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US4455410A

US4455410A US06/359,257 US35925782A US4455410A US 4455410 A US4455410 A US 4455410A US 35925782 A US35925782 A US 35925782A US 4455410 A US4455410 A US 4455410A Authority US United States Prior art keywords radicals polysulfide polyetherimide formula divalent Prior art date 1982-03-18 Legal status (The legal status is an assumption and is not a legal conclusion.

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DIGLYCOLAMINE AGENT (DGA)

DIGLYCOLAMINE AGENT (DGA) Brand of 2-(2-Aminoethoxy)Ethanol. DGA agentis essentially colorless, slightly viscous liquid with a mild amine odor. DGA is miscible with water, alcohols, and aromatic hydrocarbons, but relatively immiscible with aliphatic hydrocarbons and ethyl ether. Isometric with diethanolamine; however, the primary H

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Coating Crosslinking Reactions Using Cycloaliphatic Epoxides

Oct 13, 2000In Table 1, the physical properties of several common commercial epoxides — cycloaliphatic, glycidyl ether and aliphatic — are compared. In addition to physical properties, chemical reactivity of the epoxide group is a key parameter in determining

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Common Chemistry

68439-49-6:Unspecified, Alcohols, C16-18, ethoxylated, (C16-C18) Alkyl alcohol ethoxylate, (C16-C18) Fatty alcohol, ethylene oxide reaction product, (C16-C18)Alkyl alcohol ethoxylate, (C16-C18)Alkyl alcohol, ethoxylate, Alcohols C16-18, ethoxylated, Alcohols, C16-18, ethoxylated, Alcools en C16-18 ethoxyles, Alfonic 1618-46, Alfonic 1618-60, Alfonic 1618-62, Alfonic 1618-78, Alfonic 1618-80

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The Chemistry of Polyurethane Coatings

Diphenylmethane 2, 4' - Diisocyanate Bayer also supplies an isomer mixture of MDI containing 55% 2,4' isomer shown in Figure 5, and 45% of the 4, 4' isomer shown in Figure 4 under the trademark Mondur ML. The isomer mixture allows this product to maintain a liquid supply form. Figure 6 Diphenylmethane 2, 4' - Diisocyanate CH 3 CH 3 NCO OCN NCO NCO

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Purchased products

1,2 dimethylimidazole 1,3 butanediol 1,4 butanediol 1,6 hexanediol 2, 5-dimethyl-2,5-di-(t-butylperoxy)hexane 2,2-(1,2-ethenediyl)bis(4,1-phenylene)bisbenzoazol 2,5 di-45-oms 2-bromo-2-nitropropane-1, 3 diol 2-chloro-butane 2-ethyl hexanoic acid 2-ethyl hexanol 2-hydroxy- 5-methylphenol-benzatriazole 5-ssipa. a ac polyethylene wax acetic acid

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Polymer Additives and Plasticizers

1103 1,3-propanediene,n,n-1,2-ethanediylbis-polymer with 2,4,6-trichloro-1 1195 1,6-hexamethylene bis-(3,5-di-tert-butyl-4-hydroxyhydrocinnamate) 1663 1,7,7-trimcthylbicyclo(2.2.1)hepta n-2-one 998 1,8-dithiophenylanthraquine 451 1-hexadecanol 804 1-propanaminium, n-(2-hydroxyethyl)-n,n-dimethyl-3-((1-oxooctadecyl) 1667 1.2.3-triphenylguanidine

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Ether

'The animals were anesthetized with diethyl ether, and their abdomens were opened by a midline incision.' 'Although ether was once a popular anesthesia agent, its use is now strongly discouraged.' 'To knock someone out, ether would have to be applied in a highly concentrated form (such as an ether

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Polysulfide Rubber

(also polysulfide elastomer; Thi-okol), a synthetic rubber that is a product of the polycondensation of dihalides of aliphatic compounds (for example, ethylene dichloride or propyl dichloride) with polysulfides of alkali metals (for example, Na 2 S x, where x = 2–4).

