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| Number | Title | Issue Date |
| 7781561 | Processes of synthesizing aromatic amine-based benzoxazine resins Processes of synthesizing aromatic amine-based benzoxazine resins are disclosed. The processes provide new routes for synthesizing benzoxazine from aromatic diamines or multifunctional aromatic amines that may solve the problem of insoluble products resulted from th... | 08/24/2010 |
| 7358393 | Method for preparing β-alaninamides The invention relates to β-alanine amides of general formula (I), wherein: R1 represents hydrogen or C1-6 alkyl that is optionally substituted by hydroxy, amino, carboxy, carbamoyl, methylmercapto, guanidino, optionally substituted aryl or het... | 04/15/2008 |
| 7354987 | Nitrogen-containing compound, the preparation thereof and application in amino-aldehyde resins The invention relates to a compound of formula I: where: X is equal to NR5; R4 is equal to a C1-C12 alkyl group, aryl group, aralkyl group or cycloalkyl group. R | 04/08/2008 |
| 7262237 | Time released curing system Curable urea formaldehyde binder compositions are provided which are useful in coated abrasive and wood engineering applications, in a time released fashion. The time released curable binder compositions include a urea formaldehyde resin and an aryl phosphite in var... | 08/28/2007 |
| 7199209 | Nitrogen-containing compound, the preparation thereof and application in amino-aldehyde resins The invention relates to a compound of formula I: where: X is equal to NR5; R4 is equal to a C1–C12 alkyl group, a... | 04/03/2007 |
| 6881817 | Adhesive composition with increased cure rate Adhesive composition consisting of an aminoplast resin with a free formaldehyde-like compound being present. In particular an adhesive composition consisting of a melamine-urea-formaldehyde resin to which a free formaldehyde-like compound has been added so that F/(N... | 04/19/2005 |
| 6579964 | Water-dilutable etherified melamine-formaldehyde resins Water-dilutable etherified melamine-formaldehyde resins obtained by reacting melamine, formaldehyde, a compound having anionic groups and an etherification alcohol in a mixing ratio of melamine:formaldehyde:compound having anionic group:etherification alc... | 06/17/2003 |
| 6518394 | End-functionalized aniline-based oligomers, corrosion-resistant copolymers and methods of making the same Methods of forming low molecular weight oligomers of aniline-based compounds are provided as well as methods of forming varied molecular weight oligomers and polymers that are aniline-based which are end-functionalized and capable of being reacted with ot... | 02/11/2003 |
| 6307007 | Polycondensation products and their use as dyeing aids New water-soluble polycondensation products are obtained by reaction of polyfunctional amines with cyanamide, its derivatives or polymers in the presence of sulfamic acid. They are excellent fixing agents which improve fastness properties of dyeings with ... | 10/23/2001 |
| 6239251 | End-functionalized aniline-based oligomers, corrosion-resistant copolymers and methods of making the same Methods of forming low molecular weight oligomers of aniline-based compounds are provided as well as methods of forming varied molecular weight oligomers and polymers that are aniline-based which are end-functionalized and capable of being reacted with ot... | 05/29/2001 |
| 6201095 | Color improvement of DME-melamine resins A process is described for preparing a dialkoxyethanal-amine derivative resin low in color by adding low amounts of formaldehyde to the reactants before acidification and heating. The reaction product is also claimed. The composition is useful in a variet... | 03/13/2001 |
| 6037440 | Cross-linked linear (2-cyanoacetamido) reactive polyurethanes Polyurethanes with reactive 2-cyanoacetamido moieties are cross-linked with selected electrophiles to give polyurethanes with increased network density.... | 03/14/2000 |
| 6034201 | Process for preparing urea-formaldehyde resins A method of forming a urea formaldehyde resin includes the step of heating solid paraformaldehyde to a temperature of 60 to 120° C. Urea is added to the heated paraformaldehyde to form a urea mixture, which is dry mixed and heated until a temperature of ... | 03/07/2000 |
