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| Number | Title | Issue Date |
| 4067769 | Heat resistant and flame resistant papers Heat resistant and flame resistant papers composed of at least 60% by weight of phenolic fibers having a hardened degree of 3-30% by weight, which are obtained by melt spinning a phenolic resin and cross-linking the resulting filaments with an aldehyde.... | 01/10/1978 |
| 4066494 | Nitrogenous condensation products used as retention aids in papermaking Production of water-soluble crosslinked auxiliaries for the papermaking industry by reacting A. one equivalent of NH groups of a polyalkylene polyamine having from 15 to 500 alkyleneimine units with B. from 0.001 to 0.08 mole of a reaction product obtained fro... | 01/03/1978 |
| 4056510 | Amine-modified polyethers Water-soluble amine-modified polyethers are made by reacting an excess of alkylene polyamine such as ethylenediamine or diethylenetriamine with a halogen-containing polyether prepared by Reacting with a poly epoxide: A. a halogen-containing alkylene oxide mono... | 11/01/1977 |
| 4054542 | Amine-epichlorohydrin polymeric compositions Cationic, water-soluble, amine-epichlorohydrin polymeric compositions formed by reacting polymeric bis(3-chloro-2-hydroxypropyl) amines with tertiary amines are useful in papermaking processes, in water purification processes, textile manufacturing proces... | 10/18/1977 |
| 4038451 | Compositions comprising polyalkylenepolyamines and a mixture of mono- and diammonium phosphates as fire retardants for cellulosic substrates Cellulosic substrates, e.g. wood, textiles or paper, have increased fire resistance when treated with an aqueous solution of a polyalkylenepolyamine (e.g. polyethylenimine) and a mixture of mono- and diammonium phosphate.... | 07/26/1977 |
| 4038131 | Short cycle pressed fiberboard manufacturing process Pressed fiberboard is produced in an S-1-S type process at much shorter than normal (prior art) press cycles. The process includes the use of fiber furnish having preselected shrinkage characteristics. This furnish is wet formed into a mat either with or ... | 07/26/1977 |
| 4036821 | Manufacture of modified basic polyaminoamide with ammonium compound A process for the production of water-soluble auxiliary agents based on polyaminoamides by reacting a polyfunctional compound with a tertiary, monofunctional amine to form an ammonium compound and reacting that ammonium compound with a basic polyaminoamid... | 07/19/1977 |
| 4035229 | Paper strengthened with glyoxal modified poly(ଲ-alanine) resins Novel resins, useful as strengthening resins for imparting dry and temporary wet strength to paper, are disclosed. The resins are prepared by reacting branched water-soluble poly(ଲ-alanine) with glyoxal.... | 07/12/1977 |
| 4013480 | Cellulosic sizing agents Novel cellulosic sizing agents are described. They are ring-opened aziridinyl homopolymers of ##EQU1## wherein R1 and R2 are hydrogen or lower alkyl; R3 is hydrogen or methyl; R4 is an organic hydrophobic g... | 03/22/1977 |
| 4011130 | Leather-like waterlaid sheets containing particulate fillers Waterlaid sheets comprising essential solids consisting of (I) elastomeric binder, and (II) nonelastomeric solids comprising inflexible, non-fibrous, rounded, particulate fillers and a fibrous reinforcing component. The waterlaid sheets are useful as subs... | 03/08/1977 |
| 4004060 | Binding agents This invention provides certain complex molecules which possess excellent solubility in water and excellent reactivity making them useful in the manufacture of non-woven products and processes for their preparation. The compositions are comprised of struc... | 01/18/1977 |
| 4002588 | Hydrophilic-hydrophobic amphoteric polysalt sizing compositions and paper sized therewith The polysalt which consists essentially of a specified acrylamide-styrene-acrylic acid interpolymer and a water-soluble cationic polyamine having a molecular weight in excess of 1,000 (the molar ratio of the anionic to the cationic substituents in the ani... | 01/11/1977 |
| 3992251 | Process of making wet strength paper containing mono primary polyamine and organic dihalide modified, epoxidized polyamide Cationic extended terminated polyamide resins are prepared which exhibit highly desirable paper wet strength properties.... | 11/16/1976 |
| 3990939 | Paper sized with ketene dimer modified water-dispersible thermosettable cationic resins Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable ... | 11/09/1976 |
| 3989659 | Water-dispersible thermosettable cationic resins and paper sized therewith Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketone dimer and an epihalohydrin such as epichlorohydrin. The thermosettable ... | 11/02/1976 |
| 3988280 | Water-dispersible thermosettable cationic resins and paper sized therewith Disclosed are novel water-insoluble, water-dispersible thermosettable cationic resins derived by reaction of a water-soluble aminopolyamide, a hydrophobizing compound such as a ketene dimer and an epihalohydrin such as epichlorohydrin. The thermosettable ... | 10/26/1976 |
| 3987139 | Process of forming synthetic fibers A process of preparing polymer fibers by adiabatically flashing an emulsion or dispersion of water or other suitable nonsolvent in molten polymer, the emulsion or dispersion including an emulsifying agent and a dispersing aid, at an elevated temperature a... | 10/19/1976 |
| 3982993 | Preparation of a wax containing paper sheet A process for treatment of a cellulosic paper sheet in which the cellulosic fibers are treated with a polyamine or polyamide and a mixture of wax emulsion, urea-formaldehyde and an aldehyde donor such as a tris nitromethane or an oxazolidine.... | 09/28/1976 |
| 3966654 | Stable rosin dispersions Disclosed are essentially stable aqueous dispersions of fortified rosin which consist essentially of fortified rosin in finely-divided form; a water-soluble cationic resin, a specific example of which is a water-soluble cationic aminopolyamide--epichloroh... | 06/29/1976 |
| 3966684 | Cationic water soluble polymeric reaction product of polyaminopolyureylene-epichlorohydrin and nitrogen compound Disclosed are novel retention aid resins for paper fillers, said resins being derived by reaction of a nitrogen compound (such as ammonia) and a base resin which is the reaction product of an amino polymer and an epoxide difunctional toward amines. A spec... | 06/29/1976 |
| 3962159 | Graft copolymers of a polyamideamine substrate and starch, and method of making same Graft copolymers are prepared by condensing a polyamideamine substrate with starch under controlled reaction conditions. Aqueous solutions of the resulting graft copolymers function as superior wet strength additives in the paper making process.... | 06/08/1976 |
| 3949014 | Binder This invention relates to a binder comprising (a) a polyamine-epichlorhydrine resin obtained by reacting epichlorhydrine with a polyamine resin having at least 2 amino groups per molecule; and (b) an amphoteric high molecular compound having at least 2 ca... | 04/06/1976 |
| 3936547 | Process of preparing melamine resin films by impregnation of paper, cellulose, fleece or fabric Melamine resin films prepared by impregnating paper, cellulose fleece or fabric with a solution of a monomeric dimethylolmelamine mon-, di- or trimethylether, monomeric trimethylolmelamine mono-, di or trimethylether or a mixture thereof and drying the sa... | 02/03/1976 |
| 3931027 | Cellulose material treated with a thermosetting resin and having improved physical properties at elevated temperatures Cellulose material having improved resistance to thermal deterioration and having particular application as insulation material for electrical apparatus. The cellulose material is treated with an aqueous dispersion of a liquid, uncured, crosslinkable ther... | 01/06/1976 |
