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US4740535A - Phenolic resin binders for foundry and ...

US4740535A - Phenolic resin binders for foundry and refractory uses - Google Patents A process for preparing modified phenolic resole resins providing improved binders for refractories and foundry...

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Foundry Resins - Phenolic Urethane Cold Box (PUNB ...

Enviroset® 3D Jet Resin . HA-International's newest resin, Enviroset 3D Jet Resin, is a low viscosity thermosetting furan resin that has been specially manufactured for use in all 3D Printers for sand cores and molds and is suitable for use with all types of metal. This furan resin offers a number of features and benefits that set it apart from conventional furan resins on the market:

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Foundry | SpringerLink

A description of all synthetic organic resins used as foundry binders is provided with an overview of the chemistry and coremaking process. Where appropriate, significant advancements made in each process are described. A new section on emissions from phenolic resins used as foundry binders is provided.

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History - Company - Prefere Resins

Formation of Prefere Resins within Dynea to focus on the European phenolic resins market. 2003. New brand name: Prefere ® family of resins. 2001. The new Dynea company name and identity are launched worldwide. 1992. Funk Chemie Group acquired Erkner site.

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Resin coated sand for casting Patent Grant Saeki July 16 ...

This invention is related to the foundry molding operations and a resin for the coating of foundry aggregates for mold preparations. The resin is a phenolic type resin wherein aldehydes are reacted with a mixture of bisphenol A and bisphenol F, and the ratio of bisphenol A to bisphenol F can vary from 98:2 to 80:20.

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US Patent for Benzylic ether phenolic resole resins and ...

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 divalent metal catalyst without removing water generated by the reaction until an appropriate endpoint for the …

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Thermal decomposition of foundry resins: A determination ...

Resins commonly used by the foundry industry include phenol-formaldehyde, phenolic-urethane and furan. Once the molten metal is poured into the sand mold and core binders will be exposed to the intense heat of metal castings and …

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A photosensitive resin composition, a cured film, an ...

A photosensitive resin composition containing a compound (E1) having a phenolic hydroxyl group. Provided is a photosensitive resin composition in which the cured film has high bending resistance even after a reliability …

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Improved ester hardeners for phenolic resin ... - Patents

The Spreparation of such resins is well-known and BO a LMM/1 531yr has been described, for example, in U.S. Patent No. 3,485,797. The phenols employed in the formation of the phenolic resin are generally any of the monohydric phenols which are used to prepare phenolic resins. Exemplary phenols include phenol itself and the cresols.

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Method For Producing Foundry Molds And Foundry Molding ...

METHOD FOR PRODUCING FOUNDRY MOLDS AND FOUNDRY MOLDING COMPOSITIONS Abstract. Foundry molding composition is prepared by mixing a granular refractory material, such as sand, with a curing agent and a phenol-formaldehyde resin binder which has been modified with 10-70 percent, based on the weight of the resin, of furfural or furfuryl alcohol.

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Phenolic Novolac And Resol Resins - Phenolic thermosetting ...

Phenolic resin chars when heated to temperatures greater than 480°F (250°C). This process continues at very high temperatures greater than 1,000°F (>500°C), until the resin completely converts to amorphous carbon. This characteristic contributes to the unique ablative properties of phenolic resins.

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(~ 2026):(Resol / Novolac)/ …

5.15.2 lignin based phenolic resin 5.16 patent analysis 5.16.1 introduction 5.16.2 methodology 5.16.3 document type table 16 granted patents are 20% of total count in last 10 years figure 27 number of patents in last 10 years ... table 52 phenolic resin market size for foundry & moldings, by region, 2019-2026 (usd million)

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Phenolic Resins & Crosslinkers | Technologies | Allnex ...

Phenolic resins / phenol formaldehyde resins are used in a wide variety of industrial products that need a durable, smooth and spotless coating – thus phenolic resins are perfect for molded objects like billiard balls and circuit boards or as phenolic coatings on cars and cans. Other uses include phenolic for insulation and various ...

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Phenolic resin-containing aqueous compositions ...

What is disclosed are aqueous compositions which are useful for coating solid substrates such as glass, plastic and metal. The aqueous compositions comprise colloidal silica, a phenolic resin, water and at least one hydrolyzable silane. An example of such a composition is colloidal silica, phenolic resin, water and CH3SiO3/2 obtained from CH3Si(OCH3)3.

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Studies on thermal decomposition of phenol ... - China Foundry

This paper presents results of thermoanalytical and structural research on phenolic binder used in foundry for the preparation of moulding sand. The binder has been prepared based on resole type phenolic resin with the addition of ester hardener. The aim of the study was to determine the structural changes taking place in the phenolic binder under the …

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Phenolic Resin Market worth $14.4 Billion by 2026 ...

