional automated layup processing, including foil cladding, using one or more known roll laminators. While the prepreg of this invention is tack-free enough to be handled relatively easily by hand, it is also tacky enough to be tacked to itself using a roll laminator (e. g.