Patents by Inventor Paul B. Lawrence
Paul B. Lawrence 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).
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Patent number: 5276111Abstract: Disclosed is a composition comprising an admixture of(A) from 99 to 1 weight percent, based on the weight of the admixture, of a copoly(arylene sulfide) and(B) from 1 to 99 weight percent, based on the weight of the admixture, of a poly(aryl sulfone).Type: GrantFiled: January 29, 1993Date of Patent: January 4, 1994Assignee: Eastman Kodak CompanyInventors: Shriram Bagrodia, David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence
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Patent number: 5258489Abstract: A polymer having repeating units corresponding to the structure ##STR1## wherein R is selected from the group consisting of ##STR2## where z is 1, 2, 3, or 4, A is a divalent substituted or unsubstituted aromatic radical, y is in the range of 0.10 to 0 and x is in the range of 0.02 to 0.90 and n is at least 50.Type: GrantFiled: March 5, 1993Date of Patent: November 2, 1993Assignee: Eastman Chemical CompanyInventors: David R. Fagerburg, Jospeh J. Watkins, Paul B. Lawrence
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Patent number: 5182345Abstract: Disclosed is composition comprising an admixture of(A) from 99 to 1 weight percent, based on the weight of the admixture, of a copoly(arylene sulfide) corresponding to the structure[(--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.nwherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 25, and(B) from 1 to 99 weight percent, based on the weight of the admixture, of an bisphenol-A polycarbonate having an inherent viscosity of at least 0.3.Type: GrantFiled: July 12, 1991Date of Patent: January 26, 1993Assignee: Eastman Kodak CompanyInventors: Shriram Bagrodia, David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence
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Patent number: 5180775Abstract: Disclosed is a composition comprising(A) from 99.9 to 60 weight percent, based on the weight of the composition, of a copoly(arylene sulfide) and(B) from 0.1 to 40 weight percent, based on the weight of the composition, of an ethylene-propylene rubber.Type: GrantFiled: January 13, 1992Date of Patent: January 19, 1993Assignee: Eastman Kodak CompanyInventors: Shriram Bagrodia, David R. Fagerburg, Steven Gedon, Joseph J. Watkins, Paul B. Lawrence, Mark Rule
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Patent number: 5155183Abstract: Disclosed is a process for preparing a final copoly(arylene sulfide) by contacting an original copoly(phenylene sulfide) with a poly(phenylene sulfide) in the melt phase. The final copoly(arylene sulfide) exhibits an enhanced rate of crystallization.Type: GrantFiled: April 16, 1991Date of Patent: October 13, 1992Assignee: Eastman Kodak CompanyInventors: Ernest W. Arnold, III, Joseph J. Watkins, David R. Fagerburg, Paul B. Lawrence
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Patent number: 5155176Abstract: A composition comprising an admixture of(A) a copoly(arylene sulfide) corresponding to the structure[(--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.nwherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.Type: GrantFiled: March 23, 1992Date of Patent: October 13, 1992Assignee: Eastman Kodak CompanyInventors: Shriram Bagrodia, David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence
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Patent number: 5064937Abstract: A process for preparing a polymer having repeating units corresponding to the structure ##STR1## wherein y is in the range of 0.005 to 0.15, x is in the range of 0.02 to 0.25, n is at least 200, and R a divalent aromatic radial. The polymer is prepared by reacting a diiodoaromatic compound and elemental sulfur.Type: GrantFiled: June 6, 1990Date of Patent: November 12, 1991Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence, Mark Rule
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Patent number: 5026824Abstract: A process for preparing a polymer having repeating units corresponding to the structure ##STR1## wherein R is ##STR2## y is in the range of 0.005 to 0.10, x is in the range of 0.01 to 0.50 when R is ##STR3## x is in the range of 0.01 to 0.30 when R is ##STR4## and n is at least 200. The polymer is prepared by reacting a diiodoaromatic compound and elemental sulfur.Type: GrantFiled: May 14, 1990Date of Patent: June 25, 1991Assignee: Eastman Kodak CompanyInventors: Mark Rule, Jerry S. Fauver, David R. Fagerburg, Paul B. Lawrence, Joseph J. Watkins
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Patent number: 5021546Abstract: A process for producing elemental iodine and a copoly(arylene sulfide) corresponding to the structure ##STR1## wherein y is in the range of 0.001 to 0.15, x is in the range of 0.02 to 0.65 and n is at least 100, consisting essentially of (1) reacting at a temperature above about 175.degree. C., a mixture of diiodobenzene and diiodobiphenyl and elemental sulfur to produce the copoly(arylene sulfide), and (2) recovering the elemental iodine.Type: GrantFiled: June 11, 1990Date of Patent: June 4, 1991Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Mark Rule, Joseph J. Watkins, Paul B. Lawrence