The phenolic resin market is projected to grow from USD 11.7 Billion in 2021 to USD 14.4 Billion by 2026, at a CAGR of 4.3% during the forecast period. The growth of phenolic resin market is ...

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Method for accelerating cure of resole type phenolic resins

The cure of resin compositions comprising a mixture of a resole type phenol aldehyde resin and a novolac type phenol formaldehyde resin is improved by employing resorcinol as all or part of the phenolic component in the novolac type resin. The resin compositions are particularly useful as binders for foundry sand.

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Alpha Resins | Foundry Resin Systems

Alpha Resins | Foundry Resin Systems. 330-683-2200 Email Us. HIGH PERFORMANCE. FOUNDRY RESIN. TECHNOLOGY. Trust in Alpha Resins' unmatched foundry resin know-how. Our high-performance resin systems include no-bake and cold-box technologies for unmatched productivity and casting quality. PRODUCTS.

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FOUNDRY BINDERS ON THE BASIS OF PHENOLIC RESINS - …

FOUNDRY BINDERS ON THE BASIS OF PHENOLIC RESINS. United States Patent 3878159. Foundry binders comprising a) a novolak prepared by condensation of phenols with aldehydes, b) a silane, c) a diamide of a long-chain monocarboxylic acid, and optionally d) an aromatic carboxylic acid and a process for their production.

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Global and China Phenolic-Formaldehyde Resin Market ...

Phenolic-Formaldehyde Resin market is segmented by region (country), players, by Type, and by Application. Players, stakeholders, and other participants in the global Phenolic-Formaldehyde Resin market will be able to gain the upper hand as they use the report as a powerful resource.

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Modified phenolic resins - Patent DE-102008055042-A1 - …

1 Abstract. The present invention relates to modified phenolic resins containing silicic acid ester units. The modified phenolic resins may, for. B. as a component of foundry binder systems use. The invention also relates to a process for preparing such modified phenolic resins and two-component binder systems containing these modified phenolic ...

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US4345003A - Resol phenolic resin binder ... - Google …

A phenolic resin binder useful for hot coating foundry sand and comprising a mixture of a solid resol phenolic resin and a lubricant is provided in the form of beads or rods of diameter of about 0.5 to 7 mm and a length of about 0.5 to 30 mm. The beads or rods can be formed directly from a molten mixture of the components or the molten mixture can first be solidified and thereafter …

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Global Phenolic Resin Market (2021 to 2026) - Growing Need

The phenolic resin market is estimated to be USD 11.7 Billion in 2021 and is projected to reach USD 14.4 Billion by 2026, at a CAGR of 4.3%. Wood adhesive application is one of the fastest-growing ...

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Resin binder for foundry sand cores and molds | Patexia

Patent 04252700 - Resin binder for foundry sand cores and molds > Description. Description ' ... A representative attempt in this direction is the use of a solid resole phenolic resin obtained with an ammonia catalyst (hereinafter referred to as a solid ammonia resole resin). This method is, however, associated with certain drawbacks such as ...

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Georgia-Pacific Chemicals manufactures an extensive line ...

Our solid RESI-FLAKE ® resins were developed for use in foundry shell and core molds applications. Liquid RESI-SHELL ® resins are used in the production of foundry shell molds and cores by the warm air sand process, and can be used in combination with RESI-FLAKE resins as a properties modifier. RESI-SET ® liquid resins are specifically designed …

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US 5981622 A - Foundry binder of polyurethane, phenolic ...

The Lens serves all the patents and scholarly work in the world as a free, open and secure digital public good, with user privacy a paramount focus.

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The Worldwide Phenolic Resin Industry is Expected to Reach ...

The phenolic resin market is estimated to be USD 11.7 Billion in 2021 and is projected to reach USD 14.4 Billion by 2026, at a CAGR of 4.3%. Wood adhesive application is one of the fastest-growing ...

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US Patent for Process for preparing phenol-formaldehyde ...

This invention relates to phenolic resins containing high levels of furfuryl alcohol. The utility of phenol-furfuryl alcohol-formaldehyde resins as foundry binder compositions, laminating and molding resins is well known. Likewise, procedures for preparing such resins have been disclosed in the art.

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An Eco-Friendly Alternative To Phenol Formaldehyde Resin ...

An Eco Friendly Alternative To Phenol Formaldehyde Resin. The present invention relates to eco-freindly resins, which may be used as substitute for phenolic resins comprising soy and CNSL in defined ratio. Further the use of soy and CNSL in defined ratio provides soy CNSL resin, which has high binding capacity.

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US4134442A - Furan-phenolic resins for collapsible …

A resin for coating sand and a resin-coated sand produced therefrom wherein the resin is prepared by incorporating furan into a phenolic novolak resin. In the preferred practice, the resin is produced by reaction of furfuryl alcohol with a phenolic compound at an acid pH to give a furfuryl-phenolic intermediate in a first step, and then, in a second step, reacting the furfuryl …

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