Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7642333 | Anhydride and resorcinol latent catalyst system for improving cure characteristics of phenolic resins An anhydride and resorcinol latent catalyst system for a phenolic resole resin provides a resin having long pot life and long shelf life, yet cures quickly thereafter. ... | 01/05/2010 |
| 7345132 | Method of producing novolak resin Provided an industrially excellent method of producing a phenol novolak resin having an ortho ratio of 30% or more by: (1) a method of reacting a phenol and an aldehyde using an oxalic acid catalyst at 110 to 160° C. under pressure; or (2) a method of reacting a ph... | 03/18/2008 |
| 7321020 | Polycondensation products and a process for their preparation The invention relates to the polycondensation products produced by reaction of bisphenol residues from bisphenol production with an aldehyde in an acidic medium useful for the production of refractory molded bodies, of unmolded substances used in the refractory indu... | 01/22/2008 |
| 7241833 | Phenolic novolaks and process for production thereof A process for production of phenolic novolak which comprises the step of conducting heterogeneous reaction of a phenol with 0.40 to 0.93 mol of an aldehyde per mol of the phenol in the presence of at least 25 parts by mass of a phosphoric acid per 100 parts by mass ... | 07/10/2007 |
| 7196156 | Flexibilized resorcinolic novolak resins and method of making same A flexibilized resorcinolic novolak resin is prepared by reacting a phenolic compound, such as resorcinol, with an unsaturated dihydroxy, an unsaturated aldehyde, an aliphatic dialdehyde, or a mixture thereof. An aldehyde (different from the unsaturated aldehyde and... | 03/27/2007 |
| 7074861 | Modified resorcinol resins and applications thereof A modified resorcinol resin is prepared by reacting a phenolic compound (e.g., resorcinol) with an olefinically unsaturated compound (e.g., styrene) and two types of aldehyde: a formaldehyde and an alkyl aldehyde (e.g., butyraldehyde). The reaction is typically carr... | 07/11/2006 |
| 6936680 | Method of producing novolak resin Provided an industrially excellent method of producing a phenol novolak resin having an ortho ratio of 30% or more by: (1) a method of reacting a phenol and an aldehyde using an oxalic acid catalyst at 110 to 160° C. under pressure; or (2) a method of reacting a ph... | 08/30/2005 |
| 6774168 | Adhesion promoting surface treatment or surface cleaner for metal substrates A coating composition comprising a phenolic resin, an alkoxy silane, and an acid. The coating composition of the present invention promotes adhesion between a multiple layer coating composition and a substrate and between the respective layers of the multiple layer ... | 08/10/2004 |
| 6730769 | Novolak resin, production process thereof and positive photoresist composition using the novolak resin (i) As a primary reaction, m-cresol is allowed to react with propionaldehyde in the presence of an acid catalyst and thereby yields a polymer having a weight average molecular weight Mw of 200 to 500 and a molecular weight distribution Mw/Mn of 1.7 or less, and (ii)... | 05/04/2004 |
| 6713591 | Aromatic oligomer and use thereof This invention relates to an aromatic oligomer represented by the following formula (1): (A—F)n—A (1) wherein A is a unit comprising (a) 30-90 wt % of a bicyclic or tricyclic aromatic compound and (b) 10-70 wt % of a phenol... | 03/30/2004 |
| 6646095 | Process for the manufacture of copolymers of formaldehyde and diphenyl oxide A process for the manufacture of copolymers of formaldehyde and diphenyl oxide and a carboxylic acid uses and acid with a pKa in the range of 1.2 to 3 as the catalyst.... | 11/11/2003 |
| 6642345 | Novolak aralkyl resin, preparation process thereof and composition containing said resin Preparation process for a novolak aralkyl resin having excellent heat resistance and curing property by reacting 0.4 to 0.8 mol of an aralkyl compound based on one mol of the low molecular weight novolak containing 90% by weight or more of bi-nuclear novo... | 11/04/2003 |
| 6608161 | Process for producing phenol-dicarbonyl condensates with increased fluorescence, epoxy resins, epoxy resin systems and laminates made with the same The present invention provides a process for producing phenol-dicarbonyl condensates high in fluorescence by reacting a phenolic compound with a 1,2-dicarbonyl compound in the presence of a catalyst selected from one or more carboxylic acid(s) or one or m... | 08/19/2003 |
