公开(公告)号：US3442754A

公开(公告)日：1969-05-06

申请号：US3442754D

申请日：1965-12-28

Applicant: HERCULES INC

Inventor： ESPY HERBERT H

IPC: C08K5/17 ,  D21H17/55 ,  D21H3/58 ,  D21H3/36

CPC classification number: D21H17/55 ,  C08K5/17 ,  C08L77/00

公开(公告)号：US3686109A

公开(公告)日：1972-08-22

申请号：US3686109D

申请日：1970-09-24

Applicant: HERCULES INC

Inventor： ALDRICH PAUL H ,  BARTELL DON G ,  ESPY HERBERT H

IPC: C08L57/00 ,  C08L77/00 ,  C08F45/24

CPC classification number: C08L57/00 ,  Y10S525/916 ,  Y10S525/917 ,  C08L2666/14

Abstract: THE INVENTION RELATES TO AQUEOUS FORMULATIONS AND PROCESS OF PREPARING. THE FORMULATIONS ARE STABLE AND READILY DILUTABLE WITH WATER. THESE FORMULATIONS INCLUDE HIGH MOLECULAR WEIGHT WATER-SOLUBLE CATIONIC OR ANIONIC VINYL ADDITION POLYMERS IN ADMIXTURE WITH CERTAIN WATER-SOLUBLE CONDENSATION POLYMERS AND WATER, THE CONDENSATION POLYMERS BEING POLYAMIDES OR POLYUREYLENES. THE VISCOSITIES OF THE FORMULATIONS ARE SURPRISINGLY LESS THAN THE VISCOSITIES OF BINARY FORMULATIONS WITH THE SAME PROPORTIONS OF VINYL ADDITION POLYMERS AND WATER. TWO PROCESSES OF PREPARING THESE FORMULATIONS ARE DESCRIBED.

公开(公告)号：US3607622A

公开(公告)日：1971-09-21

申请号：US3607622D

申请日：1968-07-24

Applicant: HERCULES INC

Inventor： ESPY HERBERT H

IPC: C08G69/48 ,  D21H17/55 ,  D21H3/58 ,  C02B1/20 ,  C08G9/02

CPC classification number: D21H17/55 ,  C08G69/48

Abstract: Disclosed is a novel aminopolyamide-acrylamide-polyaldehyde resin useful in the paper making art to enhance the wet and dry strength of paper. Small amounts of the resin can also be used as a retention aid for mineral fillers in paper and as a flocculant for suspended matter.

公开(公告)号：AU666215B2

公开(公告)日：1996-02-01

申请号：AU4611293

申请日：1993-09-03

Applicant: HERCULES INC

Inventor： ESPY HERBERT H

IPC: D21C3/00 ,  D21C5/02 ,  D21C3/02 ,  D21C3/04

Abstract: A composition for repulping a cellulose fiber paper broke in an aqueous slurry comprising a mixture of a non-chlorinating oxidizing agent and a water-soluble buffering salt that is capable of maintaining the Ph between about 7 and about 12 in the reaction mixture of the wet-strength broke and the oxidizing agent, the use of the composition in a process for repulping the paper broke, particularly for repulping paper containing wet strength resins, and the process for repulping the paper broke.

公开(公告)号：CA912192A

公开(公告)日：1972-10-10

申请号：CA912192D

Applicant: HERCULES INC

Inventor： ESPY HERBERT H

公开(公告)号：CA2090065C

公开(公告)日：1999-01-12

申请号：CA2090065

申请日：1993-02-22

Applicant: HERCULES INC

Inventor： DASGUPTA SUNIL P ,  ESPY HERBERT H

IPC: D21H17/25 ,  D21H17/26 ,  D21H21/06 ,  D21H21/24

Abstract: Disclosed is a process for making paper to enhance the softness of the paper produced without reducing its dry strength comprising adding a cellulosic polymeric binder resin to the pulp slurry at the wet end of a paper machine, the binder resin being a cellulosic polymer that exhibits a cloud point in aqueous solution, producing a wet paper web, and drying the web, the polymer being caused to coalesce into fine colloidal particles at a temperature above the cloud point either before or after it is added to the slurry.

