James Number Paul

US Patent:

49755196, Dec 4, 1990

Filed:

May 12, 1989

Appl. No.:

7/350781

Inventors:

Nan L. Yang - Staten Island NY
Andrew Auerbach - Livingston NJ
Rose Pesce - College Point NY
Jerry A. Broussard - Summit NJ
James L. Paul - Summit NJ

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

C08G 210

US Classification:

528230

Abstract:

Cationic polymerization of trioxane and a mixture of ester derivatives of. alpha. ,. alpha. - and. alpha. ,. beta. -isomers of glycerol formal yields acetal terpolymers having pendant functional groups (i. e. , ester groups, or hydroxyl groups obtained by hydrolyzing ester groups, pendent from the polymer's backbone). The glycerol formal monomers employed in this invention may include functional groups selected from ester moieties which are protected from, and thus survive, the polymerization process with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block polymers and/or to chemically bind modifiers to the acetal terpolymer backbone, for example.

US Patent:

49067281, Mar 6, 1990

Filed:

Apr 13, 1988

Appl. No.:

7/181237

Inventors:

Andrew Auerbach - Livingston NJ
James L. Paul - Summit NJ
Rose Pesce - College Point NY
Shian S. Wang - New York NY

Assignee:

Hoechst Celanese Corp. - Chatham NJ

International Classification:

C08G 400

US Classification:

528249

Abstract:

The invention concerns a method for producing an acetal copolymer containing backbone bromo-functional groups comprising copolymerizing trioxane with 5,6,-dibromo-1,3-dioxepene. The invention also concerns methods of modifying acetal copolymers containing bromo-functional groups and the copolymers produced by the methods of the invention.

US Patent:

50047981, Apr 2, 1991

Filed:

May 12, 1989

Appl. No.:

7/350799

Inventors:

Jerry A. Broussard - Summit NJ
Andrew B. Auerbach - Livingston NJ
Nan L. Yang - Staten Island NY
James L. Paul - Summit NJ
Yong C. Zheng - New York NY
Chong L. Zhang - Staten Island NY

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

C08G 400

US Classification:

528230

Abstract:

Cationic copolymerization of trioxane and trimethylolpropane (TMP) formal or its ester derivatives yields acetal copolymers having pendant functional groups. The TMP formal or ester derivatives of TMP formal may therefore include functional groups selected from hydroxyl or ester moieties which are protected and thus survive the copolymerization with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block copolymers and/or to chemically bind modifiers to the acetal copolymer backbone, for example.

US Patent:

52063089, Apr 27, 1993

Filed:

Mar 4, 1991

Appl. No.:

7/664436

Inventors:

Andrew B. Auerbach - Livingston NJ
Jerry A. Broussard - Summit NJ
Nan L. Yang - Staten Island NY
James L. Paul - Summit NJ

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

C08F28312
C08F28306
C08G 7704
C08L 7400

US Classification:

525410

Abstract:

Novel oxymethylene graft polymers are obtained by grafting, via Michael addition, an amine functional polymer onto an oxymethylene backbone having pendant acrylate or substituted acrylate ester groups serving as reactive sites for the graft reaction.

US Patent:

47271060, Feb 23, 1988

Filed:

Nov 18, 1986

Appl. No.:

6/932235

Inventors:

James L. Paul - Summit NJ
Andrew B. Auerbach - Livingston NJ

Assignee:

Celanese Engineering Resins, Inc. - Chatham NJ

International Classification:

C08K 513
C08K 509

US Classification:

524380

Abstract:

An oxymethylene polymer composition which exhibits improved thermal stability is provided by utilizing as a stabilizer a major amount of superpolyamide and a minor amount of a transition metal salt.

US Patent:

50433989, Aug 27, 1991

Filed:

May 12, 1989

Appl. No.:

7/350811

Inventors:

Andrew B. Auerbach - Livingston NJ
Jerry A. Broussard - Summit NJ
Nan L. Yang - Staten Island NY
James L. Paul - Summit NJ

Assignee:

Hoechst Celanese Corporation - Somerville NJ

International Classification:

C08L 6102

US Classification:

525399

Abstract:

Novel oxymethylene graft polymers are obtained by grafting a functional compound (i. e. , a polymer or compound having one or two hydroxyl, carboxyl, or amine functional groups) onto an oxymethylene backbone having pendant hydroxyl groups which serve as reactive sites for the graft reaction with diisocyanate coupling agents.

US Patent:

50719521, Dec 10, 1991

Filed:

Apr 13, 1988

Appl. No.:

7/181236

Inventors:

Andrew Auerbach - Livingston NJ
James L. Paul - Summit NJ
Rose Pesce - College Point NY

Assignee:

Hoechst Celanese Corporation - Chatham NJ

International Classification:

C08G 224
C08G 226
C08G 230

US Classification:

528249

Abstract:

Iodoisocyano, iodourea and oxazole modified 1,3 dioxep-5-ene ring monomers are synthesized and used in copolymerization reactions with trioxane to produce acetal copolymers with backbone functional groups. The invention also concerns processes for the production of acetal copolymers containing iodourea and oxazole functional groups from acetal copolymers with backbone double bonds.

US Patent:

50344994, Jul 23, 1991

Filed:

Apr 13, 1988

Appl. No.:

7/181233

Inventors:

Andrew Auerbach - Livingston NJ
James L. Paul - Summit NJ
Yong C. Zheng - New York NY
Shian S. Wang - New York NY

Assignee:

Hoechst Celanese Corp. - Short Hills NJ

International Classification:

C08G 222

US Classification:

528250

Abstract:

Acetal copolymers of trioxane with epoxy functional groups are obtained by copolymerizing trioxane with 5,6-epoxy-1,3-dioxepane. The epoxide group in the polymer chain provides a highly reacting functional group for further modification. Acetal copolymers with backbone epoxide groups exhibit toughness and thermal stability. The backbone epoxide groups can also be aminated in a one step hydrolysis-amination process.