Patents by Inventor Syed Z. Mahdi

Syed Z. Mahdi 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).

  • Patent number: 10189960
    Abstract: A vulcanized rubber is formed by a method comprising blending a halogenated unsaturated polymer into a rubber comprised of cis 1-4 polyisoprene to form a vulcanizable polymer blend, adding a vulcanization material to the vulcanizable polymer blend, and vulcanizing the vulcanizable polymer blend to form a homogeneous vulcanized rubber. The method may be used to form a vulcanized rubber comprised of polyisoprene uniformly crosslinked with a halogenated unsaturated polymer that is a reaction product of (i) an unsaturated polymer miscible with polyisoprene and having conjugated dienes that undergo a Diels Alder reaction and (ii) a polyhalogenated cyclopentadiene.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 29, 2019
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Roger A. Cassell, Syed Z. Mahdi, Parvinder S. Walia
  • Patent number: 9920199
    Abstract: An improved silane modified polymer useful in adhesive compositions is made from a silane precursor material made by a process comprising reacting an organic compound having a backbone that is terminated by an amino group having at least one active amino hydrogen and a hydrolysable silane, wherein the backbone is comprised of at least one secondary amino group having one active amino hydrogen and a Michael addition acceptor compound, wherein the Michael addition compound fails to have a group reactive with an isocyanate group to form the silane precursor compound. The silane precursor compound is reacted with an isocyanate terminated polyurethane prepolymer to form a silane modified prepolymer. The silane modified prepolymer may then be cured with moisture and may be employed in an adhesive composition containing other components such as a plasticizer, catalyst and filler.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: March 20, 2018
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Syed Z. Mahdi, Yiyong He
  • Publication number: 20170283564
    Abstract: A vulcanized rubber is formed by a method comprising blending a halogenated unsaturated polymer into a rubber comprised of cis 1-4 polyisoprene to form a vulcanizable polymer blend, adding a vulcanization material to the vulcanizable polymer blend, and vulcanizing the vulcanizable polymer blend to form a homogeneous vulcanized rubber. The method may be used to form a vulcanized rubber comprised of polyisoprene uniformly crosslinked with a halogenated unsaturated polymer that is a reaction product of (i) an unsaturated polymer miscible with polyisoprene and having conjugated dienes that undergo a Diels Alder reaction and (ii) a polyhalogenated cyclopentadiene.
    Type: Application
    Filed: December 10, 2015
    Publication date: October 5, 2017
    Inventors: Roger A. Cassell, Syed Z. Mahdi, Parvinder S. Walia
  • Patent number: 9765247
    Abstract: The invention is an adhesive composition comprising a silyl terminated prepolymer having a number molecular weight average (Mn) of about 8,000 to about 80,000 g/mole, a filler, and a silanol condensation reaction catalyst. The silyl terminated prepolymer is comprised of a polymeric backbone of alkylene oxide and at least three urethane groups and at least two terminal groups comprised of a silicon atom having at least two alkoxy silane groups, wherein each silicon atom in the terminal groups is separated from the urethane groups in the polymeric backbone by an amount of alkylene oxide that has a molecular weight of 200 to 15,000 g/mole.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: September 19, 2017
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Syed Z. Mahdi, Susan P. Sevidal
  • Patent number: 9708516
    Abstract: Two component polyurethane adhesives contain (a) at least one alkyl-substituted 4,4?-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted in at least one position ortho to the amino group, (b) at least one 2,4?-di(aminocyclohexyl)alkane or 2,2?-di(aminocyclohexyl)alkane, (c) a mixture of (ii) at least one alkyl-substituted 4,4?-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted and (ii) at least one 2,4?-di(aminocyclohexyl)alkane and/or 2,2?-di(aminocyclohexyl)alkane, or (d) a mixture of 40 to 99.9% by weight (a), (b) or (c) with 0.1 to 60% by weight of at least one unsubstituted 4,4?-di(aminocyclohexyl)alkane, The adhesives also contain one or more polyols, in which at least 50% of the hydroxyl groups are secondary hydroxyls. These adhesive provide a useful combination of long open time and excellent sag resistance.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 18, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: Bradley D. Suerer, Syed Z. Mahdi, Gary L. Jialanella, Gary A. Hunter
  • Publication number: 20160060382
    Abstract: An improved silane modified polymer useful in adhesive compositions is made from a silane precursor material made by a process comprising reacting an organic compound having a backbone that is terminated by an amino group having at least one active amino hydrogen and a hydrolysable silane, wherein the backbone is comprised of at least one secondary amino group having one active amino hydrogen and a Michael addition acceptor compound, wherein the Michael addition compound fails to have a group reactive with an isocyanate group to form the silane precursor compound. The silane precursor compound is reacted with an isocyanate terminated polyurethane prepolymer to form a silane modified prepolymer. The silane modified prepolymer may then be cured with moisture and may be employed in an adhesive composition containing other components such as a plasticizer, catalyst and filler.
