ROBERT PAUL FOSS
Pilots at Ridgeview Rd, Hockessin, DE
License number
Delaware A0612709
Issued Date
Dec 2015
Expiration Date
Dec 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
651 Ridgeview Rd, Hockessin, DE 19707
Professional information
Preparation Of Photosensitive Polyaldehydes
US Patent:
4075175, Feb 21, 1978
Filed:
Jan 21, 1977
Appl. No.:
5/760934
Inventors:
Robert Paul Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
C08G 212, C08G 208
US Classification:
260 67R
Abstract:
Preparation of photosensitive polyaldehydes which have the formula: ##STR1## WHEREIN R is a photosensitive end group selected from ##STR2## R. sup. 1 is H or n-alkyl of 1-5 carbon atoms, preferably H, R. sup. 2 is n-alkanoyl of 1-4 carbon atoms, and
n is a positive integer of about 10-4000, is provided.
The polyaldehydes are prepared by the anionic polymerization of the appropriate aldehyde with an initiating amount of an alkali metal or tetraalkylammonium alkoxide of RO in the above formula.
The polyaldehydes are useful in articles and methods of relief imaging and in lithographic plates.
Novel Melt-Spun Elastomeric Fibers And The Preparation Thereof
US Patent:
2002001, Jan 24, 2002
Filed:
Jul 3, 2001
Appl. No.:
09/898294
Inventors:
Robert Foss - Hockessin DE, US
International Classification:
C08G018/10
US Classification:
528/065000
Abstract:
Novel melt-spun elastomeric fibers and methods for their preparation. Embodiments are provided in which fibers are melt-spun from a melt-spinnable elastomeric polymer comprising a diisocyanate-capped polyol prepolymer which is chain-extended with an aromatic dihydroxy compound. Also provided are melt-spinnable elastomeric polymers and prepolymers therefor. The fibers may be knit or woven into textile articles including, inter alia, hosiery and pantyhose.
Carbamated Poly(Vinyl Alcohol) Useful As A Binder In Elastomeric Photopolymer Compositions
US Patent:
4340686, Jul 20, 1982
Filed:
Jan 13, 1981
Appl. No.:
6/224685
Inventors:
Robert P. Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
C08F 832
US Classification:
525 59
Abstract:
Flexographic printing plates are prepared from photosensitive elastomeric compositions which comprise
(1) about 15 to about 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder,
(2) about 10 to about 70 percent by weight of a compatible monomer, and
(3) about 0. 1 to about 10 percent by weight of a free-radical generating system.
Element Containing Acrylic Amphoteric Polymers
US Patent:
5229250, Jul 20, 1993
Filed:
Aug 16, 1991
Appl. No.:
7/745675
Inventors:
Robert P. Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
G03C 176
US Classification:
430270
Abstract:
Amphoteric polymers prepared by polymerization of (a) acrylic acid, (b) N,N-dimethyl- or N,N-diethylaminoethyl methacrylate and, optionally, (c) esters of methacrylic or acrylic acid prepared by (i) emulsion polymerization of (b), (c) and the methyl ester of (a), followed by basic hydrolysis, or (ii) polymerization of (a), (b) and (c) in the presence of a strong acid, and photographic emulsions comprised of said polymers in which the molar ratio of (a) to (b) is at least 2 to 1 and a silver halide.
Analyte Detection By Means Of An Analyte-Responsive Polymer
US Patent:
5756279, May 26, 1998
Filed:
May 9, 1997
Appl. No.:
8/854206
Inventors:
Richard Calvin Ebersole - Wilmington DE
Robert Paul Foss - Hockessin DE
Michael David Ward - Minnetonka MN
Robert Paul Foss - Hockessin DE
Michael David Ward - Minnetonka MN
Assignee:
E. I. du Pont de Nemours and Company - Wilmington DE
International Classification:
C12Q 100, G01N 33545, G01N 2100
US Classification:
435 4
Abstract:
A method is provided for detecting an analyte in a liquid sample, the method using light energy propagational properties of an analyte-responsive polymer. The analyte-responsive polymer is interfaced with a means to detect changes in the light propagation of the analyte-responsive polymer and the changes are correlated to the amount of analyte in the liquid sample.
