JOEL A GRIBENS
Broker in Framingham, MA

4789692, Dec 6, 1988

Aug 12, 1986

6/895760

Nuno M. Rei - Boxford MA
Joel A. Gribens - Framingham MA

Morton Thiokol, Inc. - Chicago IL

C08J 322, C08K 515

523122

For providing biocides in concentrated, immobilized form to an end use resin composition containing a primary thermoplastic resin with which the primary resin is incompatible at high concentrations, solid biocide resin concentrates are provided which immobilize high concentrations of biocide. The solid biocide resin concentrates may contain an alloy of two thermoplastic resins, one of which is substantially identical to the primary resin and one of which enables incorporation and immobilization of high concentrations of biocide in the solid biocide resin concentrates. The solid biocide resin concentrate may contain, in whole or in part, a thermoplastic copolymer having mer units such as are present in the primary resin in addition to dissimilar mer units which enhance compatibility of the biocide with the copolymer. OBPA-containing solid resin concentrates for adding to an end use resin composition in which polyethylene is the primary resin may contain polyethylene plus a second thermoplastic resin in which OBPA is generally compatible and/or a copolymer containing both ethylene and acrylic acid mer units and/or a terpolymer containing ethylene, vinyl acetate and carbon monoxide mer units. Ethylene/acrylic copolymers and ethylene/vinyl acetate/carbon monoxide terpolymers are each useful for forming solid biocide resin concentrates that are miscible with a wide variety of thermoplastic resins.

4041148, Aug 9, 1977

Aug 16, 1976

5/714522

Charles W. Simons - Bedford MA
Gerald J. O'Neill - Arlington MA
Joel A. Gribens - Framingham MA

W. R. Grace & Co. - Cambridge MA

C09K 330

424 45

Certain fluorinated dimethyl ethers have been found to possess the stability, the compatibility and sufficient freedom from deleterious physiological effects to be used as aerosol propellants in cosmetic, hygenic, pharmaceutical and other personal products. These compounds, bis(difluoromethyl) ether and perfluorodimethyl ether, are also free of the chlorine atoms believed responsible for some destruction of ozone in the upper atmosphere.

4852754, Aug 1, 1989

Feb 26, 1988

7/160628

Robert S. Holdsworth - Arlington MA
Shawn E. Brown - N. Cambridge MA
Joel A. Gribens - Framingham MA

W. R. Grace & Co. - Lexington MA

B65D 5300

215347

A hot melt gasket of two superimposed layers. The first layer contains a large amount of tackifier resin to ensure good adhesion to the closure surface. The second layer contains little or no tackifier resin to ensure a good seal between the closure and container. The hot melt gasket is particularly well suited for use on plastic closures, especially polyolefin closures and more especially polypropylene closures.

4988467, Jan 29, 1991

May 30, 1989

7/357930

Robert S. Holdsworth - Arlington MA
Shawn E. Brown - N. Cambridge MA
Joel A. Gribens - Framingham MA

W. R. Grace & Co.-Conn. - Lexington MA

B29C 1302

264 466

A hot melt gasket of two superimposed layers. The first layer contains a large amount of tackifier resin to ensure good adhesion to the closure surface. The second layer contains little or no tackifier resin to ensure a good seal between the closure and container. The hot melt gasket is particularly well suited for use on plastic closures, especially polyolefin closures and more especially polypropylene closures.