    Type: Application
    Filed: August 26, 2015
    Publication date: March 3, 2016
    Inventors: Syed Z. Mahdi, Yiyong He
  • Publication number: 20150368529
    Abstract: Two component polyurethane adhesives contain (a) at least one alkyl-substituted 4,4?-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted in at least one position ortho to the amino group, (b) at least one 2,4?-di(amino cyclohexyl)alkane or 2,2?-di(aminocyclohexyl)alkane, (c) a mixture of (ii) at least one alkyl-substituted 4,4?-di(aminocyclohexyl)alkane wherein each cyclohexyl group is alkyl-substituted and (ii) at least one 2,4?-di(aminocyclohexyl)alkane and/or 2,2?-di(amino cyclohexyl)alkane, or (d) a mixture of 40 to 99.9% by weight (a), (b) or (c) with 0.1 to 60% by weight of at least one unsubstituted 4,4?-di(aminocyclohexyl)alkane, The adhesives also contain one or more polyols, in which at least 50% of the hydroxyl groups are secondary hydroxyls. These adhesive provide a useful combination of long open time and excellent sag resistance.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 24, 2015
    Inventors: Bradley D. Suerer, Syed Z. Mahdi, Gary L. Jialanella, Gary A. Hunter
  • Patent number: 9193880
    Abstract: An additive (and methods for a coating composition that includes at least one an agent for improving the performance of the coating composition, selected from a Michael addition product of siloxane further containing one or more active hydrogen containing functional moieties with two or more acrylate groups; a high molecular weight adduct having multiple alkoxysilane moieties; a compound including at least one terminal unsaturation and multiple alkoxysilyl groups; an organometallic compound that includes an element selected from silicon, titanium, zirconium, aluminum, or any combination thereof.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: November 24, 2015
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Dominic J. Allam, Kiran K. Baikerikar, Syed Z. Mahdi
  • Patent number: 9051499
    Abstract: A two-part polyurethane adhesive system includes a resin component A and a curative B. The resin component A includes a monomeric polyisocyanate and a prepolymer. The curative B includes a of ether polyol having a molecular weight of from 3000 to 20,000 and another polyol having 4-8 hydroxyl groups and a molecular weight of from 200 to 1000. The system includes a tin (IV) catalyst, which is contained in the resin component, and a blocked aza-type catalyst, which is contained in the curative. The system has excellent shelf stability, gives an excellent open time at ambient temperatures, and cures rapidly when heated to 65° C. or higher.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: June 9, 2015
    Assignee: Dow Global Technologie LLC
    Inventors: Syed Z. Mahdi, Yee Y. Wang, Arthur F. Cawley
  • Patent number: 9032692
    Abstract: Embodiments of the invention include insulated units and methods of producing the insulating units. The insulating units include a first surface, a structural seal disposed on at least portions of the first surface, and a second surface disposed on the structural seal. The structural seal includes the reaction product of at least one first isocyanate, at least one isocyanate reactive side, and at least one adhesion promoter including a reaction product of at least one secondary aminoalkoxy silane and at least one second isocyanate.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: May 19, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Bindushree Radhakrishnan, Laura A. Grier, Syed Z. Mahdi
  • Publication number: 20150068661
    Abstract: The invention is an adhesive composition comprising a silyl terminated prepolymer having a number molecular weight average (Mn) of about 8,000 to about 80,000 g/mole, a filler, and a silanol condensation reaction catalyst. The silyl terminated prepolymer is comprised of a polymeric backbone of alkylene oxide and at least three urethane groups and at least two terminal groups comprised of a silicon atom having at least two alkoxy silane groups, wherein each silicon atom in the terminal groups is separated from the urethane groups in the polymeric backbone by an amount of alkylene oxide that has a molecular weight of 200 to 15,000 g/mole.
    Type: Application
    Filed: August 25, 2014
    Publication date: March 12, 2015
    Inventors: Syed Z. Mahdi, Susan P. Sevidal
  • Publication number: 20130255880
    Abstract: A two-part polyurethane adhesive system includes a resin component A and a curative B. The resin component A includes a monomeric polyisocyanate and a prepolymer. The curative B includes a of ether polyol having a molecular weight of from 3000 to 20,000 and another polyol having 4-8 hydroxyl groups and a molecular weight of from 200 to 1000. The system includes a tin (IV) catalyst, which is contained in the resin component, and a blocked aza-type catalyst, which is contained in the curative. The system has excellent shelf stability, gives an excellent open time at ambient temperatures, and cures rapidly when heated to 65° C. or higher.
    Type: Application
    Filed: November 17, 2011
    Publication date: October 3, 2013
    Inventors: Syed Z. Mahdi, Yee Y. Wang, Arthur F. Cawley
  • Publication number: 20130216840
    Abstract: Embodiments of the invention include insulated units and methods of producing the insulating units. The insulating units include a first surface, a structural seal disposed on at least portions of the first surface, and a second surface disposed on the structural seal. The structural seal includes the reaction product of at least one first isocyanate, at least one isocyanate reactive side, and at least one adhesion promoter including a reaction product of at least one secondary aminoalkoxy silane and at least one second isocyanate.
