Patents by Inventor Paul L. Wiggins
Paul L. Wiggins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8536297Abstract: The present invention relates to a coating composition. More particularly the present invention relates to a coating composition comprising an amine curative composition comprising a bis-aromatic secondary diamine, a bis-aromatic primary diamine and optionally a mono-aromatic primary diamine.Type: GrantFiled: December 16, 2010Date of Patent: September 17, 2013Assignee: Albemarle CorporationInventors: Peter J. Schreiber, Samuel L. Lane, Paul L. Wiggins
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Publication number: 20120252971Abstract: The present invention relates to a coating composition. More particularly the present invention relates to a coating composition comprising an amine curative composition comprising a bis-aromatic secondary diamine, a bis-aromatic primary diamine and optionally a mono-aromatic primary diamine.Type: ApplicationFiled: December 16, 2010Publication date: October 4, 2012Applicant: ALBEMARLE CORPORATIONInventors: Peter J. Schreiber, Samuel L. Lane, Paul L. Wiggins
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Patent number: 8212078Abstract: This invention provides aromatic diimines where the diimines have imino groups with at least two carbon atoms, and either are in the form of one benzene ring having two imino groups on the ring, which imino groups are meta or para relative to each other, and in which each position ortho to an imino group bears a hydrocarbyl group, or are in the form of two benzene rings connected by an alkylene bridge and having one imino group on each ring, and in which each position ortho to an imino group bears a hydrocarbyl group.Type: GrantFiled: December 30, 2005Date of Patent: July 3, 2012Assignee: Albemarle CorporationInventors: John Y. Lee, Paul L. Wiggins, Judit Orgad, Mahmood Sabahi, Vernon O. Brandt, David W. Owens
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Patent number: 8143365Abstract: This invention provides articles made by reaction injection molding and spray coatings, and processes for forming such articles and coatings. The coatings and articles are polyureas or polyurea-urethanes. The ingredients used to form the coatings and articles comprise at least (A) an aromatic polyisocyanate and (B) a mixture formed from components comprised of (i) at least one polyol and/or at least one polyetheramine, (ii) an aromatic primary diamine, and (iii) an aliphatic secondary diamine which has about twelve to about forty carbon atoms and in which the having amino hydrocarbyl groups are secondary or tertiary hydrocarbyl groups.Type: GrantFiled: January 9, 2008Date of Patent: March 27, 2012Assignee: Albemarle CorporationInventors: William R. Brown, Paul L. Wiggins, John Y. Lee
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Patent number: 8080626Abstract: This invention provides chain extender compositions. These compositions comprise (i) an aromatic primary diamine, and (ii) a component selected from the group consisting of: (a) an aliphatic secondary diamine; (b) an aliphatic primary diamine; (c) an aliphatic secondary diamine and an aliphatic primary diamine; (d) a diimine; and (e) a combination of any two or more of (a) through (d). When (ii) is (a), (a) has amino hydrocarbyl groups which are secondary or tertiary hydrocarbyl groups; when (ii) is (d), and (d) is an aromatic diimine, each imino hydrocarbylidene group has at least two carbon atoms. Processes for producing polyurethanes, polyureas, and polyurea-urethanes are also provided.Type: GrantFiled: February 16, 2011Date of Patent: December 20, 2011Assignee: Albemarle CorporationInventors: Paul L. Wiggins, John Y. Lee, Judit Orgad
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Patent number: 8076518Abstract: This invention provides chain extender compositions. These compositions comprise (i) an aliphatic secondary diamine, and (ii) a component selected from the group consisting of: (a) a cycloaliphatic primary diamine; (b) an aliphatic secondary diamine; (c) an aliphatic secondary diamine and an aliphatic primary diamine; (d) an aliphatic diimine; and (e) a combination of any two or more of (a) through (d), with the proviso that when (ii) is (a), (i) is a noncyclic aliphatic secondary diamine. Processes for producing polyurethanes, polyureas, and polyurea-urethanes are also provided.Type: GrantFiled: September 25, 2006Date of Patent: December 13, 2011Assignee: Albemarle CorporationInventors: Paul L. Wiggins, John Y. Lee, Judit Orgad, David W. Owens
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Patent number: 7964695Abstract: This invention provides chain extender compositions. These compositions comprise (i) an aromatic primary diamine, and (ii) a component selected from the group consisting of: (a) an aliphatic secondary diamine; (b) an aliphatic primary diamine; (c) an aliphatic secondary diamine and an aliphatic primary diamine; (d) a diimine; and (e) a combination of any two or more of (a) through (d). When (ii) is (a), (a) has amino hydrocarbyl groups which are secondary or tertiary hydrocarbyl groups; when (ii) is (d), and (d) is an aromatic diimine, each imino hydrocarbylidene group has at least two carbon atoms. Processes for producing polyurethanes, polyureas, and polyurea-urethanes are also provided.Type: GrantFiled: September 25, 2006Date of Patent: June 21, 2011Assignee: Albemarle CorporationInventors: John Y. Lee, Paul L. Wiggins, Judit Orgad, Mahmood Sabahi, Vernon O. Brandt