| 6214964 | Phenol formaldehyde resins A process for forming a phenol formaldehyde resin, the process comprising the steps of: (i) reacting phenol with an excess of a formaldehyde material in the presence of an acid or base catalyst until water separates from the reactants as an immiscible lay... | 04/10/2001 |
| 6150492 | Cross-catalyzed phenol-resorcinol adhesive A two-part adhesive is provided wherein the first part comprises a stable aqueous alkaline monohydroxylic phenolic resole resin solution containing a methylene donor such as oxazolidine or a methylolurea and the second part comprises a stable resorcinolic... | 11/21/2000 |
| 6121412 | Preparation of fractionated novolak resins by a novel extraction technique The present invention provides a method for producing a film forming, fractionated novolak resin, by: a) condensing formaldehyde with one or more phenolic compounds, and thereby producing a novolak resin; b) adding a photoresist solvent, and optionally a water... | 09/19/2000 |
| 6100364 | Water-reducible phenolic binders, methods of preparation and coating systems A water-reducible binder for coatings comprises the reaction products of a) a phenolic resin comprising the reaction product of bisphenol A, t-butyl phenol and formaldehyde; b) an alkylene carbonate alkoxylating agent; c) a diol selected form the group co... | 08/08/2000 |
| 6090533 | Isolation of novolak resin without high temperature distillation and photoresist composition therefrom The present invention provides a method for producing a water insoluble, aqueous alkali soluble novolak resins having consistent molecular weight and superior performance in photoresist composition, by isolating such novolak resin without high temperature... | 07/18/2000 |
| 6046252 | Curatives for phenolic novolacs A binder composition of a phenolic novolac resin and a (lower) alkoxylated triazine-formaldehyde resin curing agent is disclosed. The triazine resins have sufficient carbon atoms in the alkoxy groups so as to provide a curing agent having a water solubili... | 04/04/2000 |
| 5976761 | Fractionation of phenol formaldehyde condensate and photoresist compositions produced therefrom A process for producing a water insoluble, aqueous alkali soluble, film forming novolak resin having low metal ions, made by the fractionation of a phenol formaldehyde condensation product, a process for producing a resin a photoresist composition of supe... | 11/02/1999 |
| 5939511 | Resin purification process The invention is directed to purification of phenolic resins and to a process for preparing an organic photoresist coating composition. The process comprises reacting one or more phenols to form a crude phenolic resin. The crude phenolic resin formed is t... | 08/17/1999 |
| 5928836 | Fractionated novolak resin copolymer and photoresist composition therefrom The present invention provides a method for producing a film forming, fractionated novolak resin copolymer exhibiting fast photospeed and superior performance in a photoresist composition. A method is also provided for producing photoresist composition fr... | 07/27/1999 |
| 5910559 | Fractionated novolak resin from cresol-formaldehyde reaction mixture and photoresist composition therefrom The present invention provides a method for producing a film forming, fractionated novolak resin having consistent molecular weight and superior performance in photoresist composition, by isolating such novolak resin fractions without high temperature dis... | 06/08/1999 |
| 5872195 | Curable coating compositions containing carbamate additive Curable coating compositions are described comprising (a) a polymer resin comprising active hydrogen-containing functional groups, (b) a curing agent having groups that are reactive with said functional groups on (a), and (c) a compound comprising at least one... | 02/16/1999 |
| 5859153 | Novolak compounds useful as adhesion promoters for epoxy resins A composition useful as a powder coating comprises an epoxy resin and a novolak compound or resin having a structure obtained from the reaction of a substituted phenol such as cresol and an aldehyde to form a substituted bis(hydroxymethyl) phenol intermed... | 01/12/1999 |
| 5719228 | Glass fiber binding compositions, process of making glass fiber binding compositions, process of binding glass fibers, and glass fiber compositions The present invention relates to a glass fiber binding composition having an effective binding amount of an aqueous compatible furan resin mixed with sufficient water to result in a binding composition having from 0.5 to 80% nonvolatile. The aqueous compa... | 02/17/1998 |
| 5686506 | Mixtures of phenolic novolaks for use with refractory aggregate and methods for making same A binder solution of a phenolic novolak resin in solvent, preferably furfuryl alcohol containing at least one chemical agent such as amines containing one to five, preferably two to four, nitrogen atoms, glycerine or mixtures thereof. Preferably, the bind... | 11/11/1997 |