公开(公告)号：CA2146922A1

公开(公告)日：1995-10-19

申请号：CA2146922

申请日：1995-04-12

Applicant: HERCULES INC

Inventor： DASGUPTA SUNIL P ,  ESPY HERBERT H

IPC: C08G69/48 ,  C08G73/02 ,  D21H17/46 ,  D21H17/55 ,  D21H21/10 ,  D21H17/52 ,  D21H17/54

Abstract: OLIGOAMIDE-EPICHLOROHYDRIN RESINS AS DRAINAGE AIDS A water-soluble drainage-aid composition which is the reaction product of a bifunctional crosslinking agent which may be an epihalohydrin selected from the group consisting of epichlorohydrin or epibromohydrin, a 1,3-dihalo-2-propanol in which "halo" is chloro- or bromo-, or a glycidyl ester of an alkanesulfonic or arenesulfonic acid, and an oligoamide reaction product of a polyalkylene polyamine with a carboxylic acid selected from the group consisting of dicarboxylic acids containing between 5 and 10 carbons and their acyl halides, amides, and esters of alcohols having up to 6 carbon atoms, and tricarboxylic acids containing between6 and 10 carbon atoms and their acyl halides, amides, and esters of alcohols having up to 6 carbon atoms, with a mole ratio of polyamine to dicarboxylic acidor its functional derivative between 1.5/1 and 2/1 or a mole ratio of polyamine to tricarboxylic acid or its functional derivative of 3/1, the oligoamide reaction product being an amine-terminated oligo(aminoamide) having an average composition of at least two amide groups and at least four amine groups per molecule, the bifunctional crosslinking agent being used a level of between 1.5 and 2.5 moles per mole of oligoamide; a method for making the water-soluble drainage-aid composition, and a method for using the water-soluble drainage-aid composition a dewatering aid in paper manufacture.

公开(公告)号：CA2090065A1

公开(公告)日：1993-09-10

申请号：CA2090065

申请日：1993-02-22

Applicant: HERCULES INC

Inventor： DASGUPTA SUNIL P ,  ESPY HERBERT H

IPC: D21H17/25 ,  D21H17/26 ,  D21H21/06

Abstract: Disclosed is a process for making paper to enhance the softness of the paper produced without reducing its dry strength comprising adding a cellulosic polymeric binder resin to the pulp slurry at the wet end of a paper machine, the binder resin being a cellulosic polymer that exhibits a cloud point in aqueous solution, producing a wet paper web, and drying the web, the polymer being caused to coalesce into fine colloidal particles at a temperature above the cloud point either before or after it is added to the slurry.

公开(公告)号：CA2105412A1

公开(公告)日：1994-03-04

申请号：CA2105412

申请日：1993-09-02

Applicant: HERCULES INC

Inventor： ESPY HERBERT H

IPC: D21C3/00 ,  D21C5/02

Abstract: A composition for repulping a cellulose fiber paper broke in an aqueous slurry comprising a mixture of a non-chlorinating oxidizing agent and a water-soluble buffering salt that is capable of maintaining the Ph between about 7 and about 12 in the reaction mixture of the wet-strength broke and the oxidizing agent, the use of the composition in a process for repulping the paper broke, particularly for repulping paper containing wet strength resins, and the process for repulping the paper broke.

公开(公告)号：CA2085683A1

公开(公告)日：1993-06-24

申请号：CA2085683

申请日：1992-12-17

Applicant: HERCULES INC

Inventor： ESPY HERBERT H ,  MASLANKA WILLIAM W

IPC: D21H27/40 ,  C08G69/48 ,  D21H17/55 ,  D21H17/56 ,  D21H21/14 ,  D21H27/00 ,  C08L77/00

Abstract: A creping aid comprising the reaction product of a polyamide of a dicarboxylic acid or of the ester of a dicarboxylic acid and methyl bis(3-aminopropylamine) with epichlorohydrin in a mole ratio of the polyamide to the epichlorohydrin between about 1:0.1 and about 1:0.33, and a composition comprising an aqueous solution of the creping aid.