Our Products

Rotary Evaporator

Laboratory equipment

Jacketed Reactor

Contact Us

We Cherish All Interactions

Polyols for Polyurethanes – Chemical production and .

Polyester polyols. Polyester polyols for polyurethanes are prepared by the condensation reaction between glycols—such as ethylene glycols, propylene glycols, 1,4 butanediol, or 1,6 hexane diol—and a dicarboxylic acid. Polyesters are a class of polymers that allows for enormous variation of .

1.3.2.1- Aliphatic polyester polyols - Poliuretanos

*Average functionality = PM x OH content (meq/g) / 1000. In polyester polyols production process, the diol, triol, etc is first heated to a temperature of 60-90 °C.Then the dicarboxilic acid is added and removal of the reaction water begins.

Polyester Polyol - SBHPP

Polyester polyols are intermediates for the manufacturing of a polyurethanes, through the reaction with isocyanates. The Durez ® - Ter polyols are essentially produced starting from saturated diacids and diols and vary often tailor maid to a variety of property requirements.

POLYETHER POLYOLS PRODUCTION Basis and Purpose .

polyether polyols manufacturing units (PMPU). Polyether polyols are defined as the products formed by the reaction of ethylene oxide (EO), propylene oxide (PO), or other cyclic ethers with compounds having one or more reactive hydrogens (i.e., a hydrogen atom bonded to nitrogen, sulfur, oxygen, phosphorus, etc.). This definition excludes materials

Saturated Polyester Resins - Kobe Polyurethane

Kobe Polyurethane has an annual production capacity of 10,000 tons of high quality & purity polyester polyol. With our experienced staff and modern production infrastructure we produce a wide range of polyester polyols with 500 - 2000 g / mol molecular weight, 2.0 - 2.8 functionalities that will fulfil all the demands of the different markets .

Polyols - Kimpur

Polyester polyols obtained by the reaction of various starting molecules such as adipic and phthalic with glycols such as diethylene glycol, monoethylene glycol and butanediol are used in the development of various products. Kimpur Polyester Polyols are specially produced to .

Difference Between Saturated and Unsaturated Polyester .

Aug 23, 2018 · The key difference between saturated and unsaturated polyester resin is that the saturated polyester resins have no double bonds in their main chain whereas the unsaturated polyester resins have double bonds in their main chain.. A polyester is a polymer compound that forms from the condensation reaction between a polyol and an acid. Therefore, we can categorize them as .

Unsaturated polyester | chemistry | Britannica

Unsaturated polyester, any of a group of thermosetting resins produced by dissolving a low-molecular-weight unsaturated polyester in a vinyl monomer and then copolymerizing the two to form a hard, durable plastic material. Unsaturated polyesters, usually strengthened by fibreglass or ground mineral, are made into structural parts such as boat hulls, pipes, and countertops.

Enzyme catalyzed polyesters and polyol polymers .

Apr 27, 2011 · The saturated and unsaturated polyester polyols described herein can be used to prepare urethanes and urethane acrylates. Where the polyester polyols are saturated, the reaction of a di- or polyisocyanate with the hydroxyl moiety in the polyester polyol forms a urethane. In this reaction, a chain extender, i.e. an amine, may be used.

Polyurethanes - Essential Chemical Industry

Soya bean oil contains triglycerides of long chain saturated and unsaturated carboxylic acids, which, after hydrogenation, can, on reaction with epoxypropane, form a mixture of polyols suitable for the manufacture of a wide range of polyurethanes. The use of these biopols means that at least part of the polymer is derived from renewable sources.

Polyester polyol turnkey solution on chemical machinery .

The whole set of resin plant includes reactor, vertical fractionating column, horizontal condenser, water storage tank, oil spill tank and piping (dilution kettle).All parts of the equipment that contact with the material are all made by stainless steel. Our company can provide users with engineering design, equipment model selection guide, equipment manufacturing, equipment installation and .

IPP's Polyols Plants for Sale - IPP

A polyol is an alcohol containing multiple hydroxyl groups. In two different technological disciplines the term "polyol" has a special meaning: food science and polymer chemistry. Sugar alcohols, a class of polyols, are commonly added to foods because of their lower caloric content than sugars; however, they are also, in general, less sweet, and are often combined with high-intensity sweeteners.

Polyether Polyols & Polyester Polyols - Nexant Training

Polyether Polyols & Polyester Polyols. There are two main classes of polyols used in polyurethanes: polyether polyols and polyester polyols. Although both polyether polyols and polyester polyols are used in coating, adhesive, sealant and elastomer applications (collectively referred to as CASE), polyether polyols are more often used in flexible foam, while polyester polyols are more commonly .

Synthesis of Biodegradable and Biocompostable Polyesters

Polyester polyols formation was confirmed by FTIR-ATR. Each sample posses two spectra, one is the spectrum of polyester polyol (blue colour), and the second one is spectrum of polyester polyol with MDI chain extender. Between polyesters polyols based on the same pair dicarboxylic acid/diol, no significance change was observed.