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Publication number: 20110137005Abstract: This invention provides chain extender compositions. These compositions comprise (i) an aromatic primary diamine, and (ii) a component selected from the group consisting of: (a) an aliphatic secondary diamine; (b) an aliphatic primary diamine; (c) an aliphatic secondary diamine and an aliphatic primary diamine; (d) a diimine; and (e) a combination of any two or more of (a) through (d). When (ii) is (a), (a) has amino hydrocarbyl groups which are secondary or tertiary hydrocarbyl groups; when (ii) is (d), and (d) is an aromatic diimine, each imino hydrocarbylidene group has at least two carbon atoms. Processes for producing polyurethanes, polyureas, and polyurea-urethanes are also provided.Type: ApplicationFiled: February 16, 2011Publication date: June 9, 2011Applicant: ALBEMARLE CORPORATIONInventors: John Y. Lee, Paul L. Wiggins, Judit Orgad
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Patent number: 7767858Abstract: This invention provides aromatic diimines which have imino hydrocarbylidene groups with at least two carbon atoms, and aromatic secondary diamines which have amino hydrocarbyl groups with at least two carbon atoms. Both the aromatic diimines and the aromatic secondary diamines either are in the form of one phenyl ring, or are in the form of two phenyl rings connected by an alkylene bridge; each position ortho to an imino group or an amino group bears a hydrocarbyl group. When in the form of one phenyl ring, there are two imino groups on the ring or two amino groups on the ring; the imino groups or amino groups are meta or para relative to each other. When in the form of two phenyl rings connected by an alkylene bridge, there is either one imino group or one amino group on each phenyl ring. Also provided are processes for forming diimines and secondary diamines.Type: GrantFiled: September 14, 2007Date of Patent: August 3, 2010Assignee: Albemarle CorporationInventors: Paul L. Wiggins, Judit Orgad, John Y. Lee, Mahmood Sabahi
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Publication number: 20100160592Abstract: This invention provides articles made by reaction injection molding and spray coatings, and processes for forming such articles and coatings. The coatings and articles are polyureas or polyurea-urethanes. The ingredients used to form the coatings and articles comprise at least (A) an aromatic polyisocyanate and (B) a mixture formed from components comprised of (i) at least one polyol and/or at least one polyetheramine, (ii) an aromatic primary diamine, and (iii) an aliphatic secondary diamine which has about twelve to about forty carbon atoms and in which the having amino hydrocarbyl groups are secondary or tertiary hydrocarbyl groups.Type: ApplicationFiled: January 9, 2008Publication date: June 24, 2010Applicant: ALBEMARLE CORPORATIONInventors: William R. Brown, Paul L. Wiggins, John Y. Lee
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Publication number: 20080315155Abstract: This invention provides compositions which comprise at least one aromatic secondary diamine having a Gardner color number no more than about 6. The aromatic secondary diamine either is in the form of one benzene ring having two secondary amino groups on the ring, or is in the form of two benzene rings connected by an alkylene bridge and having one secondary amino group on each ring. At least one N,N?-dihydrocarbylhydroxylamine is optionally present in the composition. Processes for producing such compositions are also provided.Type: ApplicationFiled: December 21, 2006Publication date: December 25, 2008Applicant: ALBEMARLE CORPORATIONInventors: John Y. Lee, David W. Owens, Richard D. Glass, Paul L. Wiggins
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Publication number: 20080262187Abstract: This invention provides a blend which comprises (i) at least one aromatic primary diamine, with which has been blended a color-minimizing amount of at least one N,N-dmydrocarbylhydroxylamine, wherein the aromatic primary diamine is in the form of one benzene ring having two primary amino groups on the ling, which amino groups are meta or para relative to each other, and in which each position ortho to a primary amino group bears an alkyl group, and (ii) at least one aromatic secondary diamine having a Gardner color number no more than about 7, wherein said aromatic secondary diamine either is in the form of one benzene ring having two secondary amino groups on the ring, or is in the form of two benzene rings connected by an alkylene bridge and having one secondary amino group on each ring. Optionally, at least one N,N-dihydrocarbylhydroxylamine has been blended with the aromatic secondary diamine.Type: ApplicationFiled: December 21, 2006Publication date: October 23, 2008Applicant: ALBEMARLE CORPORATIONInventors: John Y. Lee, David W. Owens, Paul L. Wiggins, Richard D. Glass, Michael J. Wilhelm, Robert Phillip Slicker