| 5663246 | Acetal derivatives of resole compounds Cyclic acetal derivative of a resole includes the reaction product of an ortho resole compound with a carbonyl compound or a carbonyl compound derivative. The cyclic acetal derivatives of phenolic resole compounds exhibit enhanced storage stability and ca... | 09/02/1997 |
| 5591810 | Curable furan resin(s) modified with phenolic resin(s) for use as binders for cements and coating compositions having improved thermal stability processes for their preparation and their use Curable furan resins modified with phenolic resins for use as binders for cements and coating compositions having improved thermal stability, processes for their preparation and their use. Preparation of curable furan resins modified with phenolic resins based... | 01/07/1997 |
| 5580949 | Metal ion reduction in novolak resins and photoresists The present invention provides methods for producing water insoluble, aqueous alkali soluble novolak resins having a very low level of metal ions, utilizing treated ion exchange resins. A method is also provided for producing photoresist composition havin... | 12/03/1996 |
| 5571886 | Aromatic novolak resins An essentially aromatic alkali soluble novolak resin comprising the product resulting from the acid condensation of an aromatic aldehyde and a phenol where the resin has a molecular weight in excess of 1500 and a glass transition temperature in excess of ... | 11/05/1996 |
| 5567743 | Reclamation of ester-cured phenolic resin bonded foundry sands This invention relates to a process for reclaiming ester-cured phenolic resin bonded sand. The process comprises contacting attrition reclaimed sand with a compound which converts potassium compounds to a form having a melting point of least 550° C., and... | 10/22/1996 |
| 5567797 | Polyamide composition and process for its production The object of the present invention is a polyamide composition containing, in reference to the polyamide composition 0.1 to 1 wt. % terephthaldialdehyde and/or its acetals of C1 --C4 alcohols and optionally 3 to 30 wt. % melamine and... | 10/22/1996 |
| 5534612 | Glass fiber binding compositions, process of making glass fiber binding compositions, process of binding glass fibers, and glass fiber compositions The present invention relates to a glass fiber binding composition having an effective binding amount of an aqueous compatible furan resin mixed with sufficient water to result in a binding composition having from 0.5 to 80% nonvolatile. The aqueous compa... | 07/09/1996 |
| 5470924 | Phenol formaldehyde resins A process for forming a phenol formaldehyde resin including the steps of: (i) forming a first additive including a glycol and an aromatic dicaborxylic acid; (ii) adding said first additive as well as an alpha hydroxy acid to a first resin component compri... | 11/28/1995 |
| 5395915 | Method for simultaneous preparation of bisphenol F and novolak phenol resins Herein disclosed is a method for simultaneously preparing a highly pure bisphenol F and/or a bisphenol F for general use and a novolak phenol resin and/or a high molecular weight novolak phenol resin comprising the steps of: (1) a preparation step compris... | 03/07/1995 |
| 5359024 | Process for the preparation of a phenol-formaldehyde resin The invention relates to a process for the preparation of a phenol-formaldehyde resin by causing phenol and formaldehyde to condense under the influence of a basic catalyst, the catalyst being an aqueous solution containing alkali metal ions, carbonate io... | 10/25/1994 |
| 5344909 | Latent catalyzed phenolic resole resin composition A latent catalyzed phenolic resin composition is provided containing a thermosetting phenolic resole resin and a latent catalyst consisting essentially of a primary or secondary amine salt of a strong acid.... | 09/06/1994 |
| 5334692 | Highly branched polyphosphonates based on melamine New, highly branched polyphosphonates which have a greatly improved flame retardant action compared with known polyphosphonates which are suitable as additives for plastics. In addition the new polyphosphonates may be incorporated in plastics as stabilize... | 08/02/1994 |
| 5319063 | Phenolic resin and method for preparing same A phenolic resin can be obtained by a condensation reaction between a specific trifunctional aromatic compound and a phenolic compound. This resin can be reacted with a curing agent such as a hexamine to give cured articles having excellent heat resistanc... | 06/07/1994 |