| 6031132 | Amide-group-containing polyacetal and its production process and use An amide-group-containing polyacetal, having acetal structure unit (1) of general formula (1) below in its molecule. This amide-group-containing polyacetal is usable as a detergent builder for detergent compositions. ##STR1## A production process of ... | 02/29/2000 |
| 6005064 | Thermosetting compounds, cured product thereof and method of preparing the thermosetting compound A novel thermosetting compound which is speedily curable, generates no by-products during curing and gives cured products having excellent heat resistance and inflammability. A thermosetting compound characterized in containing, per molecule, at least one... | 12/21/1999 |
| 5942595 | Process for co-polymerization of formaldehyde with cyclic ethers in the presence of organic nitro compounds Disclosed is a process for copolymerization of formaldehyde with cyclic ethers in the presence of organic nitro compounds. The process enhances the selectivity for the cyclic copolymer.... | 08/24/1999 |
| 5908914 | Benzylic ether phenolic resole resins and their uses This invention relates to benzylic ether phenolic resole resins prepared in a sealed reaction vessel and their uses. The benzylic ether phenolic resole resins are prepared by heating phenol and an aldehyde in a sealed reaction vessel in the presence of a ... | 06/01/1999 |
| 5866671 | Molded parts used for photographic sensitive materials and resin compositions used to make thereof A novel resin composition for use in applications requiring low formaldehyde concentration levels. The novel composition comprising a stabilized polyacetal polymer with capped end groups is characterized by the concentration of formaldehyde generated from... | 02/02/1999 |
| 5866670 | Process for preparing polyacetal copolymer A process for producing a polyacetal copolymer, which is extremely heat-stable and is extremely reduced in the quantity of unstable terminals even in a high polymerization yield in which trioxane as the principal monomer, comprises copolymerization of tri... | 02/02/1999 |
| 5863879 | Dye transfer inhibitors for detergents The use of polymers which are preparable by reaction of (a) polymers that contain vinylamine units, with (b) compounds that contain aldehyde or keto groups, and optionally (c) NH- and/or OH-containing compounds and which contain aminal, hemiaminal and/or aminal-acetal s... | 01/26/1999 |
| 5844059 | Process for preparing polyacetal copolymer To prepare a thermally very stable polyacetal copolymer containing a very small amount of unstable parts in a high yield according to a simple process wherein an isopolyacid or an acid salt thereof is used as the polymerization catalyst in the copolymeriz... | 12/01/1998 |
| 5821318 | Hardener composition for epoxy resins A composition which consists essentially of the following components: A1) polyamines of formula (I) and/or (II) ##STR1## wherein R1 and R2 are each independently of the other a hydrogen atom or a methyl x is an integer from 1 to 3, a... | 10/13/1998 |
| 5795934 | Method for preparing a urea-extended phenolic resole resin stabilized with an alkanolamine A water-soluble urea-extended phenol-formaldehyde resole resin stabilized with an alkanolamine alone or combined with a monosaccharide or disaccharide, methods of manufacturing the resin and using it, and products prepared using the resin.... | 08/18/1998 |
| 5739211 | Rubber compositions containing a pyrazine amide The present invention relates to rubber compositions containing a pyrazine amide of the formula: ##STR1##... | 04/14/1998 |
| 5739260 | Hydrophobically modified resin composition for graphics applications A resin composition useful as a crosslinker for graphics applications is provided comprising the reaction product of an amine derivative chosen from melamine, glycolurile or their mixtures with a C1 to C8 dialkoxyethanal, the reactio... | 04/14/1998 |
| 5739255 | Benzylic ether phenolic resole resins This invention relates to benzylic ether phenolic resole resins prepared in a sealed reaction vessel. The benzylic ether phenolic resole resins are prepared by heating phenol and an aldehyde in a sealed reaction vessel in the presence of a divalent metal ... | 04/14/1998 |
| 5705605 | Process for the preparation of a dyeing auxiliary There is described a process for the preparation of basic poIycondensates, which comprises (a) reacting an amine of formula ##STR1## wherein R1, R2, R3 and R4 are each independently of one another hydrogen ... | 01/06/1998 |
