Novolac Phenolic Resin

Low Free Phenol Phenolic Resin Pellets with Low Gas for Foundry Resin Coated Sands Product description Novolac Phenolic resin (two-step) is produced by condensing a molar excess of phenol to formaldehyde in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure the resin, hence the term “two-step,” because of

Powdered Novolac Phenolic Resin with Hexamine For Grinding Wheels Product description A novolak resin (two-step) is produced by condensing phenol with an insufficient amount of formaldehyde to complete the reaction in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure the resin, hence the term “two-step,”

Powdered Novolac Phenolic Resin with Hexamine for Friction Materials Product description Novolac phenolic resins are oligomers (polymers with a few repeating units) synthesized by repeatedly linking phenolic (hydroxy-aromatic) monomers with aldehyde chemicals under the condition of acidic catalyst and a molar excess of phenol to formaldehyde. The majority of our phenolic resin are combinations of phenol (hydroxybenzene, C6H6O) and formaldehyde (methanal, CH2O), though

Low Viscosity Novolac Phenolic Resin Pellet as Hardener for Epoxy Moulding Compound Product description The Novolac Phenolic resin Pellets are synthetic polymers formed as condensation products of phenols and formaldehyde under acidic catalyst and a molar excess of phenol to formaldehyde with low free phenol Application The Novolac Phenolic Resin Pellet are recommended used as hardeners for epoxy resins in applications such as molding materials, laminates, coatings and

Powdered Novolac Phenolic Resin with Hexamine For Bonded Abrasive Product description Novolac Phenolic resin (two-step) is produced by condensing phenol with an insufficient amount of formaldehyde to complete the reaction in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Hexa is made from ammonia and formaldehyde. Under heat and pressure, it yields ammonia and formaldehyde as methylene

Flake Phenolic Novolac Resin P2324 for Impregnating Glass Cloth in Cutting Wheels Product description In cutting wheels and depressed center wheels, glass cloth is used to reinforce the wheel. These are referred to as reinforced grinding wheels. The glass cloth used for reinforcing the wheel is impregnated with phenolic resin. The procedure for coating this glass cloth is as follows: The glass cloth is dipped in liquid phenolic resin, dried at 80–100 C for 3–10 min, and after

Low Free Phenol Phenolic Resin Pellets for Foundry Resin Coated Sands Product description Novolac Phenolic resin (two-step) is produced by condensing a molar excess of phenol to formaldehyde in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure the resin, hence the term “two-step,” because of the two

Long Flow Novolac Phenolic Resin Pellet for Foundry Resin Coated Sands Product description Novolac Phenolic resin (two-step) is produced by condensing phenol with an insufficient amount of formaldehyde to complete the reaction in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure the resin, hence the term

Long Flow Novolac Phenolic Resin Pellet for Electronic Molding Compound Product description Novolac Phenolic resin (two-step) is produced by condensing phenol with an insufficient amount of formaldehyde to complete the reaction in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure the resin, hence the term

Low Viscosity Novolac Phenolic Resin Pellet as Epoxy Hardener for Copper-clad Laminates Product description The Novolac Phenolic resin Pellets are synthetic polymers formed as condensation products of phenols and formaldehyde under acidic catalyst and a molar excess of phenol to formaldehyde in high purity. Application The Novolac Phenolic resins are recommended used as curing agents or hardeners for epoxy resins in applications such as molding materials, laminates, coatings

Long Flow Novolac Phenolic Resin Flake for Impregnating Glass Fiber Product description In cutting wheels and depressed center wheels, glass cloth is used to reinforce the wheel. These are referred to as reinforced grinding wheels. The glass cloth used for reinforcing the wheel is impregnated with phenolic resin. The procedure for coating this glass cloth is as follows: The glass cloth is dipped in liquid phenolic resin, dried at 80–100 C for 3–10 min, and after drying, is

Fast Curing Novolac Phenolic Resin Flake with Long Flow for Moulding Compound Product description A novolak resin (two-step) is produced by condensing phenol with an insufficient amount of formaldehyde to complete the reaction (ratios of formaldehyde to the phenol, F/P, are from 0.5 to 1) in the presence of an acid catalyst (sulfuric acid,oxalic acid, etc.). This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Hexa is made from

Powdered Fast Curing Novolac Phenolic Resin for Brake Linings Product description Novolak Phenolic resin (two-step) is produced by condensing a molal excess of phenol with formaldehyde to complete the reaction in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Hexa is made from ammonia and formaldehyde.Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure

Powdered Novolac Phenolic Resin Low Free Phenol for Friction Materials Product description An acidic catalyst and aThe final novolac resin is unable to react further without the addition of a cross-linking agent. The resins having the curing agent incorporated cure or "thermoset" to the desired degree when processed by the customer. The most common phenolic resin cross-linking agent is hexamethylenetetramine, also known as hexa, hexamine, or HMTA. Ground and blended with the

Fast Curing Novolac Phenolic Resin Powder for Friction Materials Product description An acidic catalyst and a molar excess of phenol to formaldehyde are conditions used to make novolac resins.The final novolac resin is unable to react further without the addition of a cross-linkinThe most common phenolic resin cross-linking agent is hexamethylenetetramine, also known as hexa, hexamine, or HMTA. Ground and blended with the resin. Application Novolac Phenolic Resin Powder is