Howard R Lucas

US Patent:

53149645, May 24, 1994

Filed:

Nov 2, 1990

Appl. No.:

7/609496

Inventors:

Howard R. Lucas - Danbury CT

Assignee:

Cytec Technology Corp. - Wilmington DE

International Classification:

C08F26500
C08F26700

US Classification:

525293

Abstract:

A process for the preparation of novel grafted latexes having backbones formed from unsaturated monomers and having pendent isocyanate containing sidechains derived from isopropenyl-alpha, alpha- dimethylbenzyl isocyanate or copolymers thereof is described. Grafting latexes is carried out using a free radical redox initiator system in an aqueous medium. Latexes such as polybutadiene, polyvinyl chloride, and polyvinyl chloride-acrylic copolymers are converted to the corresponding isocyanate-functional latexes by the process of the invention. The isocyanate-functional grafted and cografted latexes described are useful in curable compositions.

US Patent:

57635293, Jun 9, 1998

Filed:

Mar 31, 1994

Appl. No.:

8/221315

Inventors:

Howard Robert Lucas - Danbury CT

Assignee:

Cytec Technology Corp. - Wilmington DE

International Classification:

C08J 8300

US Classification:

524507

Abstract:

Provided is an aqueous-dispersible, self-crosslinkable interpenetrating polymer network composition which comprises an aqueous-dispersible, isocyanate-based thermoplastic polymer containing urethane and/or urea linkage and an interpenetrating polymer containing latent reactive functionality, whereby the two polymers are at least partially entangled with each other on a molecular level. Also provided are aqueous dispersions of such self-crosslinkable interpenetrating polymer networks, methods of producing such aqueous dispersions, coating compositions therefrom and coated substrates and films obtained from it.

US Patent:

58662588, Feb 2, 1999

Filed:

May 16, 1995

Appl. No.:

8/442064

Inventors:

Howard Robert Lucas - Danbury CT

Assignee:

Cytec Technology Corp. - Stamford CT

International Classification:

B32B 2700

US Classification:

4284242

Abstract:

Provided is an aqueous-dispersible, self-crosslinkable interpenetrating polymer network composition which comprises an aqueous-dispersible, isocyanate-based thermoplastic polymer containing urethane and/or urea linkage and an interpenetrating polymer containing latent reactive functionality, whereby the two polymers are at least partially entangled with each other on a molecular level. Also provided are aqueous dispersions of such self-crosslinkable interpenetrating polymer networks, methods of producing such aqueous dispersions, coating compositions therefrom and coated substrates and films obtained from it.

US Patent:

45215634, Jun 4, 1985

Filed:

Oct 30, 1984

Appl. No.:

6/665513

Inventors:

Howard R. Lucas - Danbury CT

Assignee:

American Cyanamid Company - Stamford CT

International Classification:

C08J 3900
C08K 3900

US Classification:

524555

Abstract:

A low temperature cure, pigmented coating composition is provided. This coating composition includes a crosslinkable, solvent borne, solution polymer containing certain activated ester groups, and an amine/aminal equilibrium mixture. Also provided is a coating with improved gloss obtained by curing this pigmented composition.

US Patent:

52330036, Aug 3, 1993

Filed:

Oct 20, 1992

Appl. No.:

7/963880

Inventors:

Howard R. Lucas - Danbury CT

Assignee:

American Cyanamid Company - Stamford CT

International Classification:

C08G 1880
C08G 1881

US Classification:

526301

Abstract:

An improved process for preparing a one component self-crosslinking resin is provided. The process for making the self-crosslinking resin is carried out by copolymerizing an oxime-blocked m-isopropenyl-alpha, alpha-dimethylbenzyl isocyanate (m-TMI), hydroxyethyl acrylate, and another unsaturated monomer at 75. degree. C. to 85. degree. C. in a polar organic solvent having a dipole moment of at least 3, such as acetonitrile. The polar solvent retards the thermal deblocking of the blocked TMI, thereby preventing the premature self-crosslinking and gelation of the copolymerization product prior to its use as a self-crosslinking resin.

US Patent:

53692047, Nov 29, 1994

Filed:

Feb 16, 1993

Appl. No.:

8/018483

Inventors:

Howard R. Lucas - Danbury CT
Robert G. Lees - Stamford CT
Nicholas J. Albrecht - Redding CT

Assignee:

Cytec Technology Corp. - Wilmington DE

International Classification:

C08F 2058
C08F21418
C08F21402
C08F22042
C08F22054
C08F21802
C08F22028
C08F21206

US Classification:

526304

Abstract:

Low molecular weight crosslinking agents useful in coatings based on esters of acrylamidoglycolate ethers are disclosed. The copolymeric crosslinking agents of the invention are prepared by copolymerizing a reactive acrylamidoglycolate monomer such as MAGME. RTM. methyl acrylamidoglycolate methyl ether with comonomers such as methyl methacrylate or butyl acrylate. The process of preparing the copolymeric crosslinkers of the invention makes use of chain transfer agents to limit the molecular weight of the crosslinking agents to 10,000 or less.

US Patent:

39858286, Oct 12, 1976

Filed:

Jun 24, 1975

Appl. No.:

5/589966

Inventors:

Howard Robert Lucas - Danbury CT

Assignee:

American Cyanamid Company - Stamford CT

International Classification:

C08L 5100
C08L 5300

US Classification:

260876R

Abstract:

Acrylic multipolymer-vinyl chloride polymer compositions are rendered flame-retardant by the incorporation therein of dicyclopentadienyl iron or chromium acetyl acetonate.

US Patent:

52526895, Oct 12, 1993

Filed:

Oct 20, 1992

Appl. No.:

7/963778

Inventors:

Howard R. Lucas - Danbury CT
William F. Jacobs - Bethel CT

Assignee:

American Cyanamid Company - Stamford CT

International Classification:

C08G 1880

US Classification:

526227

Abstract:

A novel, one component self-crosslinking resin and a process for its preparation are provided. The resin is the copolymer of: (I) N-hydroxysuccinimide-blocked meta-isopropenylalpha, alpha-dimethylbenzyl isocyanate; (II) a hydroxy group-containing ethylenically unsaturated monomer such as hydroxyethyl acrylate; and (III) optionally, an ethylenically unsaturated monomer free of hydroxy groups such as methylmethacrylate or butyl acrylate. The copolymers are useful as thermally stable fast curing one component resins for paint, and produce, upon heat curing, films and objects with good hardness and solvent resistance.