Synthesis and Characterization of Bio-Based Polyester Polyol

of reactor (L) VH [mgKOH /g polyol] VOH [mgKOH /g polyol] MW [g/mol] % Reflux of water Density . obtain saturated polyester polyols with high molecular weight. Polyesterification was

Tri-Rez™ Polyol

Tri-Rez™ Polyol 1030-35 is a non-crystalline low viscosity saturated linear polyester polyol designed for polyurethane based coatings, adhesives and foams. The hydrophobic flexible structure of Tri-Rez™ Polyol 1030-35 makes it an ideal polyol for formulating high solids and water-borne polyurethane resins.

Home []

Saturated Polyester. Saturated polyester polyols for casting elastomers and TPU; Saturated polyester polyols for flexible and rigid PU foams; Saturated polyester polyols for polyurethane system for footwear industry; Saturated polyester poluols for polyurethane adhesives; Saturated polyester polyols for polyurethane coating; Product customization

STEPANPOL® PC-1028P-210 | Stepan Company

STEPANPOL PC-1028P-210 is a solvent-free saturated polyester resin. This product is a room temperature liquid polyol yielding non-brittle, hard polyurethane coatings where good weatherability, aging and abrasion resistance are needed. Application. Polyurethane Coatings, Resins Manufacture. Chemical Description. LINEAR ALIPHATIC/AROMATIC .

Polyester polyol reactors (PET/PA) - H&S Anlagentechnik .

Polyols based on PET and PA are high-quality polyester polyols, which fit perfectly into the formulations for insulation foams, cast resins, sealants or adhesives. Application example. Spray foams. Reactor and peripheral equipment (Core unit) H&S reactors for generating polyols based on PET and PA can be supplied with batch capacity from 1t to 40t.

POLYETHER POLYOLS PRODUCTION Basis and Purpose .

polyether polyols manufacturing units (PMPU). Polyether polyols are defined as the products formed by the reaction of ethylene oxide (EO), propylene oxide (PO), or other cyclic ethers with compounds having one or more reactive hydrogens (i.e., a hydrogen atom bonded to nitrogen, sulfur, oxygen, phosphorus, etc.). This definition excludes materials

Polyols - an overview | ScienceDirect Topics

Polyols with different structures and reactivities can be used to tailor the thermo-mechanical and shape-memory properties of SMPUs (Goethals et al., 1998). Adding different types of polyols provides the SMPUs with various properties. The polyols are generally divided into two major types: polyether and polyester polyols (Chun et al., 2006).

Polyester Polyols: Synthesis and Characterization of .

Polyester Polyols: Synthesis and Characterization of Diethylene Glycol Terephthalate Oligomers OLEG KADKIN,1 KAROL OSAJDA,1,2 PIOTR KASZYNSKI,1 THOMAS A. BARBER3 1Organic Materials Research Group, Department of Chemistry, Vanderbilt University, Box 1822 Station B, Nashville, Tennessee 37235 2A visiting student from Wrocław University of Technology, Wrocław, 50-370 Poland

Liquid saturated polyesters - Perstorp

You can optimize high-performance liquid polyesters to a significantly lower environmental impact and lower your costs using our comprehensive and unique product portfolio and service offers. Providing you the freedom to innovate means we provide products and services to support you every step of the way from initial insights to market implementation.

Polyester resin - Wikipedia

Unsaturated polyester. Unsaturated polyesters are condensation polymers formed by the reaction of polyols (also known as polyhydric alcohols), organic compounds with multiple alcohol or hydroxy functional groups, with saturated or unsaturated dibasic acids. Typical polyols used are glycols such as ethylene glycol; acids used are phthalic acid, isophthalic acid and maleic acid.

FPO IP Research & Communities

Polyester polyols from terephthalic acid and oligoalkylene oxides Polyester polyols are produced by reacting terephthalic acid with a glycol corresponding to the formula H—(OCH2CH2)n—OH and an aliphatic dicarboxylic acid. These polyester polyols are particularly.

Polyester Polyols - an overview | ScienceDirect Topics

Polyols can be either polyether polyols or polyester polyols. Polyether polyols are made by the reaction of epoxides with compounds having active hydrogen atom. Polyester polyols are made by the polycondensation reaction of multifunctional carboxylic acids and polyhydroxyl compounds. They can be further categorized according to their end use.

How polyurethane is made - material, production process .

Polyester polyols may also be used as a reacting species in the production of polyurethanes. They can be obtained as a byproduct of terephthalic acid production. They are typically based on saturated aromatic carboxylic acids and diols. Branched polyester polyols .

Saturated Polyester Polyol - Etna Tec Limited LLC

Saturated Polyester Polyol. Etna Tec Limited, LLC is a high solids, oil-free polyester resin manufacturer for use in formulating industrial coatings. These polyester polyols are used to make high solids, low or zero VOC coatings. These specialty resins may be used in two part urethanes, melamine crosslinked baking systems and BPA free resin .

(PDF) Polyester coatings for corrosion protection

reaction setup for polyester preparation is shown in Fig. 9.3. KHA09.indd 168 KHA09.indd 168 4/23/2008 7:36:26 PM 4/23/2008 7:36:26 PM Polyester coatings for corrosion protection 169

US4311814A - Unsaturated polyester resin and process .

This invention relates to an unsaturated polyester resin containing from about 1.5 ×10 -3 to 1.5×10 -2 ether group per gram of resin and having a viscosity of from about 6 to 20 poise measured at 20° C. on a 60% by weight solution thereof in styrene, comprising the condensation reaction product of at least one dibasic acid or corresponding anhydride, at least one of which is a polyol and at .