Sandra Jay Walters

US Patent:

6476109, Nov 5, 2002

Filed:

Feb 25, 2000

Appl. No.:

09/513644

Inventors:

Lawson Gibson Wideman - Hudson OH
Paul Harry Sandstrom - Tallmadge OH
Sandra Jean Walters - Stow OH

Assignee:

The Goodyear Tire Rubber Company - Akron OH

International Classification:

C08K 517

US Classification:

524255

Abstract:

This invention relates to rubber compositions comprised of cis-1,4-polyisoprene and a 4,4â-(para or meta-phenylenediisopropylidine) dianiline and to articles of manufacture having at least one component comprised thereof, including tires. The 4,4â-(phenylenediisopropylidine) dianiline acid has been observed to enhance green strength of such rubber composition.

US Patent:

44004885, Aug 23, 1983

Filed:

Apr 28, 1982

Appl. No.:

6/372856

Inventors:

Joginder Lal - Akron OH
Sandra J. Walters - Stow OH

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

C08L 1700
B29H 1900

US Classification:

525211

Abstract:

The green strength of compositions containing elastomers and/or up to 100 percent of reclaimed rubber is improved by the addition of crystalline or semi-crystalline butene polymers selected from the group consisting of polybutene and interpolymers made from 1-butene with at least one monomer selected from the group consisting of alpha-olefins, non-conjugated dienes, and non-conjugated polyenes. Although reclaimed rubbers are utilized, an unexpected increase in green strength of an unvulcanized blend is obtained. The reclaimed rubbers utilized in the blend may be those which have been devulcanized by mechanical energy, heat, and/or chemical agents. Additionally and preferably, the rubbers may be reclaimed through the use of microwave energy. Additionally, the unvulcanized properties of compositions containing 100 percent of scrap rubber which has been reclaimed using microwave energy are significantly improved by adding crystalline or semi-crystalline alpha-olefin polymers, such as polyethylene or polypropylene. Unexpected improvements in solvent resistance and molding properties of the uncured blends are also achieved.

US Patent:

42435617, Jan 6, 1981

Filed:

May 24, 1979

Appl. No.:

6/042275

Inventors:

Joginder Lal - Akron OH
Sandra J. Walters - Stow OH

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

C08L 700
C08L 900

US Classification:

260 4R

Abstract:

The green strength of elastomers is improved by the addition of semi-crystalline butene polymers selected from the class consisting of polybutene and interpolymers made from 1-butene monomer and at least one monomer selected from the class consisting of alpha-olefins, non-conjugated dienes, and non-conjugated polyenes. The blend composition may also include reclaimed rubber. The semi-crystalline butene polymer is mixed with a desired elastomer such as natural or synthetic cis-1,4-polyisoprene, or a synthetic elastomer made from monomers selected from the class consisting of conjugated dienes having from 4 to 10 carbon atoms, interpolymers of said dienes among themselves or with vinyl substituted aromatic hydrocarbon compounds having from 8 to 12 carbon atoms, or polyalkenylenes. The mixing or blending of the butene polymer and the elastomer may be through conventional methods such as cement mixing or mastication.

US Patent:

43416675, Jul 27, 1982

Filed:

Jun 23, 1980

Appl. No.:

6/161830

Inventors:

Joginder Lal - Akron OH
Sandra J. Walters - Stow OH

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

B29H 1900
C08L 1700

US Classification:

525211

Abstract:

The green strength of compositions containing elastomers and/or up to 100 percent of reclaimed rubber is improved by the addition of crystalline or semi-crystalline butene polymers selected from the group consisting of polybutene and interpolymers made from 1-butene with at least one monomer selected from the group consisting of alpha-olefins, non-conjugated dienes, and non-conjugated polyenes. Although reclaimed rubbers are utilized, an unexpected increase in green strength of an unvulcanized blend is obtained. The reclaimed rubbers utilized in the blend may be those which have been devulcanized by mechanical energy, heat, and/or chemical agents. Additionally and preferably, the rubbers may be reclaimed through the use of microwave energy. Additionally, the unvulcanized properties of compositions containing 100 percent of scrap rubber which has been reclaimed using microwave energy are significantly improved by adding crystalline or semi-crystalline alpha-olefin polymers, such as polyethylene or polypropylene. Unexpected improvements in solvent resistance and molding properties of the uncured blends are also achieved.

US Patent:

42724368, Jun 9, 1981

Filed:

May 24, 1979

Appl. No.:

6/042190

Inventors:

Joginder Lal - Akron OH
Sandra J. Walters - Stow OH

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

C08J 1104
C08L 4500

US Classification:

260 23

Abstract:

The green strength of elastomers is improved by the addition of semi-crystalline butene polymers selected from the class consisting of polybutene and interpolymers made from 1-butene monomer and at least one monomer selected from the class consisting of alpha-olefins, non-conjugated dienes, and non-conjugated polyenes. The semi-crystalline butene polymer is mixed with a desired elastomer such as natural or synthetic cis-1,4-polyisoprene, or a synthetic elastomer made from monomers selected from the class consisting of conjugated dienes having from 4 to 10 carbon atoms, interpolymers of said dienes among themselves or with vinyl substituted aromatic hydrocarbon compounds having from 8 to 12 carbon atoms, or polyalkenylenes. The mixing or blending of the butene polymer and the elastomer may be through conventional methods such as cement mixing or mastication.

US Patent:

41983246, Apr 15, 1980

Filed:

Mar 21, 1977

Appl. No.:

5/779382

Inventors:

Joginder Lal - Akron OH
Sandra J. Walters - Stow OH

Assignee:

The Goodyear Tire & Rubber Company - Akron OH

International Classification:

C08L 900
C08L 700

US Classification:

260 4R

Abstract:

The green strength of elastomers is improved by the addition of semi-crystalline butene polymers selected from the class consisting of polybutene and interpolymers made from 1-butene monomer and at least one monomer selected from the class consisting of alpha-olefins, non-conjugated dienes, and non-conjugated polyenes. The semi-crystalline butene polymer is mixed with a desired elastomer such as natural or synthetic cis-1,4-polyisopropene, or a synthetic elastomer made from monomers selected from the class consisting of conjugated dienes having from 4 to 10 carbon atoms, interpolymers of said dienes among themselves or with vinyl substituted aromatic hydrocarbon compounds having from 8 to 12 carbon atoms, or polyalkenylenes. The mixing or blending of the butene polymer and the elastomer may be through conventional methods such as cement mixing or mastication.