Patents by Inventor Pen C. Wang

Pen C. Wang 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: 5406003
    Abstract: A phenolic compound is provided which can be described by the formula ##STR1## in which Ar is a C.sub.6-20 aromatic moiety, L is a cyclohexanenorbornane linking moiety, L' is a divalent cycloaliphatic moiety, and each of m and n is a number within the range of 0 to about 10. Such phenols include the product of the addition reaction of phenol with a cyclohexenenorbornene compound such as 5-(3-cyclohexen-1-yl)bicyclo[2.2.1 ]hept-2-ene.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: April 11, 1995
    Assignee: Shell Oil Company
    Inventors: Pen C. Wang, Donald R. Kelsey
  • Patent number: 5382713
    Abstract: A phenolic compound is provided which can be described by the formula ##STR1## in which Ar is a C.sub.6-20 aromatic moiety, L is a cyclohexanenorbornane linking moiety, L' is a divalent cycloaliphatic moiety, and each of m and n is a number within the range of 0 to about 10. Such phenols include the product of the addition reaction of phenol with a cyclohexenenorbornene compound such as 5-(3-cyclohexen-1-yl)bicyclo[2.2.1]hept-2-ene.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: January 17, 1995
    Assignee: Shell Oil Company
    Inventors: Pen C. Wang, Donald R. Kelsey
  • Patent number: 5164470
    Abstract: Novel polymers containing silicon moieties and moieties of a 1,6-diaza [4.4] spirodilactam are produced by reaction of an aminohydrocarbyl silyl compound and a spirodilactam precursor selected from ketodicarboxylic acid compound or a 1,6-dioxa [4.4] spirodilactone.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: November 17, 1992
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 5142022
    Abstract: Novel thermosetting resin compositions are disclosed which comprise a 2,7-dioxo-1,6-dioxaspiro[4.4]nona-3,8-diene compound and at least one other reactive, polymerizable monomer which has at least two functional group substituents which contain active hydrogen atoms or multiple bonds between adjacent atoms. The thermosetting resins, upon application of heat, give crosslinked, cured products having good properties.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: August 25, 1992
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 5128436
    Abstract: Novel cyclic oligomers contain moieties of 2-hydroxyl-1,3-propylene alternating with moieties of 1,6-di(oxyphenyl) 1,6-diaza [4.4] spirodilactam and, optionally, di(oxyphenyl) compound. The oligomers are thermoplastic resin of the phenoxy resin type.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: July 7, 1992
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 5082923
    Abstract: Cyanatoaryl-substituted 1,6-diaza[4.4]spirodilactam having a cyanatoaryl-containing substituent on each spiro ring nitrogen atom self-cure upon application of heat to produce cured, crosslinked thermoset resins of high glass transition temperature.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: January 21, 1992
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 5059674
    Abstract: Arylcyclobutenealkyl ethers of hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactams having a hydroxyaryl substituent on each spiro ring nitrogen atom are self-curing upon application of heat to produce cured products of relatively high glass transition temperature having good physical properties.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: October 22, 1991
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 5049640
    Abstract: Polymeric polyetherketones characterized by relatively high glass transition temperatures comprise moieties derived from a halo-substituted aryl ketone alternating with moieties derived from a hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactam having the hydroxyaryl substituents on the spiro ring nitrogen atoms and, optionally, moieties derived from a di(hydroxyphenyl) compound.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: September 17, 1991
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 5034504
    Abstract: Novel polyamide polymers incorporating moieties of a [4.4] spirodilactam with spiro ring nitrogens in the 1- and 6- spiro ring positions and moieties of a primary diamine are produced by reaction of the primary diamine and a spirodilactam precursor selected from 4-oxoheptanediotic acid compounds or [4.4] spirodilactones having spiro ring oxygen atoms in the 1- and 6- spiro ring positions.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: July 23, 1991
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 5013805
    Abstract: A novel class of cured products is derived from unsaturated polycylic ethers or esters comprising unsaturated ether or ester derivatives of a hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactum having a hydroxyaryl substitute attached to each spiro ring nitrogen atom.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: May 7, 1991
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4981976
    Abstract: Cyanatoaryl-substituted 1,6-diaza[4.4]spirodilactam having a cyanatoaryl-containing substituent on each spiro ring nitrogen atom self-cure upon application of heat to produce cured, crosslinked thermoset resins of high glass transition temperature.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: January 1, 1991