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Publication number: 20080194788Abstract: This invention provides aromatic diimines where the diimines have imino groups with at least two carbon atoms, and either are in the form of one benzene ring having two imino groups on the ring, which imino groups are meta or para relative to each other, and in which each position ortho to an imino group bears a hydrocarbyl group, or are in the form of two benzene rings connected by an alkylene bridge and having one imino group on each ring, and in which each position ortho to an imino group bears a hydrocarbyl group.Type: ApplicationFiled: December 30, 2005Publication date: August 14, 2008Applicant: ALBEMARLE CORPORATIONInventors: John Y. Lee, Paul L. Wiggins, Judit Orgad, Mahmood Sabahi, Vernon O. Brandt, David W. Owens
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Patent number: 7288677Abstract: This invention provides aromatic diimines which have imino hydrocarbylidene groups with at least two carbon atoms, and aromatic secondary diamines which have amino hydrocarbyl groups with at least two carbon atoms. Both the aromatic diimines and the aromatic secondary diamines either are in the form of one phenyl ring, or are in the form of two phenyl rings connected by an alkylene bridge; each position ortho to an imino group or an amino group bears a hydrocarbyl group. When in the form of one phenyl ring, there are two imino groups on the ring or two amino groups on the ring; the imino groups or amino groups are meta or para relative to each other. When in the form of two phenyl rings connected by an alkylene bridge, there is either one imino group or one amino group on each phenyl ring. Also provided are processes for forming diimines and secondary diamines.Type: GrantFiled: March 27, 2006Date of Patent: October 30, 2007Assignee: Albemarle CorporationInventors: John Y. Lee, Paul L. Wiggins, Judit Orgad, Mahmood Sabahi, Vernon O. Brandt
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Patent number: 5874619Abstract: Existing coloration of a liquid ring-polyalkyl-substituted aromatic primary diamine is reduced by blending into such diamine a color-reducing amount of at least one dihydrocarbylhydroxylamine. Preferably, the resultant product is stored in a closed container under an inert atmosphere.Type: GrantFiled: April 7, 1998Date of Patent: February 23, 1999Assignee: Albemarle CorporationInventors: Paul L. Wiggins, Gregory H. Lambeth, William R. Brown
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Patent number: 5840984Abstract: Odor formation during storage of (hydrocarbylthio)aromatic amines due to formation and release of odoriferous sulfur-containing species such as dihydrocarbyldisulfides, is suppressed. To accomplish this, a small amount of N,N-dihydrocarbylhydroxylamine odor-inhibitor (e.g., N,N-diethylhydroxylamine) is blended with the (hydrocarbylthio)aromatic amine. This enables products such as a mixture of 3,5-di(methylthio)-2,4-diaminotoluene and 3,5-di(methylthio)-2,6-diaminotoluene) to be stored for long periods of time with significantly reduced formation and release of odoriferous sulfur-containing species.Type: GrantFiled: June 23, 1997Date of Patent: November 24, 1998Assignee: Albemarle CorporationInventors: Gregory H. Lambeth, Paul L. Wiggins, William R. Brown
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Patent number: 5705039Abstract: Impure 2,6-diisopropylphenol (DIP) is purified by use of a distillation process in which a single distillation column is used. The process comprises: (a) subjecting the impure DIP to a first continuous distillation in the column in an inert environment to distill off lower boiling components and produce first column bottoms enriched in DIP; (b) collecting, cooling and storing the first column bottoms while continuously maintaining them in an inert environment; (c) discontinuing the first continuous distillation; (d) subjecting the first column bottoms to a second continuous distillation in an inert environment in the same column to produce a second overhead distillate composed of purified DIP. The process avoids the formation in the distilling mixtures of dose boiling impurities due to seepage of air through standard pipe flanges and fittings and consequent oxidation reactions which occur under the conditions needed for batch distillations conducted in typical industrial distillation facilities.Type: GrantFiled: October 13, 1995Date of Patent: January 6, 1998Assignee: Albemarle CorporationInventors: Sam F. Clarke, Venkataraman Ramachandran, J. Steve Staton, Paul L. Wiggins
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Patent number: 4775736Abstract: Epoxy resins having acceptable pot lives, degrees of reactivity, and physical properties are obtained by the use of curing agent compositions which comprise about 99.6-90% by weight of a hindered aromatic diamine, such as diethyltoluenediamine, and about 0.4-10% by weight of an accelerator complex of boron trifluoride and a cycloaliphatic diamine, such as isophoronediamine.Type: GrantFiled: August 26, 1987Date of Patent: October 4, 1988Assignee: Ethyl CorporationInventor: Paul L. Wiggins
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Patent number: 4757119Abstract: Novel compositions suitable for use in preparing prepregs comprise an epoxy resin and a poly(hydrocarbylthio)aromatic diamine curing agent, preferably a substituted di(alkylthio)-diaminobenzene wherein the alkylthio groups contain 1-10 carbons.Type: GrantFiled: May 4, 1987Date of Patent: July 12, 1988Assignee: Ethyl CorporationInventors: Paul L. Wiggins, Gordon G. Knapp