James Caleb Bertram

US Patent:

49468170, Aug 7, 1990

Filed:

Nov 18, 1988

Appl. No.:

7/274264

Inventors:

James L. Bertram - Lake Jackson TX
Louis L. Walker - Clute TX
Van I. W. Stuart - Missouri City TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

B01J 3112
B01J 3102

US Classification:

502154

Abstract:

Latent catalysts for epoxy reactions are prepared by reacting a tetrasubstituted onium compound such as tetrabutylphosphonium acetate acetic acid complex with an acid or metal salt of an acid having a weak-nucleophilic anion such as fluoboric acid. These catalysts provide stable latent catalysts for epoxy resins for advancement or curing reactions.

US Patent:

51400790, Aug 18, 1992

Filed:

Apr 15, 1991

Appl. No.:

7/685332

Inventors:

John W. Muskopf - Lake Jackson TX
Louis L. Walker - Clute TX
James L. Bertram - Lake Jackson TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08G 5968

US Classification:

525482

Abstract:

The products resulting from contacting an organic phosphine or arsine with an inorganic acid having a weak nucleophilic anion provide for relatively stable compositions when admixed with a compound containing an average of more than one vicinal epoxide group per molecule and which optionally contains a compound containing an average of more than one phenolic hydroxyl group per molecule.

US Patent:

55039375, Apr 2, 1996

Filed:

Feb 7, 1994

Appl. No.:

8/192465

Inventors:

James L. Bertram - Lake Jackson TX
Louis L. Walker - Clute TX
John W. Muskopf - Lake Jackson TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08G 5962
C08G 5914

US Classification:

428414

Abstract:

A curable composition which comprises: (1) a compound which contains on average more than 1 epoxy group per molecule; (2) a compound which contains on average more than 1 phenolic hydroxyl group per molecule; and (3) a catalytic amount of a catalyst compound which contains: (a) a cation containing at least one heterocyclic nitrogen-containing ring, and (b) an anion which is a conjugate base of fluoroarsenic acid, fluoroantimonic acid, fluorophosphoric acid, chloroarsenic acid, chloroantimonic acid, chlorophosphoric acid, nitric acid, hydrofluoric acid, trifluoroacetic acid, trifluoromethane sulfonic acid, picric acid, fluoboric acid, or an acid represented by the Formula: HBR. sub. 3 R' wherein each R is independently a hydrocarbyl or substituted hydrocarbyl group and R' is a halogen, a hydrocarbonoxy group, a hydrocarbonamino group, or a hydrocarbonphosphino group.

US Patent:

47217421, Jan 26, 1988

Filed:

Nov 7, 1986

Appl. No.:

6/928485

Inventors:

James L. Bertram - Lake Jackson TX
Willie L. Myles - Sweeny TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08G 5958

US Classification:

523417

Abstract:

Curable amide modified epoxy resins are prepared by polymerizing (I) the reaction product of (A) the reaction product of (1) an epoxy resin having an average of more than one 1,2-epoxy group per molecule and an average of from about 0 to about 30 aliphatic hydroxyl groups per molecule such as a diglycidyl ether of bisphenol A and (2) (a) a material having only one primary amine group per molecule such as monoethanolamine and (b) a material having only one secondary amine group per molecule such as diethanolamine wherein (a) and (b) are added sequentially with (a) being added first, or as a mixture with (B) an anhydride of an unsaturated dicarboxylic acid such as maleic anhydride with (II) a polymerizable ethylenically unsaturated monomer or mixture of monomers such as styrene and methacrylic acid. The resultant resin can be employed as is in the preparation of organic solvent borne coatings or it can be neutralized with a base so as to improve its stability in the preparation of aqueous coatings.

US Patent:

44826923, Nov 13, 1984

Filed:

Oct 24, 1983

Appl. No.:

6/544671

Inventors:

James L. Bertram - Lake Jackson TX
William Davis - Lake Jackson TX
Louis L. Walker - Clute TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08G 5902

US Classification:

528 93

Abstract:

Epoxy resin compositions are disclosed which are the reaction products resulting from reacting (A) the reaction product of a cyanuric halide and at least one dihydric or polyhydric phenol with (B) at least one dihydric or polyhydric phenol and (C) at least one epoxy resin having an average of more than one epoxy group per molecule. These epoxy resin compositions are suitable for use as electrical laminates, structural laminates, coatings, castings, electrical encapsulation and the like.

US Patent:

51694735, Dec 8, 1992

Filed:

May 21, 1990

Appl. No.:

7/526488

Inventors:

James L. Bertram - Lake Jackson TX
Louis L. Walker - Clute TX
Charlie Z. Hotz - Walnut Creek CA

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C09J 502

US Classification:

1563074

Abstract:

Products resulting from contacting (1) at least one compound selected from the group consisting of (a) at least one onium compound of the element nitrogen, phosphorus, sulfur or arsenic; (b) at least one amine compound; and (c) a mixture of any two or more of the (a) and (b) components; with (2) either (a) boric acid or (b) a mixture of boric acid and at least one acid having a weak nucleophilic anion are suitable catalysts for reacting vicinal epoxy-containing compounds with aromatic hydroxyl-containing compounds.

US Patent:

46651497, May 12, 1987

Filed:

Nov 8, 1985

Appl. No.:

6/796368

Inventors:

James L. Bertram - Lake Jackson TX
Louis L. Walker - Clute TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C08G 5932

US Classification:

528 96

Abstract:

The thermal stability of epoxy resins prepared by dehydrohalogenating the reaction product of an epihalohydrin with an adduct prepared from a cyanuric halide and a polyhydric aromatic compound is improved by employing as the polyhydric aromatic compound one which is substituted with a hydrocarbyl group, a halogen atom or a nitro group at each ortho position relative to each aromatic hydroxyl group. These epoxy resins are useful in coating and molding compositions and in the preparation of laminates and composites.

US Patent:

41622448, Jul 24, 1979

Filed:

Aug 25, 1978

Appl. No.:

5/937022

Inventors:

James L. Bertram - Lake Jackson TX

Assignee:

The Dow Chemical Company - Midland MI

International Classification:

C09D 358

US Classification:

260 37EP

Abstract:

Weldable coatings containing, an electro-conductive pigment such as zinc, an epoxy resin binder and solvent are improved by employing as the epoxy resin binder, the reaction product of a relatively low molecular weight epoxy resin such as the diglycidyl ether of bisphenol A and an amine compound having two amine hydrogen atoms such as ethanolamine.