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Inventor:
Shawl; Edward T.
Address:
Wallingford, PA
No. of patents:
35
Patents:












Patent Number Title Of Patent Date Issued
T994004 Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbama May 6, 1980
Diphenylmethane dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the condensation of N-aryl carbamic acid esters, such as ethylphenylcarbamate, with formaldehyde, para-formaldehyde or trioxane in the presence of strongly
7855304 Inorganic oxide extrudates December 21, 2010
An extrudate comprising an inorganic oxide and a comb-branched polymer is disclosed. The calcined extrudates are useful catalysts or catalyst supports. A palladium-gold catalyst prepared with a calcined titania extrudate of the invention is useful in making vinyl acetate from ethylen
7825204 Inorganic oxide extrudates November 2, 2010
An extrudate comprising an inorganic oxide and a comb-branched polymer is disclosed. The calcined extrudates are useful catalysts or catalyst supports. A palladium-gold catalyst prepared with a calcined titania extrudate of the invention is useful in making vinyl acetate from ethylen
7563740 Direct epoxidation process July 21, 2009
A catalyst comprising a transition metal zeolite and a noble metal is disclosed. The catalyst is prepared by an extrusion method using a comb-branched polymer as an extrusion aid. The catalyst is used in a reaction to produce epoxide from an olefin, hydrogen, and oxygen. The comb-bra
7232875 Preparation of comb-branched polymers June 19, 2007
A comb-branched polymer is disclosed. The polymer comprises recurring units of an unsaturated carboxylic monomer, an oxypropylene-rich poly(oxyethylene-oxypropylene) macromonomer and an oxyethylene-rich poly(oxyethylene-oxypropylene) macromonomer. The comb-branched polymer can be use
7175918 Polyolefin compositions February 13, 2007
The present invention relates to polyolefin compositions that incorporate an acrylic/polyether comb-branched copolymer, articles made from the compositions, such as polyolefin films and polyolefin fibers, and methods for making the compositions and the articles.
6815513 Process for preparing comb-branched polymers November 9, 2004
A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a monomer stream that contains an acrylic acid and a polyether macromonomer, and an initiat
6214958 Process for preparing comb-branched polymers April 10, 2001
A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a monomer stream that contains an acrylic acid and a polyether macromonomer, and an initiat
6034208 Copolymers useful as cement additives and a process for their preparation March 7, 2000
Unique, well defined macromonomers containing hydroxyl-functionality, unsaturation-functionality, and polyoxyalkylene segments are prepared by oxyalkylating an unsaturated initiator molecule having at least one oxyalkylatable hydrogen in the presence of an effective amount of a double
5985989 Method of making a water reducing additive for cement November 16, 1999
Substances useful as water reducing and superplasticizer additives for cement compositions are formed by in situ polymerization of one or more ethylenically unsaturated acid monomers such as acrylic acid or maleic anhydride in a reaction medium comprising a polyether such as polyprop
5938835 Cement composition August 17, 1999
A cement admixture comprised of a mixture of certain alkyl ether oxyalkylene adducts with certain oxyalkylene glycols to provide cement compositions of mortar and concrete which inhibit drying shrinkage while permitting substantial air entrainment and enhanced compressive strength.
5731476 Poly ether preparation March 24, 1998
Polyethers of polyhydric compounds are prepared by the liquid phase reaction of polyhydric compound and the reaction being carried out with separate liquid phases comprised of a polar polyhydric compound phase and an organic polyether containing phase.
5725654 Cement composition March 10, 1998
There is provided a cement composition having improved fluidity comprising cement and an addition copolymer of (a) an adduct of a polyether polyol and an ethylenically unsaturated isocyanate with (b) an ethylenically unsaturated carboxylic acid.
5723683 Separation of monoethers from diethers March 3, 1998
Monoalkyl glycol ether is separated from dialkyl glycol ether by phase separation using a hydrocarbon solvent, preferably with the addition also of water.
5670578 Cement additives September 23, 1997
Substances useful as water reducing and superplasticizer additives for cement compositions are formed by reaction of carboxylic acid polymers with a mixture of monofunctional and difunctional polyethers derived from C.sub.2 -C.sub.4 epoxides wherein partial cleavage of the polyethers and
5614017 Cement additives March 25, 1997
Substances useful as water reducing and superplasticizer additives for cement compositions are formed by reaction of carboxylic acid polymers with polyethers of C.sub.2 -C.sub.4 epoxides wherein partial cleavage of the polyether and esterification of the polyether and the cleavage pr
5565027 Cement composition October 15, 1996
The invention relates to a cement composition containing a water reducing amount of the product formed by reaction of polyvinyl alcohol and an hydroxyaldehyde such as 4-hydroxybutanal.
5413634 Cement composition May 9, 1995
The invention relates to a cement composition containing a shrinkage reducing amount of an alkyl ether derivative of an aliphatic polyhydroxy compound of the formula:wherein Q is a C.sub.3 -C.sub.12 aliphatic hydrocarbon group, R is hydrogen or C.sub.1 -C.sub.10 alkyl, at least one R bei
5241118 Process for the preparation of trisubstituted ureas by reductive carbonylation August 31, 1993
A process for preparing trisubstituted ureas is disclosed. A nitroarene is reacted with carbon monoxide and a secondary amine in the presence of a Group VIII transition metal catalyst and optionally one or more promoters selected from primary amines, halide ion-containing compounds, and