| 5693743 | Aminoplastics The invention relates to aminoplastics, which are created by reacting comnds that contain amide groups with glutaric dialdehyde, and to a process for their preparation and to their use. The aminoplastic according to the invention is free of formaldehyde ... | 12/02/1997 |
| 5686554 | Process for the manufacture of paraformaldehyde The process comprises providing a formaldehyde solution at a concentration of 80-89%; heating the solution to a temperature of 80°-100° C.; pouring the heated solution over heated zones on a metal belt conveyor travelling from the heated zones to other,... | 11/11/1997 |
| 5665851 | Aminoplastic resins and their use as a crosslinking agent for cellulose Aminoplastic resin based on one or more amino derivatives and one or more aldehydes in which the amino derivative is melamine, glycoluril or their mixture in variable proportions and that the aldehyde is a product of formula (I) R--CHO where R=a dialkoxym... | 09/09/1997 |
| 5635583 | Catalytic composition and method for curing urea-formaldehyde resin Disclosed is a binder composition for binding substrates such as wood furnish for particleboard manufacture. The binder comprises a mixture of a first aqueous solution, comprising a buffering salt catalyst and preferably an acid, with a second aqueous sol... | 06/03/1997 |
| 5608030 | Process for the preparation of polyacetals Process for continuous preparation of homo- and copolyoxymethylenes with stable end groups in a homogeneous phase, in which in a tubular reactor with static mixing elements cyclic formaldehyde oligomers are polymerized in the presence of protonic acids as... | 03/04/1997 |
| 5606011 | Melaminic polycondensates Condensation compounds obtained by means of the polymerization of polyami compositions essentially constituted by derivatives of 2,4,6-triamino-1,3,5-triazine, having the general formula (I): ##STR1## with aldehydes, preferably formaldehyde.... | 02/25/1997 |
| 5597557 | Colorant compositions and processes A process for making solid colored particles by preparing a reaction solution in water comprising formaldehyde, urea, a cyclic polyamine functional triazine compound, and acid. A dye can be incorporated into the reaction solution if a color other than whi... | 01/28/1997 |
| 5506332 | Preparation of polyacetals, use thereof and novel polyacetals A process for preparing polyacetals by copolymerization of glyoxylic esters with other copolymerizable monomers in the presence of anionic or cationic polymerization initiators, with or without the introduction of stable end groups and with or without hyd... | 04/09/1996 |
| 5424377 | Process to prevent scale adhesion using condensation product of aromatic amine and a quinone A process to prevent scale adhesion to reactor surfaces using an alkaline solution of the condensation product of an aromatic diamino compound and a quinone. The aromatic amino compound has the general formula (1): ##STR1## wherein R1 is a... | 06/13/1995 |
| 5411802 | Colorant compositions and processes A process for making solid colored particles by preparing a reaction solution in water comprising formaldehyde, urea, a cyclic polyamine functional triazine compound, and acid. A dye can be incorporated into the reaction solution if a color other than whi... | 05/02/1995 |
| 5407980 | Adhesive composition comprising isocyanate phenol-formaldehyde and tannin, useful for manufacturing plywoods for exterior application The present invention relates to an adhesive composition for manufacturing plywood for exterior application including: a) 121 parts by weight phenolic resin; b) 5 to 121 parts by weight isocyanate; c) 1 to 40 parts by weight tannin selected from the group consistin... | 04/18/1995 |
| 5380789 | Method of preparing vegetable oil-modified phenolic resin and laminate produced by using the same A catalyst selected from a perfluorosulfonic acid and an anhydride thereof enables a non-conjugated drying oil to react with a phenol to form a phenol-added vegetable oil without causing hydrolysis of the non-conjugated drying oil. The phenol-added vegeta... | 01/10/1995 |
| 5378795 | Polyazomethines containing trifluoromethylbenzene units Soluble, amorphous, aromatic polyazomethine polymers and copolymers were prepared by reacting a dialdehyde monomer with a diamine monomer containing trifluoromethylbenzene and various combinations thereof in a solvent, such as N,N-dimethylacetamide. The r... | 01/03/1995 |