Silver Halide Emulsion Containing Acrylic Amphoteric Polymers
US Patent:
5187059, Feb 16, 1993
Filed:
Feb 5, 1991
Appl. No.:
7/650784
Inventors:
Robert P. Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
G03C 1005
US Classification:
430627
Abstract:
Amphoteric polymers prepared by polymerization of (a) acrylic acid, (b) N,N-dimethyl- or N,N-diethylaminoethyl methacrylate and, optionally, (c) esters of methacrylic or acrylic acid prepared by (i) emulsion polymerization of (b), (c) and the methyl ester of (a), followed by basic hydrolysis, or (ii) polymerization of (a), (b) and (c) in the presence of a strong acid, and photographic emulsions comprised of said polymers in which the molar ratio of (a) to (b) is at least 2 to 1 and a silver halide.
Acrylic Amphoteric Polymers
US Patent:
5011898, Apr 30, 1991
Filed:
Apr 27, 1989
Appl. No.:
7/343773
Inventors:
Robert P. Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
C08F 200
US Classification:
526234
Abstract:
Amphoteric polymers prepared by polymerization of (a) acrylic acid, (b) N,N-dimethyl- or N,N-diethylaminoethyl methacrylate and, optionally, (c) esters of methacrylic or acrylic acid prepared by (i) emulsion polymerization of (b), (c) and the methyl ester of (a), followed by basic hydrolysis, or (ii) polymerization of (a), (b) and (c) in the presence of a strong acid, and photographic emulsions comprised of said polymers in which the molar ratio of (a) to (b) is at least 2 to 1 and a silver halide.
Acrylic Amphoteric Polymers
US Patent:
4749762, Jun 7, 1988
Filed:
May 12, 1982
Appl. No.:
6/377373
Inventors:
Robert P. Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
L08F 2600
US Classification:
526312
Abstract:
Amphoteric polymers prepared by polymerization of (a) acrylic acid, (b) N,N-dimethyl- orN,N-diethylaminoethyl methacrylate and, optionally, (c) esters of methacrylic or acrylic acid prepared by (i) emulsion polymerization of (b), (c) and the methyl ester of (a), followed by basic hydrolysis, or (ii) polymerization of (a), (b) and (c) in the presence of a strong acid, and photographic emulsions comprised of said polymers in which the molar ratio of (a) to (b) is at least 2 to 1 and a silver halide.
Copolymers Of Pivalolactone And Isoprene Or Butadiene
US Patent:
4034021, Jul 5, 1977
Filed:
Jun 25, 1975
Appl. No.:
5/590371
Inventors:
Robert Paul Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
C08L 900, C08L 1300
US Classification:
260887
Abstract:
Disclosed herein are new, specifically modified, copolymers of pivalolactone with isoprene and/or butadiene. Also disclosed is a process for making copolymers comprising (1) polymerizing the diene with a lithium initiator and, optionally, metallating the resulting lithiopolydiene with an alkyllithium, (2) carboxylating the resulting polylithiopolydiene by reaction with carbon dioxide, (3) reacting the polymeric lithium carboxylate with tetraalkylammonium hydroxide or halide and (4) reacting the tetraalkylammonium salt with pivalolactone.
Photopolymerizable Elastomeric Compositions With Carbamated Poly(Vinyl Alcohol) Binder
US Patent:
4247624, Jan 27, 1981
Filed:
May 29, 1979
Appl. No.:
6/042943
Inventors:
Robert P. Foss - Hockessin DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
G03C 168
US Classification:
430281
Abstract:
Flexographic printing plates are prepared from photosensitive elastomeric compositions which comprise
(1) about 15 to about 89 percent by weight of a carbamated poly(vinyl alcohol) polymeric binder,
(2) about 10 to about 70 percent by weight of a compatible monomer, and
(3) about 0. 1 to about 10 percent by weight of a free-radical generating system.