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Hydrocarbons

CH 2 =CH 2 + H 2 → metal catalyst CH 3 CH 3 By far the most common reaction of hydrocarbons is combustion, which is the combination of a hydrocarbon with O 2 to make CO 2 and H 2 O. The combustion of hydrocarbons is accompanied by a release of energy and is a primary source of energy production in our society ( Figure 16.2 Combustion ).

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Hydrocarbons, Aliphatic Saturated

Compounds in this group are characterized by straight or branched carbon chains with the generic formula C(n)H(2n+2), which means that the compound contains only single bonds between the carbon atoms and contain the maximum possible number of hydrogen atoms per carbon atom. If there is even one carbon-carbon double

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Liquid Polysulfide Polymers for Chemical

Aug 08, 2018Liquid polysulfide polymers were re-discovered in 1926 by Joseph C. Patrick and Nathan Mnookin when they were trying to react a,v-alkyl halides with inorganic polysulfides (e.g., Na 2 Sx, x = 4-6). The inventors created high-molecular-weight rubbers with outstanding chemical resistance against solvents, gasoline, ultraviolet (UV) light and ozone.

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Introduction, nomenclature, classification, isomerism in ether

Ethers are known as simple or symmetrical, if the two alkyl or aryl groups attached to the oxygen atom are same. Example: C 2 H 5 - O - C 2 H 5 is called diethyl ether and is a simple ether.. Ethers are known as mixed or unsymmetrical if the two groups attached to the oxygen atom are different.

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Hydrocarbon: Types and Importance

Mar 01, 2016Ethers: Organic compounds in which -0- functional group is present are called ethers. General formula of family's members is (C n H 2n+l) 2 0. The compounds like dimethyl ether, diethyl ether etc are examples of ethers. Diethyl ether is used in the form anaesthesia and it is also called ether only.

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US EPA

The chemical structure and properties are presented below in Tables 2 and 3. Table 2. Nomenclature for Methyl Esters of Fatty Acids Chemical structure O O CH 3 CH 3 Common name Aliphatic Esters, Fatty Acids Methyl Esters (FAME) Molecular formula CH3(CH2)nCOOCH3 Molecular weight 158.24

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thiolkol;polysulfide rubber,physical properties,suppliers

Yes aliphatic hydrocarbons, ethers the two halogen derivatives or a mixture of them and alkali metals, alkali metal sulfide over the polymer. Repeat with each module 2-4 sulfur atoms straight chain. According to materials used and the proportion of them will be different, the resilience of the access block, powdered or liquid paste-like material.

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US Patent Application for Novel process for preparation of

Oct 04, 2004The process of claim 5, wherein said aliphatic cyclic ether is selected from the group consisting of: dioxane; and tetrahydrofuran. 11. A product comprising clopidrel bisulfate Form I made by the process of claim 1. 12. A product comprising clopidrel bisulfate Form

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Ch 2 : Isomers answers

Ans 2 : The molecular formula of C 5 H 10 contains 2 less H atoms than pentane (C 5 H 12) so that it must contain either a double bond or one ring. Therefore in terms of functional groups we need to consider alkenes and cycloalkanes. Ans 3 : The molecular formula of C 3 H 6 O contains 2 less H atoms than propane (C 3 H 8)

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Curing Agents for Epoxy Resin

Amines are classified into aliphatic, alicyclic (Three Bond 2106), and aromatic amines according to the types of hydrocarbons involved, and the all are important curing agents for epoxy resin. Aliphatic amine (Three Bond 2103) is curing. agent for epoxy resin ant able to cure at room temperature.