    Type: Application
    Filed: November 10, 2011
    Publication date: August 22, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Bindushree Radhakrishnan, Laura A. Grier, Syed Z. Mahdi
  • Publication number: 20130029074
    Abstract: The present invention relates to methods for attaching a plastic component to another component where the plastic component is bonded to the other component with an adhesive in the absence of a primer on the plastic component and the adhesive is substantially solvent free. In one embodiment, a coated transparent or translucent polycarbonate substrate is connected to a frame with a polyurethane adhesive containing silicon in the absence of a primer on the substrate; or with a substantially solvent free adhesive. The inventions also related to bonded articles made according to the disclosed methods.
    Type: Application
    Filed: January 18, 2012
    Publication date: January 31, 2013
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Syed Z. Mahdi, Marcy N. Burris, Michelle M. Henderson
  • Patent number: 8273801
    Abstract: The invention is a composition comprising: a) one or more film forming resins having at least one functional group capable of polymerization; b) one or more reactive diluents capable of reacting with the film forming resin; c) one or more silicon, titanium, zirconium, aluminum or metal containing compounds capable of promoting adhesion of the composition to glass; d) one or more fillers capable of imparting abrasion resistance to the composition when cured; and e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety. The composition of the invention is useful as a frit on the window of a vehicle.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: September 25, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Kiran Baikerikar, Syed Z. Mahdi
  • Patent number: 8147974
    Abstract: A composition comprising: a)one or more film forming resins having at least one functional group capable of polymerization; b) one or more adhesion promoters comprising compounds containing one or more unsaturated groups capable of free radical polymerization and one or more trialkoxy silane groups; c) one or more fillers capable of imparting abrasion resistance to the composition; d) one or more compounds which is reactive with the film forming resin which also contains an acidic moiety; and e) one or more compounds comprising a siloxane backbone and one or more active hydrogen groups capable of reacting with the functional groups on a glass bonding adhesive: one or more second adhesion promoters comprising one or more silicon, titanium, zirconium, aluminum, or metal containing compounds; organic materials having reactive groups reactive with reactive groups on the surface of substrates or adhesives; or mixtures thereof.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: April 3, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Kiran Baikerikar, Syed Z. Mahdi, Ben W. Schaefer
  • Publication number: 20120046375
    Abstract: The invention is a composition comprising: a) one or more film forming resins having at least one functional group capable of polymerization; b) one or more reactive diluents capable of reacting with the film forming resin; c) one or more silicon, titanium, zirconium, aluminum or metal containing compounds capable of promoting adhesion of the composition to glass; d) one or more fillers capable of imparting abrasion resistance to the composition when cured; and e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety. The composition of the invention is useful as a frit on the window of a vehicle.
    Type: Application
    Filed: November 2, 2011
    Publication date: February 23, 2012
    Applicant: Dow Global Technologies LLC
    Inventors: Kiran Baikerikar, Syed Z. Mahdi
  • Patent number: 8080299
    Abstract: The invention is a composition comprising: a) one or more film forming resins having at least one functional group capable of polymerization; b) one or more reactive diluents capable of reacting with the film forming resin; c) one or more silicon, titanium, zirconium, aluminum or metal containing compounds capable of promoting adhesion of the composition to glass; d) one or more fillers capable of imparting abrasion resistance to the composition when cured; and e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety. The composition of the invention is useful as a frit on the window of a vehicle.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: December 20, 2011
    Assignee: Dow Global Technologies LLC
    Inventors: Kiran Baikerikar, Syed Z. Mahdi
  • Patent number: 7955696
    Abstract: The present invention is directed to a conductive article and method of making the same that includes a substrate; a conductive composite including a conductive material in a matrix that includes one or more film forming resins having at least one functional group capable of polymerization; one or more adhesion promoters; and one or more compounds, which are reactive with the film forming resin and which also contain at least one acidic moiety.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: June 7, 2011
    Assignee: Dow Global Technologies LLC
    Inventors: Kiran Baikerikar, Syed Z. Mahdi, Daniel L. Dermody, Didem Oner-Deliormanh
  • Publication number: 20100316828
    Abstract: The invention is a composition comprising: a) one or more film forming resins having at least one functional group capable of polymerization; b) one or more reactive diluents capable of reacting with the film forming resin; c) one or more silicon, titanium, zirconium, aluminum or metal containing compounds capable of promoting adhesion of the composition to glass; d) one or more fillers capable of imparting abrasion resistance to the composition when cured; and e) one or more compounds which is reactive with the film forming resin which also contains at least one acidic moiety. The composition of the invention is useful as a frit on the window of a vehicle.
    Type: Application
    Filed: August 20, 2010
    Publication date: December 16, 2010
    Inventors: Kiran Baikerikar, Syed Z. Mahdi