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4968810
    Abstract: Arylcyclobutenealkyl ether of hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactams having a hydroxyaryl substituent on each spiro ring nitrogen atom are self-curing upon application of heat to produce cured products of relatively high glass transition temperature having good physical properties.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: November 6, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4968811
    Abstract: Novel 1,6-diaza[4.4]spirodilactams having a hydroxyaryl substituent on each spiro ring nitrogen atom and at least one alkenyl group located on an aromatic ring carbon atom which is ortho to the hydroxy of the hydroxyaryl substituents are produced by Claisen Rearrangement of an alkenyl ether of the hydroxyaryl-substituted spirodilactam having one fewer ortho-alkenyl substituent.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: November 6, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4968770
    Abstract: Novel polyamide polymers incorporating moieties of a [4.4] spirodilactam with spiro ring nitrogens in the 1- and 6- spiro ring positions and moieties of a primary diamine are produced by reaction of the primary diamine and a spirodilactam precursor selected from 4-oxoheptanedioic acid compounds or [4.4] spirodilactones having spiro ring oxygen atoms in the 1- and 6- spiro ring positions.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: November 6, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4940801
    Abstract: Novel unsaturated derivatives of 1,6-diaza [4,4] spirodilactams having a monovalent unsaturated substituent on each spiro ring nitrogen atom are produced by reaction of an unsaturated amine and a spirodilactam precursor selected from a 4-oxoheptanedioic acid compound or a 1,6-dioxo [4,4] spirodilactone.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: July 10, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4939270
    Abstract: Primary diamines, employed in stoichiometric excess, react with a spirodilactam precursor selected from 4-oxoheptandioic acid compounds or 1,6-dioxaspiro[4.4]nonane-2,7-diones, to produce 1,6-diaza[4.4]spirodilactams having an amino-containing substituent on each spiro ring nitrogen atom. The spirodilactams are useful in the production of thermoplastic polyamides by reaction with diacids and as curing agents for epoxy resins in the production of thermoset resins.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: July 3, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4939251
    Abstract: Novel 1-azaspiro[4.4] lactams are produced by reaction of at least one hydroxy-containing primary amino compound with a 4-ketodiacid compound or a 1,6-dioxaspiro[4.4]lactone. Molar excesses of amion compound result in production of spirodilactams, while limited molar quantities of amino compound results in production of a spirolactam-lactone which reacts further with hydroxy-containing primary amino compound or with hydroxy-free primary amino compound to produce a spirodilactam. Certain of the spirolactams are useful as precursors for glycidyloxy derivatives which react with epoxy curing agents to form insoluble thermoset resins while others are useful as curing agents and yet others are converted to glycidyloxy derivatives useful as reactive diluents in epoxy resin applications.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: July 3, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4935489
    Abstract: The invention provides a novel class of thermoplastic polycyclic sulfone polymers incorporating within the polymer chain two different types of cyclic structures. More particularly, it provides polyspirodilactamsulfones wherein moieties of an aryl sulfone alternate with moieties of an oxyaryl-substituted 1,6-diaza[4.4] spirodilactam and, optionally, moieties of a di(oxyphenyl) compound.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: June 19, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4933423
    Abstract: Novel thermosetting resin compositions comprise a mixture of the epoxyalkylether of a 1,6-diaza[4.4]spirodilactam having a hydroxyaryl substituent on each of the spiro ring nitrogen atoms, and at least one diamine compound. The cured compositions obtained by heating the resin compositions to an elevated temperature have relatively high glass transition temperatures and good physical properties.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: June 12, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang
  • Patent number: 4927906
    Abstract: Novel polymers containing amide and imide moieties are produced by reaction of a spirodilactam precursor selected from 4-oxoheptanedioic acid compounds or 1,6-dioxa [4,4] spirodilactones, a primary diamine and an aromatic tricarboxylic acid compound. The polymer products have relatively high glass transition temperatures.
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: May 22, 1990
    Assignee: Shell Oil Company
    Inventor: Pen C. Wang