Richard A Durst

US Patent:

45032041, Mar 5, 1985

Filed:

Feb 15, 1983

Appl. No.:

6/466399

Inventors:

Robert E. Bingham - Cuyahoga Falls OH
Richard R. Durst - Stow OH
Hubert J. Fabris - Akron OH
Ivan G. Hargis - Tallmadge OH
Russell A. Livigni - Akron OH
Sundar L. Aggarwal - Akron OH

Assignee:

The General Tire & Rubber Company - Akron OH

International Classification:

C08G 1200

US Classification:

526187

Abstract:

A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.

US Patent:

43025684, Nov 24, 1981

Filed:

Feb 25, 1980

Appl. No.:

6/124373

Inventors:

Robert E. Bingham - Cuyahoga Falls OH
Richard R. Durst - Stow OH
Hubert J. Fabris - Akron OH
Ivan G. Hargis - Tallmadge OH
Russell A. Livigni - Akron OH
Sundar L. Aggarwal - Akron OH

Assignee:

The General Tire & Rubber Co. - Akron OH

International Classification:

C08F 452

US Classification:

526187

Abstract:

A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.

US Patent:

43551564, Oct 19, 1982

Filed:

Sep 14, 1981

Appl. No.:

6/301691

Inventors:

Robert E. Bingham - Cuyahoga Falls OH
Richard R. Durst - Stow OH
Hubert J. Fabris - Akron OH
Ivan G. Hargis - Tallmadge OH
Russell A. Livigni - Akron OH
Sundar L. Aggarwal - Akron OH

Assignee:

The General Tire & Rubber Company - Akron OH

International Classification:

C08D 132
C08F 174
C08F 1908

US Classification:

528413

Abstract:

A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.

US Patent:

42972400, Oct 27, 1981

Filed:

Aug 15, 1980

Appl. No.:

6/178248

Inventors:

Robert E. Bingham - Cuyahoga Falls OH
Richard R. Durst - Stow OH
Hubert J. Fabris - Akron OH
Ivan G. Hargis - Tallmadge OH
Russell A. Livigni - Akron OH
Sundar L. Aggarwal - Akron OH

Assignee:

The General Tire & Rubber Company - Akron OH

International Classification:

C08F 410

US Classification:

252431R

Abstract:

A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can product polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.

US Patent:

43072186, Dec 22, 1981

Filed:

Aug 15, 1980

Appl. No.:

6/178272

Inventors:

Robert E. Bingham - Cuyahoga Falls OH
Richard R. Durst - Stow OH
Hubert J. Fabris - Akron OH
Ivan G. Hargis - Tallmadge OH
Russell A. Livigni - Akron OH
Sundar L. Aggarwal - Akron OH

Assignee:

The General Tire & Rubber Company - Akron OH

International Classification:

C08F23600

US Classification:

526340

Abstract:

A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.