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Patent number: 4977224Abstract: A process for preparation of a copoly(arylene sulfide) which has a decreased amount of disulfide radicals and corresponds to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.45 to 0 and n is at least 50,comprising contacting a copoly(arylene sulfide) corresponding to the structure ##STR2## wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.50 to 0.001 and n is at least 25,in the melt phase with a diiodoaromatic compound corresponding to the structureI-A-IwhereinA is a divalent substituted or unsubstituted aromatic radical.Type: GrantFiled: November 17, 1989Date of Patent: December 11, 1990Assignee: Eastman Kodak CompanyInventors: Joseph J. Watkins, David R. Fagerburg, Paul B. Lawrence, Mark Rule
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Patent number: 4977236Abstract: A process for preparation of a copoly(arylene sulfide) corresponding to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, T is a monovalent aromatic radical, x is in the range of 0.5 to 0.001 and n is an integer from 1 to 100.Type: GrantFiled: December 5, 1989Date of Patent: December 11, 1990Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence, Mark Rule
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Patent number: 4952671Abstract: A copoly(arylene sulfide) corresponding to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, T is a monovalent aromatic radical, x is n the range of 0.5 t 0.001 and n is at least 100.Type: GrantFiled: July 15, 1988Date of Patent: August 28, 1990Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence, Mark Rule
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Patent number: 4945155Abstract: A process comprising heating for a sufficient period of time and at a temperature in the range of the glass transition temperature of the polymer to 5 degrees C below the melting point of the polymer, a solid, comminuted, copoly(arylene sulfide) prepared by reacting at a polymer producing temperature a mixture of a diiodoaromatic compound and elemental sulfur which contains less than 0.05 weight percent carbon, the copoly(arylene sulfide) corresponding to the structure[(--A--S--).sub.1--x (--A--S--S--).sub.x ].sub.nwherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.2 to 0.005 and n is at least 100.Type: GrantFiled: May 11, 1989Date of Patent: July 31, 1990Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Mark Rule, Joseph J. Watkins, Paul B. Lawrence
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Patent number: 4939236Abstract: A process for preparing a copoly(arylene sulfide) corresponding to the structure[(--A--S--).sub.1-x (--A--S--S--).sub.x ].sbsb.nwherein x is in the range of 0.5 to 0.001 by reacting a mixture of a diiodoaromatic compound and elemental sulfur which contains less than 0.05 weight percent carbon.Type: GrantFiled: September 8, 1989Date of Patent: July 3, 1990Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence, Mark Rule
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Patent number: 4897454Abstract: A composition comprising an admixture of(A) from 99.9 to 90 weight percent, based on the weight of the admixture, of a polymer having repeating units corresponding to the structure ##STR1## wherein y is in the range of 0.001 to 0.15, x is in the range of 0.01 to 0.50 and n is at least 100, and(B) from 0.1 to 10 weight percent, based on the weight of the admixture, of a poly(phenylene sulfide) corresponding to the structure ##STR2## where r is at least 25.Type: GrantFiled: March 17, 1989Date of Patent: January 30, 1990Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence
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Patent number: 4877851Abstract: A composition comprising an admixture of(A) from 99.9 to 90 weight percent, based on the weight of the admixture, of a copoly(arylene sulfide) corresponding to the structure[(--A--S).sub.1-x (--A--S--S).sub.x ].sub.nwherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 200, and(B) from 0.1 to 10 weight percent, based on the weight of the admixture, of a poly(arylene sulfide) corresponding to the structure(--A--S--).sub.rA is the same as above and where r is at least 25.Type: GrantFiled: July 25, 1988Date of Patent: October 31, 1989Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence
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Patent number: 4826956Abstract: A process for producing a copoly(arylene sulfide) corresponding to the structure[--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.nwherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 200, comprising reacting within a reaction zone a mixture of a diiodoaromatic compound and elemental sulfur at a polymer producing temperature wherein the reaction zone contains an oxygen-containing gas flowing at a rate in the range of 0.001 to 0.08 ft3/hr/mol of oxygen per mole of sulfur.Type: GrantFiled: May 20, 1988Date of Patent: May 2, 1989Assignee: Eastman Kodak CompanyInventors: David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence, Mark Rule