Daniel T Craig

US Patent:

49945378, Feb 19, 1991

Filed:

Sep 18, 1989

Appl. No.:

7/408821

Inventors:

Daniel H. Craig - Hockessin DE
Harry J. Goldy - Woodlyn PA

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

C08F 1824

US Classification:

526273

Abstract:

Acrylate copolymers comprising (a) repeating units derived from at least one acrylic or methacrylic ester and, by weight of the total copolymer, (b) about 0. 1 to 3% of repeating units derived from at least one water-soluble monomer possessing conjugated unsaturation and (c) about 0. 1 to 3% of repeating units derived from at least one water-soluble allyl monomer; aqueous polyacrylate dispersions comprising such polymers; and a process of preparing the same. Optionally, the copolymers contain other free-radical polymerizable monomers.

US Patent:

46597719, Apr 21, 1987

Filed:

Jun 23, 1986

Appl. No.:

6/880932

Inventors:

Daniel H. Craig - Hockessin DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

C08L 3308
C08L 3310
C08L 9304

US Classification:

524700

Abstract:

Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the presence of at least one protective colloid, wherein the improvement comprises conducting the polymerization in the presence of, by weight of the total monomer content, from about 0. 1 to 5% of at least one substantially completely water-soluble monomer having conjugated unsaturation. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.

US Patent:

48682381, Sep 19, 1989

Filed:

Dec 23, 1987

Appl. No.:

7/137833

Inventors:

Daniel H. Craig - Hockessin DE

Assignee:

Aqualon Company - Wilmington DE

International Classification:

C08J 302

US Classification:

524457

Abstract:

Suspension polymerization a vinyl monomer in the presence of from about 0. 01 to 2. 0%, by weight of the total monomer content, of a carboxymethyl hydrophobically modified water-soluble, nonionic cellulose either polymer alone or in combination with an inert electrolyte or inert polyelectrolyte is disclosed. The presence of the carboxymethyl hydrophobically modified water-soluble, nonionic cellulose ether polymer alone or in combination with an inert electrolyte or inert polyelectrolyte provides suspension polymer beads of narrower polydispersity and clarity, and results in minimal latex polymer (emulsion polymer) by-products.

US Patent:

49669397, Oct 30, 1990

Filed:

Jul 11, 1986

Appl. No.:

6/884822

Inventors:

Daniel H. Craig - Hockessin DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

C08L 3700

US Classification:

524811

Abstract:

Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the absence of a protective colloid, wherein the improvement comprises conducting the polymerization in the presence of, by weight of the total monomer content, from about 0. 1 to 2% of at least one substantially completely water-soluble monomer having conjugated unsaturation. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.

US Patent:

46705058, Jun 2, 1987

Filed:

Aug 23, 1985

Appl. No.:

6/768273

Inventors:

Daniel H. Craig - Hockessin DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

C08L 3300
C08L 3304
C08L 3308
C08L 33010

US Classification:

524704

Abstract:

Disclosed are aqueous polyacrylate dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of acrylic esters, methacrylic esters and mixtures thereof in the presence of, by weight of the total monomer content, (a) from about 0. 1 to 5% of at least one water-soluble amino alcohol compound and (b) from about 0. 05 to about 5% of at least one protective colloid. The resultant aqueous polyacrylate dispersions are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.

US Patent:

48838500, Nov 28, 1989

Filed:

May 23, 1988

Appl. No.:

7/197713

Inventors:

Daniel H. Craig - Hockessin DE

Assignee:

Aqualon Company - Wilmington DE

International Classification:

C08F 220

US Classification:

526200

Abstract:

A process for manufacture of polymers comprising suspension polymerization of at least one vinyl monomer in the presence of from about 0. 01% to about 0. 4% by weight, based on the total monomer content, of at least one hydrophobically modified water-soluble, nonionic cellulose ether polymer and an inert electrolyte, and polymers prepared by same.

US Patent:

46847049, Aug 4, 1987

Filed:

Jun 19, 1986

Appl. No.:

6/876954

Inventors:

Daniel H. Craig - Hockessin DE

Assignee:

Hercules Incorporated - Wilmington DE

International Classification:

C08F 220

US Classification:

526200

Abstract:

Disclosed are aqueous dispersions having improved rheological and stability characteristics prepared by the emulsion polymerization of low protective colloid grafting potential monomers in the presence of a hydrophobically modified hydroxyethyl cellulose. The resultant aqueous dispersions or latices are useful in the manufacture of latex paints, binders for nonwoven materials, water-based inks, paper coatings and water-borne adhesives, such as pressure-sensitive adhesives.