Novolac Precured Sand Patent

US Patent for Proppant charge and method Patent (Patent ...

A precured proppant charge useful, for example, for propping a fracture in a subterranean formation is disclosed. The charge is made up of a large number of particles composed of a single substrate particle which can be silica sand, glass beads, or the like, coated with a thermoset resin. The thermoset resin is one which, when it is the resin coating on particles of a proppant charge ...

whatsapp

phenol formaldehyde resin coating machines sand coating ...

novolac precured sand patent phenol formaldehyde resin coating machines, sand coating. 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 Typical instances are foundry binders such as used for coating phenolic resins onto sand particles, .

whatsapp

CHEMFLOOR™ Novolac HS | Resource | GCP Applied Technologies

CHEMFLOOR™ Novolac HS is suited to use in water and sewage treatment, chemical and food processing areas, giving excellent protection against alkalis and acid solutions. Used instead of normal epoxy for high chemical or heat resistance, particularly for hot fat deep frying in commercial kitchens.

whatsapp

From aldehyde or derivative reactant patent appliion class

Patent class list (only not empty are listed) Deeper subclasses: ... It is possible to provide a process for producing a phenols novolac resin having an ortho rate of 30 to 60%, suitably 40 to 55% at a good yield (70% or more) and a resincoated sand having a high curing property prepared by using the above phenols novolac resin.

whatsapp

Flexible Epoxy Novolac Coatings: Use of Cardanolbased ...

 · Flexible epoxy novolac coatings were developed by reacting an epoxy novolac resin, poly[(phenylglycidyl ether)coformaldehyde] (PPGEF) with an amine curing agent, 4,4′diamino3,3′dimethyldicyclohexyl methane (BMCHA), cardanol based reactive diluent (Cardolite NC513) and two different cardanolbased flexibilizers (Cardolite NC514 and Cardolite NC547).

whatsapp

Resin binder for foundry sand cores and molds | Patexia

Aforementioned copending appliion Ser. No. 863,546, of which this appliion is a continuationinpart, is directed to an improved foundry sand composition comprising sand, a solid novolac resin, a lubricantcontaining solid resole resin reactive with said novolac resin, and optionally, hexamine present in an amount of up to about 5 parts by weight based on 100 parts by weight of the ...

whatsapp

SAFETY DATA SHEET EPOTEK TM121 Part A

Contains Epoxy Phenol Novolac . Other hazards . Hazards not otherwise classified (HNOC) Contains epoxy constituents. May produce an allergic reaction. Mixtures Epoxy Phenol Novolac CAS number: 1030% Classifiion Skin Irrit. 2 H315 Eye Irrit. 2 H319 Skin Sens. 1 H317 Aquatic Chronic 2 H411

whatsapp

SAFETY DATA SHEET EPOTEK H70E Part A

Contains Epoxy Phenol Novolac GHS Classifiion . Physical. Inhalation and ChemicalHazards Not classified. Human health Skin Irrit. 2 H315;Eye Irrit. 2 H319;Skin Sens. 1 H317 . Environment Aquatic Chronic 2 H411 . Gas or vapor in high concentrations may irritate respiratory system. Ingestion May cause discomfort if swallowed. Skin Contact

whatsapp

Porous epoxy phenolic novolac resin polymer microcapsules ...

 · Forty weed seeds were planted in a plastic pot (15 cm diameter, 15 cm height) filled with a 1:5 (v/v) mixture of sand and loam soil with all necessary nutrients (pH = ). The seeds were covered with cm of sand/soil mixture, and each pot was watered through the bottom by infiltrating irrigation to ensure optimal soil moisture.

whatsapp

Integrated circuit

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon. Large numbers of tiny MOSFETs (metal–oxide–semiconductor fieldeffect transistors) integrate into a small results in circuits that are orders of magnitude smaller ...

whatsapp

Patent Report: | US | Phenolic resin composition ...

[Patent Document 1] Japanese Laidopen Patent Publiion No. [Patent Document 2] Japanese Laidopen Patent Publiion No. . SUMMARY OF THE INVENTION. An object of the present invention is to provide a phenolic resin composition having excellent molding speed and mechanical properties and a phenolic resin cured product.

whatsapp

SAFETY DATA SHEET EPOTEK 323LP Part A

Epoxy Phenol Novolac (CAS: ) 12. ECOLOGICAL INFORMATION . Ecotoxicity The product contains substances which are toxic to aquatic organisms and which may cause long term adverse effects in the aquatic environment. Acute Fish Toxicity Very toxic to aquatic organisms. Degradability The product is biodegradable. Bioaccumulative potential

whatsapp

Patent Report: | US | Resincoated proppant and ...

A proppant comprises a particle and a polymeric coating disposed about the particle. The polymeric coating comprises the reaction product of a novolac polyol, an isocyanate, and an azole. The novolac polyol has a number average molecular weight of from about 200 to about 1000 g/mol. A method of form

whatsapp

EPA1

The present invention relates to a production process for a phenols novolac resin obtained by reacting phenols with formaldehydes, wherein they are reacted in the presence of a metal compound used as a alyze for the reaction described above, and a chelating agent is further added in order to deactivate a alytic action of the metal compound and a resincoated sand .

whatsapp

Proppant charge and method

A novolac is fusible and, since ... The suitability for use as a proppant of the precured resincoated sand particles produced as described in the preceding paragraph was tested by determining permeability as a function of stress for the material by a ... et al. patent, FIG. 8, discloses that sand coated with a onestep precured phenolic resin ...

whatsapp

Novel flame retardant thermoset resin blends derived from ...

 · The molar masses of the parent novolac and of the VBnovolac were found by SEC to be 2480 and 3240, respectively. If it is assumed that the repeat unit for the novolac and for the vinylbenzylated novolac are as given in Fig. 1, the molar masses of the repeat units are 106 and 222 respectively, then full vinylbenzylation would have given a molar mass for the product of 2480/106 × .

whatsapp

Novolac Structural Concrete

Five Star Novolac Structural Concrete is a three component, solids, ... TO INFRINGE ON ANY PATENT HELD BY OTHERS." For worldwide availability, ... Sand may be used as an abrasive. NOTE: PRIOR TO APPLICATION, READ ALL PRODUCT PACKAGING THOROUGHLY.

whatsapp

Nous vous invitons sincèrement à nous contacter via des hotlines et d'autres moyens de communication instantanée.