5227483 Process for recovery of amines and volatile acids from amine salts July 13, 1993
A process for recovering both an amine and a volatile acid from an amine salt is disclosed. In the process, the amine salt is reacted with a non-volatile acid to liberate the volatile acid. Thermal decomposition of the resulting amine/non-volatile acid salt liberates the amine.
5220061 Selective process for the preparation of diphenylmethane bis-(dialkyl ureas June 15, 1993
A selective process for the preparation of diphenylmethane bis(dialkylureas) is disclosed. An alkyl phenylcarbamate or an N,N-dialkyl-N'-phenylurea is reacted with a methylene bis(alkyl carbamate) in the presence of an acid catalyst. The use of a staged addition of phenylcarbamate or
5206412 Selective process for the preparation of diphenylmethane diisocyanate precursors April 27, 1993
A selective process for the preparation of diphenylmethane diisocyanate precursors is disclosed. An alkyl phenylcarbamate or an N,N-dialkyl-N'-phenylurea is reacted with a methylene bis(alkyl carbamate) in the presence of an acid catalyst. The use of a staged addition of phenylcarbam
4996359 Process for the preparation of aromatic bis dialkyl ureas February 26, 1991
Aromatic bis (dialkyl) ureas such as the bis (dimethyl) urea of 2,4-toluenediamine are prepared by reacting an aromatic diamine with isocyanic acid (HNCO) to convert the amino groups of the diamine to urea groups (--NHCONH.sub.2) to give an aromatic bis urea which is then reacted wit
4978779 Preparation of methylene diphenylene diisocyanates and polymethylene polyphenylene poly (isocyan December 18, 1990
An improved process is provided for the preparation of methylene diphenylene diisocyanates (MDI) and polymethylene polyphenylene poly (isocyanates) (PMDI) by the thermal decomposition of a methylene diphenylene bis (dialkylurea) or a polymethylene polyphenylene poly (alkylurea) in a
4883908 Process for the preparation of aromatic isocyanates from dialkyl ureas using an organic sulfonic November 28, 1989
An improved process is provided for the preparation of aromatic mono- and poly-isocyanates by the thermal decomposition of an aromatic bis dialkyl urea in solvent in the presence of an organic sulfonic acid or sulfonated aromatic ion exchange resin as a promoter for conversion of the ure
4873364 Process for the preparation of methylene diphenylene diisocyanates and polymethylene polyphenyle October 10, 1989
An improved process is provided for the preparation of methylene diphenylene diisocyanates (MDI) and polymethylene polyphenylene poly (diisocyanates) by the thermal decomposition of a methylene diphenylene bis (dialkylurea) or a polymethylene polyphenylene poly (dialkylurea) in a sol
4871871 Process for the preparation of aromatic mono- and polyisocyanates October 3, 1989
An improved process is provided for the preparation of aromatic mono- and poly- isocyanates by the thermal decomposition of an aromatic bis dialkyl urea in solvent in the presence of a tertiary amine hydrohalide, such as pyridine hydrochloride, as a promoter for conversion of the urea gr
4543419 Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbama September 24, 1985
Diphenylmethane dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the acid catalyzed condensation of an N-aryl carbamic acid ester, such as ethylphenylcarbamate, with a carbonyl compound, such as formaldehyde, at a reactio
4230877 Method for increasing the 4,4'dicarbamate isomer of the diphenylmethane dicarbamates during prep October 28, 1980
A method for increasing the 4,4' disubstituted isomer of the diphenylmethane dicarbamates produced by the acid catalyzed condensation of an N-aryl carbamic acid ester, such as ethylphenylcarbamate, with a carbonyl compound, such as formaldehyde, which comprises carrying out the conde
4202986 Preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates with Lewis a May 13, 1980
Diphenylmethane dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the condensation of N-aryl carbamic acid esters, such as ethylphenylcarbamate, with a carbonyl compound selected from formaldehyde, para-formaldehyde or tri
4172948 Preparation of diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamates October 30, 1979
Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are prepared by employing a superatmospheric pressure of anhydrous hydrogen chloride to catalytically rearrange an (alkoxycarbonyl)phenylaminomethylphenyl compound
4162362 Process for the preparation of diphenylmethane dicarbamates and polymethylene polyphenyl carbama July 24, 1979
Diphenylmethane dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the condensation of N-aryl carbamic acid esters, such as ethylphenylcarbamate, with formaldehyde, para-formaldehyde or trioxane in the presence of an organi
4146727 Process for the preparation of diphenylmethane mono and dicarbamates and polymethylene polypheny March 27, 1979
Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the protonic or Lewis acid catalyzed rearrangement of an (alkoxycarbonyl)phenylaminomethylphenyl compound having the general formula ##STR1##
4130633 Removal of selenium from urethane solutions December 19, 1978
A method for the removal and recovery of selenium from a urethane solution containing selenium compounds, which may be in the form of inorganic selenium and/or organoselenium compounds, which comprises contacting the selenium-containing urethane solution at a suitable temperature with an
4055629 Process for the removal of selenium compounds from urethane solutions October 25, 1977
A process for the recovery of selenium from a urethane solution containing selenium compounds which comprises contacting the selenium-containing urethane solution at a suitable temperature with copper (I) chloride, oxygen or an oxygen-containing gas such as air, and a complexing solvent










 
 
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