Philip Bernstein

US Patent:

41221338, Oct 24, 1978

Filed:

Mar 23, 1977

Appl. No.:

5/780579

Inventors:

Philip Bernstein - Yardley PA
James P. Coffey - Hatboro PA
Alan E. Varker - Philadelphia PA

Assignee:

ESB Incorporated - Phildelphia PA

International Classification:

C08F25500
C08F 834

US Classification:

260878R

Abstract:

A material useful as a separator in batteries and a process for making the material is provided. This material is a polyolefin having grafted to it side chains derived from an ethylenically unsaturated ionogenic monomer and cross-linked with sulfur.

US Patent:

41316371, Dec 26, 1978

Filed:

Mar 23, 1977

Appl. No.:

5/780578

Inventors:

Philip Bernstein - Yardley PA
James P. Coffey - Hatboro PA
Alan E. Varker - Philadelphia PA

Assignee:

ESB Incorporated - Philadelphia PA

International Classification:

C08F25500

US Classification:

260877

Abstract:

A process for preparing a polymeric material grafted throughout its bulk is provided. A polymer having finely divided particles is blended with silica and maintained in a fluidized bed. The polymer is activated by passing ozone uniformly through the blend to initiate incipient labile sites in the molecular structure of the polymer. The polymer is then reacted with an ethylenically unsaturated ionogenic monomer to graft polymerize the monomer onto the polymer. The grafted polymer may then be converted to a salt form by reacting with alkaline compounds. The resultant powders can be fused into any desired shape by conventional polymer plastic processes.

US Patent:

42539277, Mar 3, 1981

Filed:

Jul 17, 1978

Appl. No.:

5/925591

Inventors:

Philip Bernstein - Yardley PA
James P. Coffey - Hatboro PA
Alan E. Varker - Philadelphia PA

Assignee:

ESB Inc. - Philadelphia PA

International Classification:

C08F25500

US Classification:

20415917

Abstract:

A material useful as a separator in batteries and a process for making the material is provided. This material is a polyolefin having grafted to it side chains derived from an ethylenically unsaturated ionogenic monomer and cross-linked with sulfur.

US Patent:

40886280, May 9, 1978

Filed:

Aug 12, 1976

Appl. No.:

5/713683

Inventors:

Philip Bernstein - Yardley PA
James P. Coffey - Hatboro PA

Assignee:

ESB Incorporated - Phila. PA

International Classification:

H01M 208
H01M 1054
C08K 304
C08K 501

US Classification:

260 4246

Abstract:

A tape comprised of an atactic polypropylene and a non-conductive filler is described. This tape is useful in a process which enables a secondary battery having a defective seal to be repaired safely while remaining in operation.

US Patent:

42062756, Jun 3, 1980

Filed:

Jul 17, 1978

Appl. No.:

5/925592

Inventors:

Philip Bernstein - Yardley PA
James P. Coffey - Hatboro PA
Alan E. Varker - Philadelphia PA

Assignee:

ESB Incorporated - Philadelphia PA

International Classification:

H01M 216

US Classification:

429206

Abstract:

A material useful as a separator in batteries and a process for making the material is provided. This material is a polyolefin having grafted to it side chains derived from an ethylenically unsaturated ionogenic monomer and cross-linked with sulfur.

US Patent:

39377504, Feb 10, 1976

Filed:

Dec 12, 1973

Appl. No.:

5/426611

Inventors:

Philip Bernstein - Yardley PA
John P. Stirpe - Trenton NJ

Assignee:

ESB Incorporated - Philadelphia PA

International Classification:

C08G 4500

US Classification:

260830TW

Abstract:

Perfluoro compound-epoxy resin compositions manifesting oil and soil resistance said compositions comprising an epoxy resin and a block copolymer of the type [ABA]. sub. n wherein A is a perfluoro group having from 8 to 10 carbon atoms, B is a low molecular weight functionality reactive with the epoxy resin and n is from 1 to about 5.

US Patent:

40716619, Jan 31, 1978

Filed:

Aug 12, 1976

Appl. No.:

5/713682

Inventors:

Philip Bernstein - Yardley PA
James P. Coffey - Hatboro PA
Stanley M. Davis - Princeton NJ

Assignee:

ESB Incorporated - Phila PA

International Classification:

H01M 650

US Classification:

429 49

Abstract:

A process is described for repairing secondary batteries which have defective seals. The process of repair can be performed safely while the battery is in operation.