Patents by Inventor Daryl L. Stein

Daryl L. Stein 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).

  • Publication number: 20010023270
    Abstract: A stabilizer composition for polymers is provided comprising bis(2,4-dicumylphenyl) pentaerythritol diphosphite and at least one metal salt of the lactic acid, and optionally one or more additional phosphites and other antioxidants.
    Type: Application
    Filed: April 12, 2001
    Publication date: September 20, 2001
    Inventors: Daryl L. Stein, Marc Nolen
  • Patent number: 6224791
    Abstract: This invention discloses synergistic blends of phosphates and lactones having a base structure of 3-phenylbenzofuran-2-one with or without other additives as stabilizers for polymers, particularly during melt processing as evidenced by changes in melt flow and in some instances, resistance to yellowing.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: May 1, 2001
    Assignee: Dover Chemical Corporation
    Inventors: Don R. Stevenson, Daryl L. Stein
  • Patent number: 5981787
    Abstract: Novel peroxyoxalate compositions of Structure A, ##STR1## and use of the novel monoperoxyoxalates of Structure A as initiators for polymerizing ethylenically unsaturated monomers and for curing of unsaturated polyester resins are disclosed.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: November 9, 1999
    Assignee: Elf Atochem North America, Inc.
    Inventors: Jose Sanchez, Daryl L. Stein
  • Patent number: 5866712
    Abstract: A novel peroxide composition of Structure A, ##STR1## and use of the novel oxalic acid peroxide composition of Structure A as an initiator; a) for curing of unsaturated polyester resins, b) for polymerizing ethylenically unsaturated monomers, c) for crosslinking of polyolefins, d) for curing of elastomers, e) for modifying polyolefins, f) for grafting of vinyl monomers onto polymer backbones and g) for compatibilizing blends of two or more incompatible polymers are disclosed.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: February 2, 1999
    Assignee: ELF Atochem North America, Inc.
    Inventors: Jose Sanchez, Daryl L. Stein
  • Patent number: 5723562
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: March 3, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5710210
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 20, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5710213
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 20, 1998
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5612439
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 18, 1997
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5543553
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 6, 1996
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5536790
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 16, 1996
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5534596
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 9, 1996
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5494988
    Abstract: Novel unsaturated peroxide compositions of Structure A,R--Q--X--R.sub.1 A[Where the R--Q-- grouping contains a polymerizable carbon-carbon double bond, --X-- is a direct bond or a connecting diradical and --R.sub.1 is a peroxide containing radical all as defined in the Summary of the Invention Section.], polymeric-peroxide compositions derived from them and their uses are disclosed.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: February 27, 1996
    Assignee: Elf Atochem North America, Inc.
    Inventors: Jose Sanchez, Leonard H. Palys, Daryl L. Stein, John S. Yormick
  • Patent number: 5489699
    Abstract: Novel unsaturated peroxide compositions of Structure A,R--Q--X--R.sub.1 A[Where the R--Q-- grouping contains a polymerizable carbon-carbon double bond, --X-- is a direct bond or a connecting diradical and --R.sub.1 is a peroxide containing radical all as defined in the Summary of the Invention Section.], polymeric-peroxide compositions derived from them and their uses are disclosed.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: February 6, 1996
    Assignee: Elfatochem North America, Inc.
    Inventors: Jose Sanchez, Leonard H. Palys, Daryl L. Stein, John S. Yormick
  • Patent number: 5475072
    Abstract: Novel unsaturated peroxide compositions of Structure A,R--Q--X--R.sub.1 Apolymeric-peroxide compositions derived from them and their uses are disclosed.
    Type: Grant
    Filed: February 9, 1994
    Date of Patent: December 12, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventors: Jose Sanchez, Leonard H. Palys, Daryl L. Stein, John S. Yormick
  • Patent number: 5466855
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: November 14, 1995
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5319130
    Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention. The compounds of Formula I may be prepared by reacting hydroxy-containing tertiary hydroperoxides with diacid halides, phosgene, dichloroformates, diisocyanates, anhydrides and lactones to form the functionalized peroxides. These reaction products may be further reacted, if desired, with dialcohols, diamines, aminoalcohols, epoxides, epoxy alcohols, epoxy amines, diacid halides, dichloroformates and diisocyanates to form additional functionalized peroxides.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: June 7, 1994
    Assignee: Elf Atochem North America, Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5238978
    Abstract: A masterbatch composition is provided, comprising greater than about 10% to about 70% by weight of organic peroxide homogeneously dispersed in a polycaprolactone carrier. The peroxide masterbatches are safer and easier to store, ship, handle and use than the peroxides from which they are made. The use of the masterbatch compositions to modify a host polymer or resin to which the masterbatch is added is also disclosed.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: August 24, 1993
    Assignee: Elf Atochem North America Inc.
    Inventor: Daryl L. Stein
  • Patent number: 5162405
    Abstract: The present invention comprises novel single-functional and mixtures of multi-functional oligomeric performance additive compounds having one or more components of Structure A R1 ? ? ##STR1## (The definitions of R, Z1, Z2, Z3, A1, A2, A3 and y are given in the Summary Section), their uses and polymeric compounds and compositions containing them which have enhanced oxidative stabilities, enhanced ultraviolet (UV) and light stabilites and/or enhanced flame retardance. An example is the bis sulfonic acid bispotassium salt reaction product from an oligomeric caprolactone diol (TONE.RTM. 260), 2-sulfobenzoic acid anhydride and potassium carbonate, and use of this product, at levels up to about 3.0%, in a general purpose bisphenol A polycarbonate resin, to enhance the fire resistance or flame retardance of the polycarbonate resin.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: November 10, 1992
    Assignee: ELF Atochem North America, Inc.
    Inventors: Ronald E. MacLeay, Jose Sanchez, Daryl L. Stein
  • Patent number: 5013777
    Abstract: The present invention comprises novel single-functional and mixtures of multi-functional oligomeric performance additive compounds having one or more components of Structure A ##STR1## (The definitions of R, Z1, Z2, Z3, A1, A2, A3 and y are given in the Summary Section), their uses and polymeric compounds and compositions containing them which have enhanced oxidative stabilities, enhanced ultraviolet (UV) and light stabilities and/or enhanced flame retardance. An example is the bis sulfonic acid bispotassium salt reaction product from an oligomeric caprolactone diol (TONE.RTM. 260), 2-sulfobenzoic acid anhydride and potassium carbonate, and use of this product, at levels up to about 3.0%, in a general purpose bisphenol A polycarbonate resin, to enhance the fire resistance or flame retardance of the polycarbonate resin.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: May 7, 1991
    Assignee: Atochem North America, Inc.
    Inventors: Ronald E. MacLeay, Jose Sanchez, Daryl L. Stein
  • Patent number: H1600
    Abstract: Phillips' process high density polyethylene resin compositions having improved processing stability are obtained using a combination of stabilizers comprised of a hindered phenol and a phosphite compound having three cyclic phosphite moieties linked via a nitrogen atom. More specifically, the phosphite compound is 2, [[2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]-dioxaphosphepin- 6-yl]oxy]-N,N-bis [2-[[2,4,8,10-tetrakis (1,1-dimethylethyl) dibenzo[d,f][1,3,2]dioxaphosphenpin-6-yl]oxy]-ethyl]ethanamine. With the HDPE compositions stabilized in accordance with the invention, it is possible to eliminate undesirable rapid changes in melt viscosity which can occur when Phillips' process HDPE resins are processed under conditions of high shear.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: October 1, 1996
    Assignee: Quantum Chemical Company
    Inventors: Stephen M. Imfeld, Daryl L. Stein