In 1849, urethane was created for the first time. Wurtz and Hoffman reported a reaction involving an isocyanate and a hydroxyl compound during those years. Dr. Otto Bayer modified this reaction for a commercial application in 1937. Before this time, polyester-based urethane polymers had gradually su Read More

Polyurethane has numerous benefits for a wide range of uses. Compared to most other polymers, polyurethane has a higher tensile strength and better resistance to abrasion. Because of its elasticity, it can serve as a cushioning material and is more flexible than most materials.The material is perfec Read More

The basic refining methods for polyether polyols can be broadly classified as follows: (1) Neutralization using inorganic or organic acids. In the polymerization reaction for the production of polyether polyol, inorganic acids are rarely used as neutralizing agents for systems using alkali metal hyd Read More

Rigid polyurethane foam, referred to as polyurethane rigid foam, which is second only to polyurethane flexible foam in the amount of polyurethane products. I. Polyurethane Rigid Foam Basic Knowledge Polyurethane rigid foam is mostly closed-cell structure, which has excellent characteristics such as Read More

Polyether polyols are produced by the ring-opening polymerization of low molecular compounds containing active hydrogen, such as (alcohols, amines) as starting agents, with compounds containing epoxy structures under the action of catalysts. Polyether polyol can be generally divided into four catego Read More

Every year, Belgians discard one million mattresses that end up in landfills and incinerators. The EU wants to recycle and reuse at least 55% of household waste, including mattresses, by 2025, while Belgium has decided to start mandatory recycling gradually in 2021. In this context, we can better un Read More

Trimethylolpropane, TMP, cas 77-99-6, is a white crystal or powder with three typical hydroxymethyl groups on its molecule, and thus has polyol properties similar to glycerol, which can react with organic acids to form mono- or multi-esters, with aldehydes and ketones to form acetals and ketones, an Read More

Trimethylolpropane, TMP, cas 77-99-6, is a widely used chemical material, which can be used to prepare alkyd resin coatings, polyurethane foam, plasticizers, stabilizers, surfactants and various polyether polyols.There are two production methods that are more commonly used. 1. Cross-canizalolol cond Read More

Polyols are one of the main raw materials used in the production of rigid polyurethane foam. Rigid polyurethane foam is a versatile material that is used in a wide range of applications, including insulation for buildings, appliances, and refrigerated transport, as well as in the construction of pan Read More

Polyurethane foam adhesive is a versatile adhesive that has many uses in construction, automotive, and industrial applications. It is made by mixing a polyurethane prepolymer with a polyfunctional amine or alcohol, which causes the prepolymer to react and expand into a foam. Polyurethane foam adhes Read More

The influence of polyol on spandex production is determined by the properties of polyol itself.The quality of polyether polyol is evaluated by the following indicators: hydroxyl value, acid value, moisture, viscosity, color, molecular weight distribution, unsaturation, etc. The following is a review Read More

Flexible foam polyether polyols are a type of polymer used in the production of flexible polyurethane foam. Polyols are the basic building blocks for the production of polyurethane, and they are typically made from the reaction of a polyfunctional alcohol with an alkylene oxide, such as propylene ox Read More

PTMEG, also called Polytetramethylene Ether Glycol, Polytetrahydrofuran, cas 25190-06-1, is an important chemical raw material, mainly used in the preparation of spandex in the field of chemical fiber, and in the preparation of elastomer, adhesive, coating, sealant and other fields in the non-fiber Read More

PTMEG1000 and PTMEG2000 are two different molecular weight Polytetramethylene Ether Glycol (PTMEG), which are identical in chemical structure, but due to different molecular weights, they have some differences in physical properties and applications. Molecular weight: PTMEG1000 has a molecular weigh Read More