A composition according to claim 1, wherein, in the formula R 3 S x M of the polysulfide used in step (2), R 3 represents an aliphatic radical having from 1 to 14 carbon atoms, an aliphatic radical having at least one hydroxyl group, an aromatic radical optionally substituted wtih at least one aliphatic radical having 6-14 carbon atoms or an ...
Petroleum Ether Aliphatic hydrocarbon mixture CAS No.: see synonyms Synonyms and CAS Numbers: naphtha 8002-05-9, VM&P naphtha 8032-32-4, rubber solvent 8030-30-6, Stoddard solvent 8052-41-3, petroleum thinner 64742-89-3. Other synonyms: Ligroin, mineral spirits, white spirits, safety solvent, SBP spirits, painter's n aphtha.
Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99( 1) European patent convention). Courier Press, Leamington Spa, England. -- PatentLens OCR page0002.txt 0025 272 Isocyanato-terminated polysulfide polymers and processes for their prepaL on.
This product can be used as vulcanizing agent for nature rubber, SBR, NBR and other unsaturated rubber. It can replace DTDM and reduce the generation of carcinogen nitrosamines. Its recommended dosage is 2-3 fractions. 5. Package, Storage and Transportation: Plastic bucket, 25kg/bucket. Stored in well-ventilated cool and dry area.
The chemical compatibility data can be presented in one of two ways. First, you can select a specific O-ring material to view its compatible chemicals. Or second, you can select a specific chemical to view all its compatible O-ring materials.
Epoxy, polysulfide and cyanoacrylate composites utilizing activatable amino-polyamide curatives Jan 21, 1994 - Rheox, Inc. The present invention relates to cured compositions useful as adhesives and sealants formed by dispersing an amine-terminated polyamide curative into a base to form a composite and activating the composite forming the cured ...
Learn about aliphatic hydrocarbons and discover where you can find these types of compounds in everyday life. Understand the definition and properties of aliphatic hydrocarbons.
As a specific example, reaction of a diglycidyl ether of a dihydroxyalkyl terminated sulfide or polysulfide with bisphenol A is a quantity to provide a 3:1 mole ratio of phenolic hydroxyl groups to epoxide groups yields the corresponding phenolic hydroxyl terminated adduct of the diglycidyl ether plus unreacted bisphenol A.
They have the formula R 2 S x. In this formula x indicates the number of sulfur atoms (or "rank"). Polysulfide polymers can be synthesized by condensation polymerization reactions between organic dihalides and alkali metal salts of polysulfide anions: n Na 2 S 5 + n ClCH 2 CH 2 Cl → [CH 2 CH 2 S 5] n + 2n NaCl
(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).
Technical Evaluation Report Lime Sulfur Crops December 3, 2014 Page 4 of 15 124 and some diseases, especially in fruiting trees. By the 1940s, however, lime sulfur had been largely replaced 125 by other synthetic pesticides. Lime sulfur usage has been stimulated more recently by the increase in
Aliphatic ether polysulfide (Vulcanizator VA-7) Chemical name: Aliphatic ether polysulfide Structural formula: Properties: It is yellow sticky liquid, with light thioalcohol odor. Specific gravity: 1.42-1.47. Viscosity: about 5-10 pa.s at 26.7 °C. Functions: VA-7 is vulcanizator for NR, SBR, NBR and other unsaturated rubber. It can easily ...
wherein x=1 to 8, R 1 is an aliphatic group or aliphatic ether group, R 2 =H or an aliphatic hydroxyl group, and n=1 to 60. In some embodiments of the prepolymer compositions, the polyfluoroether soft segments comprise a polymer selected from perfluoropolyether, fluorinated polyethers, or a combination thereof.
Aliphatic compounds can be saturated, joined by single bonds, or unsaturated, with double bonds or triple bonds . Besides hydrogen, other elements can be bound to the carbon chain, the most common being oxygen, nitrogen, sulfur, and chlorine. The least complex aliphatic compound is methane (CH 4). Properties
An epoxy resin adhesive, sealing or coating composition containing as a curing agent an addition product of A) at least one member of the group consisting of primary amines and secondary amines and B) at least one ester having a formula selected from the group consisting of ##STR1## wherein m is 0 or 1, n is an integer from 3 to 25, 0 is an integer from 1 to 20, p is an integer from 1 to 10, R ...
An aliphatic ether is an ether in the molecule of which there are no aryl groups on the ether group. eg: An ether molecule may contain aryl groups, nevertheless, be an aliphatic ether. eg: see also aromatic ether. Mastery Check
The polysulfides as claimed in claim 1, wherein the polysulfides comprise a mixture of two or more different polysulfides of the formula (I) with n=3, n=4, n=5 or n=6, where the sum total of the compounds with n=3, n=4, n=5 and n=6, based on the total amount of polysulfide compounds of the formula (I), is at least 80%, preferably at least 90% ...
An aliphatic compound is an organic compound containing carbon and hydrogen joined together in straight chains, branched chains, or non-aromatic rings. It is one of two broad classes of hydrocarbons, the other being aromatic compounds.
where R 1 is a divalent aliphatic or aromatic radical and n is a whole number from 1 to 5; and (b) a polyetherimide of the following formula: ##STR16## where a represents a whole number in excess of 1, the group ##STR17## is selected from: ##STR18## R' being hydrogen, lower alkyl or lower alkoxy, Z is a member of the class consisting of (1): ##STR19## and (2) divalent organic radicals of the ...
In conclusion, the straight-chain aliphatic ethers, sec-butyl ethyl ether (No. 1231) and 1-ethoxy-3-methyl-2-butene (No. 1232) may undergo O-dealkylation in vivo to yield the corresponding alcohol and aldehyde that subsequently undergo complete oxidation in the fatty acid pathway and tricarboxylic acid cycle. Alicyclic ethers principally ...
The molecular formula identifies each type of element by its chemical symbol and identifies the number of atoms of each element found in one discrete molecule of the substance. This information is only displayed if the substance is well–defined, its identity is not claimed confidential and there is sufficient information available in ECHA's ...
Aliphatic compound, any chemical compound belonging to the organic class in which the atoms are connected by single, double, or triple bonds to form nonaromatic structures. One of the major structural groups of organic molecules, the aliphatic compounds include the alkanes, alkenes, and alkynes and
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 Sn2-, in which n is a number from 3
An aliphatic compound is a compound containing carbon and hydrogen joined together in straight chains, branched trains or non-aromatic rings. These compounds are used as corrosion inhibitors. The hydrocarbons of the alkane, alkene and alkyne series are aliphatic compounds, as are fatty acids and many other compounds.
An aliphatic compound is a hydrocarbon compound containing carbon and hydrogen joined together in straight chains, branched trains or non-aromatic rings. Aliphatic compounds may be saturated (e.g., hexane and other alkanes) or unsaturated (e.g., hexene and other alkenes, as well as alkynes).
than glycidyl-ether type. Diglycidyl ether of bisphenol A (DGEBA), which is a condensation product of bisphenol A and epichlorohydrin, is primarily cured by aliphatic amines at room temperature, but is slowly cured by aromatic amines and requires thermal curing. Table 1 shows the properties and performances of
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