Patents by Inventor Walter R. Wszolek

Walter R. Wszolek 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: 4510097
    Abstract: This invention relates to novel hindered cycloaliphatic monoisocyanates of the general formula: ##STR1## wherein R.sub.1 -R.sub.7 are members of the group consisting of H, alkyl, cycloalkyl, aryl, alkaryl, aralkyl or mixtures thereof wherein the alkyl groups contain 1-18 carbon atoms, the cycloalkyl groups contain 4-8 carbon atoms and the aryl groups contain 6-14 carbon atoms with the proviso that where R.sub.3 is a group member other than H, R.sub.1, R.sub.2, R.sub.4 and R.sub.5 can be H and with the further proviso that where R.sub.3 is H at least two of R.sub.1, R.sub.2, R.sub.4 and R.sub.5 are group members other than H and x is 1 to 7. Other novel dihindered intermediate compositions include aliphatic monoamines.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: April 9, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Clifton L. Kehr, Walter R. Wszolek, Nelson S. Marans
  • Patent number: 4434215
    Abstract: A composition suitable for use as a battery separator comprising a substantially homogeneous mixture of a copolymer of ethylene and acrylic acid having from 10 to 23 mole percent acrylic acid therein and a melt index of from about 0.1 to 5 in combination with a copolymer of ethylene and acrylic acid having at least 25 mole percent acrylic acid therein and having a melt index of at least about 10. The present invention is further directed to a process of forming a sheet product from the subject composition and the use of the formed product as a battery separator.
    Type: Grant
    Filed: September 2, 1982
    Date of Patent: February 28, 1984
    Assignee: W. R. Grace & Co.
    Inventors: Walter R. Wszolek, Joseph T. Lundquist, Jr.
  • Patent number: 4130213
    Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic anhydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: December 19, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Walter R. Wszolek
  • Patent number: 4128185
    Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic anhydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: December 5, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Walter R. Wszolek
  • Patent number: 4077935
    Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic anhydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.
    Type: Grant
    Filed: January 5, 1977
    Date of Patent: March 7, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Walter R. Wszolek
  • Patent number: 4068776
    Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic ahydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: January 17, 1978
    Assignee: W. R. Grace & Co.
    Inventor: Walter R. Wszolek
  • Patent number: 4020966
    Abstract: A plastisol composition containing as the resin component a copolymer of a normal .alpha.-olefin and maleic anhydride (1:1 mole ratio) having the structure ##STR1## WHEREIN B is a member of the group consisting of ##STR2## and the hydrolysis product thereof, ##STR3## R is H or C.sub.x H.sub.2x.sub.+1, x is 1 to 16 and n is 2-300, and a plasticizer for said resin component. The plastisol when fluxed can be used as a closure gasket for containers.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: May 3, 1977
    Assignee: W. R. Grace & Co.
    Inventor: Walter R. Wszolek
  • Patent number: 3951691
    Abstract: This invention relates to a process for imparting permanent wettability to a battery separator comprising a non-woven mat of polyolefin fiber by impregnating said battery separator with an .alpha.-olefin/.alpha.,.beta.-unsaturated acid or anhydride copolymer or terpolymer dissolved in water by reaction with a base and thereafter causing the copolymer or terpolymer to revert to a water-insoluble substantially free acid form by either heating the impregnated battery separator to drive off the base or exposing the impregnated separator to acid. Water-insoluble herein refers to aqueous media having a pH from acidic to essentially neutral.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: April 20, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Walter R. Wszolek, Joseph A. Cogliano
  • Patent number: 3931287
    Abstract: The invention disclosed is for a new and novel class of liquid polyene compositions formed of a molecule containing at least two unsaturated carbon-to-carbon bonds disposed at terminal positions on a main chain backbone of the molecule. The molecule includes unsaturated carbon-to-carbon bonds connected by a divalent chemically compatible derivative to a stable, organic, polyvalent, and polymeric member free of reactive carbon-to-carbon unsaturation and free of highly water-sensitive members. The new class of liquid polyene compositions which have a molecular weight in the range 300 to 20,000, and a viscosity in the range from essentially 0 to 20 million centipoises at 70.degree.C., may usefully form a component of a system which upon curing in the presence of a free radical generator and a polythiol, forms odorless, solid, elastomeric products. The cured products may be used as sealants, coatings, adhesives and molded articles.
    Type: Grant
    Filed: August 22, 1973
    Date of Patent: January 6, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Clifton L. Kehr, Walter R. Wszolek