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Polyurethane foams

Product Name
Polyurethane foams
CAS No.
9009-54-5
Chemical Name
Polyurethane foams
Synonyms
PU foam;Polyurethane foam;PU Resin;polyurethane polymer;Polyisocyanurate resins;Andur;Curene;Etheron;Pliogrip;Nci-C56451
CBNumber
CB1875782
Molecular Formula
C3H8N2O
Formula Weight
0
MOL File
Mol file
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Polyurethane foams Property

Stability:
Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference
9009-54-5
IARC
3 (Vol. 19, Sup 7) 1987
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

American Custom Chemicals Corporation
Product number
POL0000984
Product name
POLYURETHANE
Purity
95.00%
Packaging
5MG
Price
$503.46
Updated
2021/12/16
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Polyurethane foams Chemical Properties,Usage,Production

Chemical Properties

clear solid, white powder or milky suspension

Chemical Properties

Polyurethane foams are resistant to a wide range of solvents. In this respect, polyester foams are generally superior to polyether foams, particularly in resistance to dry cleaning solvents. Polyurethane foams are subject to degradation by aqueous acids and alkalis and steam. Ester, amide and urethane groups represent sites for hydrolytic attack. Since the ether group is not readily attacked, polyether foams are generally more resistant to hydrolysis than polyester foams.

Uses

Several isocyanates (tolylene diisocyanate, hexamethylene diisocyanate, dicyclohexylmethane diisocyanate, etc.) are used in preparing polyurethanes. All are lowviscosity liquids at room temperature with the exception of 4, 4- diphenylmethane diisocyanate (MDI), which is a crystalline solid. The aromatic isocyanates are more reactive than the aliphatic isocyanates and are widely used in urethane foams, coatings, and elastomers. The cyclic structure of aromatic and alicyclic isocyanates contributes to molecular stiffness in polyurethanes.

Uses

Flexible polyurethane foams are open-cell structures which are usually produced with densities in the range 24-48 kg/m3 (1.5-3Ib/ft3). The major interest in flexible foams is for upholstery applications and thus the loadcompression characteristics are of importance.

Uses

Prosthetic aid (internal bone splint).
Polyurethane resins and foams are two important industrial polymers. They can be produced as rigid, semirigid, or elastic foams or resins, which give PUR many versatile commercial uses. Polyurethane can be found in furniture, bedding material, automotive sealing material, adhesives, carpet, packaging material and coatings, and many other products. It is favored industrially because of its resistance to oil, light, and solvents, in addition to its strength and flexibility. These polymers are formed by polyaddition reactions between a diisocyanate and a polyhydroxyl compound, such as a polyol.

Preparation

Polyurethane foams are produced by forming a polyurethane polymer concurrently with a gas evolution process. Provided these two processes are balanced, bubbles of gas are trapped in the polymer matrix as it is formed and a cellular product results. The matching of the two reactions is essential for the formation of satisfactory foams. If the evolution of gas is too rapid, the foam initially rises well but then collapses because polymerization has not proceeded sufficiently to give a matrix strong enough to retain the gas. If polymerization is too fast, the foam does not rise adequately.
By selection of appropriate reactants, it is possible to prepare foams of varying degrees of cross-linking. Slightly cross-linked products are flexible whilst highly cross-linked products are rigid. Both flexible and rigid polyurethane foams are of commercial importance.

Production Methods

Castable polyurethane elastomers are fabricated from polyurethane prepolymers, which are obtained by reacting an excess of diisocyanate with high-molecular-weight diols. These NCO-terminated oligomers (prepolymers) are commercially available under a variety of trade names and in numerous types depending upon the types of diisocyanates and polyols that are used to synthesize them. The NCO content of these prepolymers can vary from less than 3% to as much as 20%. A cast polyurethane fabricator mixes these liquid prepolymers with approximately stoichiometric quantities of a curing agent (or a blend of curing agents) such as an appropriate low-molecular- weight diol or diamine.
Generally a prepolymer is heated to reduce its viscosity before mixing it with a liquid or a molten curing agent. The prepolymer curing agent blends have a limited working time (pot life) during which they are still liquid and can be poured into molds. The liquid prepolymer/curing agent blend is degassed and then poured into molds, which are often heated to expedite curing. After curing, the solid polyurethane elastomer articles are removed from the mold and are sometimes finished by keeping them at elevated temperature to complete the cure and to maximize mechanical properties.

brand name

Ostamer (Marion Merrell Dow).

Hazard

Evolves toxic fumes on ignition.

Safety Profile

Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits acrid toxic fumes of CNand NOx.

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Polyurethane foams Suppliers

Sino Polymer Co., Ltd.
Tel
021-64253377 13482132019
Email
13564143640@139.com
Country
China
ProdList
1
Advantage
58
BOC Sciences
Tel
16314854226
Email
info@bocsci.com
Country
United States
ProdList
24707
Advantage
65
Hubei Jusheng Technology Co.,Ltd
Tel
027-59599241 18871490274
Fax
027-59599241
Email
1400878000@qq.com
Country
China
ProdList
9824
Advantage
58
Chizhou Kailong Import and Export Trade Co., Ltd.
Tel
Please Email
Fax
-
Email
xg01_gj@163.com
Country
China
ProdList
9506
Advantage
50
Shanghai Orgchem Co.,Ltd.
Tel
+86-21-5877 1921
Fax
+86-21-5877 1925
Email
info@chemofchina.com
Country
China
ProdList
9665
Advantage
55
Hubei Xingyinhe Chemical Co., Ltd.
Tel
15308653513
Fax
027-63606400
Email
hubeixyh@qq.com
Country
China
ProdList
700
Advantage
58
Wuhan Jiyesheng Chemical Co., Ltd.
Tel
15827541030
Email
3109593928@qq.com
Country
China
ProdList
91
Advantage
58
Henan Alfa Chemical Co., Ltd
Tel
+8618339805032
Email
alfa4@alfachem.cn
Country
China
ProdList
14275
Advantage
58
Hefei TNJ Chemical Industry Co.,Ltd.
Tel
0551-65418671
Fax
0551-65418697
Email
sales@tnjchem.com
Country
CHINA
ProdList
34572
Advantage
58
Shijiazhuang Tongyang Import and Export Co., LTD
Tel
18031361688;
Email
admin@sjztongyang.com
Country
China
ProdList
987
Advantage
58
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View Lastest Price from Polyurethane foams manufacturers

Hebei Guanlang Biotechnology Co., Ltd.
Product
Polyurethane foams 9009-54-5
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2022-10-09
Shaanxi Dideu Medichem Co. Ltd
Product
Polyurethane foams 9009-54-5
Price
US $1.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20T
Release date
2020-04-22
Wuhan Monad Medicine Tech Co.,LTD
Product
Polyurethane 9009-54-5
Price
US $10.00/Kg/Bag
Min. Order
1Kg/Bag
Purity
99%min
Supply Ability
2000
Release date
2021-04-16

9009-54-5, Polyurethane foamsRelated Search:


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