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two part epoxy chemical resistance table

Barium Hydroxide 3 3 2 Butyl Ether 3 3 2 Barium Nitrate 3 3 2 Butyl Phthalate 3 3 2 Barium Sulfate 3 3 2 Butylene 3 3 2 Barium Sulfide 4 4 2 Calcium Bisulfite 3 3 2 Beer 2 2 2 Calcium Carbonate 2 2 1 Beet Sugar Liquids 3 3 2 Calcium Chloride 2 2 2 Beet Sugar Liquors 3 3 2 Calcium Hydroxide 30% 3 3 2 Benzaldehyde 3 3 2 Calcium Hypochlorite 3 3 2

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「aliphatic ether」にしたのとい(3ページ)

The method for producing a poly(2,6-diarylphenylene ether) comprises the polymerization reaction of a phenol derivative in a mixed solvent comprising an aliphatic alcohol and a ketone or ether-type organic solvent in the presence of a catalyst and oxygen, thereby precipitating the produced polymer, wherein polymers having different molecular weights are precipitated by varying the composition and/or mixing

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IUPAC Rules

If there is more than one -CHO group, the suffix is expanded to include a prefix that indicates the number of -CHO groups present (-anedial - there should not be more than 2 of these groups on the parent chain as they must occur at the ends). It is not necessary to indicate the position of the -CHO group because this group will be at the end of

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Difference Between Diethyl Ether and Petroleum Ether

Jun 26, 2019Diethyl Ether is also known as the ether as it is the pure organic liquid with having an oxygen atom with carbons on either sides. The chemical and molecular formula of diethyl ether are CH3CH2OCH2CH3 and C 4 H 10 O respectively. Diethyl ether is a colorless, highly volatile flammable pure organic liquid that is most prominently used as solvent in the laboratories and also as a starting

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Stainlez Inc. Chemical Resistance Chart

Stainlez Inc. Chemical Resistance Chart A No known effect B Some effect, evaluate with caution 2-Butoxyethanol, pure - Ether, Aliphatic, Alcohol D D D D D D D 2-Mercaptoethanol, pure - Alcohol, Aliphatic, Mercaptan D D D D D D D Ammonium Polysulfide D

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Functional Group Names, Properties, and Reactions

In organic chemistry, the most common functional groups are carbonyls (C=O), alcohols (-OH), carboxylic acids (CO 2 H), esters (CO 2 R), and amines (NH 2 ). It is important to be able to recognize the functional groups and the physical and chemical properties that they afford compounds.

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Polysulfides

Polysulfide rubber is a synthetic rubber that is a product of the polycondensation of dihalides of aliphatic compounds (e.g., ethylene dichloride or propyl dichloride) with polysulfides of alkali metals (e.g., Na 2 S x, where x=2–4). Polysulfide rubbers are divided into polytetrasulfides and polydisulfides, with the general formulas [–R–S

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Polysulfide

Polysulfide, any member of a class of chemical compounds containing one or more groups of atoms of the element sulfur linked together by covalent bonds. In inorganic compounds belonging to this class, these groups are present as ions having the general formula S n 2-, in which n is a number from 3 to 10 or more; these compounds usually are prepared by dissolving sulfur in solutions containing the sulfide ion, S 2 - .

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Properties of Polyether

Polyglycols, also called polyether glycols or polyols, are chemical compounds with the general formula HO[-(CH 2) m O-] n-(CH 2) m-OH. They are viscose liquids or waxy solids depending on molecular weight and hydroxyl content due to the weak intermolecular attractive forces (low polarity).

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Polyester Vs. Polyether: What's the Difference?

Polyester Vs Polyether: What's the Difference? There are two main types of polyurethane: polyester and polyether.Both are highly effective in a diverse range of industries.Polyester urethane and polyether urethane are elastomers, meaning that they possess elastic properties, and both offer unique performance properties.

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18.2: Names and Properties of Ethers

Ethers are compounds having two alkyl or aryl groups bonded to an oxygen atom, as in the formula R 1 –O–R 2. The ether functional group does not have a characteristic IUPAC nomenclature suffix, so it is necessary to designate it as a substituent.

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