摘要:
Thiol-/En-Zusammensetzungen bei denen mindestens eine Komponente ein bei Raumtemperatur flüssiges Polymer mit mindestens zwei nicht konjugierten olefinischen Doppelbindungen pro Molekül aufweist und mindestens eine Härterkomponente auf der Basis von organischen Verbindungen mit mindestens zwei Mercaptogruppen pro Molekül lassen sich durch metallorganische Verbindungen in ihrer Reaktion beschleunigen. Die Topfzeit läßt sich in weiten Grenzen durch Einsatz von Reaktionsverzögerern den Anwendungsbedingungen anpassen.
摘要:
Coating composition and its use in a one-pot system. The coating composition comprises: an oxidatively drying polyunsaturated condensation product, such as an alkyd, having pendant groups in an amount of more than 20 % by weight of the condensation product, the pendant groups comprising unsaturated CC bonds; a polythiol having two or more SH-groups; a siccative. The equivalence ratio of thiol functional groups to unsaturated CC bonds being less than 0,3, preferably between 0,01 and 0,25. The coating composition comprises 1 - 30 wt-%, preferably 3 - 20 wt-%, of thiol compounds, related to the total weight of solid resin. The coating composition further comprises a drying accelerating complexing agent, preferably 2,2'-bipyridyl or 1,10-phenantroline.
摘要:
Sealant and potting formulations are provided which are prepared from components including ungelled mercapto-terminated polymer(s) prepared by reacting reactants comprising polyvinyl ether monomer(s) and polythiol material(s); curing agent(s) reactive with a mercapto group of the mercapto-terminated polymer; and additive(s) selected from the group consisting of fillers, adhesion promoters, plasticizers and catalysts.
摘要:
A polythioether is provided of the formulawherein R1 is H, C1-6 alkyl, C1-6 alkyl alcohol, C1-6 alkyl substituted with at least one of:-NHR5 wherein R5 is a C1-6 alkyl, R2 is C2-6 alkyl, C6-8 cycloalkyl, C6-10 alkylcycloalkyl, -[-(CH2)r-Q-]s-(CH2)t-, or C1-2 alkyl substituted forms thereof, wherein r is an integer value from 2 to 8, Q is a heteroatom selected from the group consisting of: O, S, -NH- and -NCH3-, s is an integer value from 1 to 5, and t is an integer value from 2 to 10, R3 is H or C1-4 alkyl, R4 is -CH2- or R2, M is a C1-10 alkyl, C6-20 aryl, C6-20 aryl substituted with at least one C1-8 alkyl group, or a N or O heteroatom, Y is C2-20 alkyl, C6-20 cycloalkyl, C6-10 alkylcycloalkyl, or -[-(CH2)r-Q-]s(-CH2-)t-, n is an integer value from 1 to 60, m is an integer value from 1 to 60, and p is an integer value from 1 to 10, wherein the polythioether has a viscosity at 20° C. of less than 1000 poise.
摘要:
Coating composition and its use in a one-pot system. The coating composition comprises: an oxidatively drying polyunsaturated condensation product, such as an alkyd, having pendant groups in an amount of more than 20 % by weight of the condensation product, the pendant groups comprising unsaturated CC bonds; a polythiol having two or more SH-groups; a siccative. The equivalence ratio of thiol functional groups to unsaturated CC bonds being less than 0,3, preferably between 0,01 and 0,25. The coating composition comprises 1 - 30 wt-%, preferably 3 - 20 wt-%, of thiol compounds, related to the total weight of solid resin. The coating composition further comprises a drying accelerating complexing agent, preferably 2,2'-bipyridyl or 1,10-phenantroline.
摘要:
In one aspect, the invention provides ene-thiol elastomers comprising the reaction product of a polythiol free of hydrophilic groups and having at least two thiol groups and an aromatic, heterocyclic, aliphatic, or cycloaliphatic polyene having at least two reactive unsaturated carbon to carbon bonds. In another aspect, the invention provides ene-thiol elastomer comprising the reaction product of (a) a thiol terminated oligomer comprising the reaction product of a polythiol having two thiol groups and a first polyene or mixture of polyenes having two reactive unsaturated carbon to carbon bonds; and (b) a second polyene or a mixture of polyenes having at least 5 percent functional equivalents of unsaturated carbon to carbon bonds from polyenes having at least three unsaturated carbon to carbon bonds. The ene-thiol elastomers of the invention have a weight increase of not more than 4 weight percent in 15 days at a temperature of 22 °C when immersed in a solution of 96 parts by weight water and 4 parts by weight n-butanol and/or a water vapor transmission rate of less than 50 g-mm/m2-day at 40 °C according to ASTM D814.
摘要:
A polythioether has formula: R1-[-R2-S—CH(CH¿3?)—S-]n-R?2—R1¿, wherein R1 denotes a thiol group, a hydroxyl group, an unsubstituted amine group, a monoalkyl-substituted amine group, a monovalent radical substituted with at least one hydroxyl group, unsubstituted amine group or monoalkyl-substituted amine group, or a group that is non-reactive in the presence of an acid catalyst, R2 denotes a divalent radical, and n is an integer from 1 to 60. The polythioether is a liquid at room temperature and pressure.
摘要:
A polythioether includes a structure having the formula (I): -R1-[-S-(CH¿2?)2-O-[-R?2-O-]¿m-(CH2)2-S-R1-]n-, wherein R1 denotes a C¿2-6? n-alkylene, C3-6 branched alkylene, C6-8 cycloalkylene or C6-10 alkylcycloalkylene group, -[(-CH2-)p-X-]q-(-CH2-)r-, or -[(-CH2-)p-X-]q-(-CH2-)r- in which at least one -CH2- unit is substituted with a methyl group, R?2¿ denotes a C¿2-6? n-alkylene, C2-6 branched alkylene, C6-8 cycloalkylene or C6-10 alkylcycloalkylene group, or -[(-CH2-)p-X-]q-(-CH2-)r-, X denotes one selected from the group consisting of O, S and -NR?6, R6¿ denotes H or methyl, m is a rational number from 0 to 10, n is an integer from 1 to 60, p is an integer from 2 to 6, q is an integer from 0 to 5, and r is an integer from 2 to 10. The polythioether is a liquid at room temperature and pressure.
摘要:
The invention provides optical parts having good impact resistance, good adhesiveness between the substrate and a thin film layer formed thereon, good scratch resistance and good antireflection capabilities. A coating composition comprising at least one selected from dithian ring skeleton-having sulfur compounds of a general formula (1): wherein n is an integer of from 1 to 3, and benzene ring-having sulfur compounds of a general formula (2): wherein m is 0 or 1, and a polyfunctional thiol is applied onto the surface of a plastic substrate to form thereon a thin film layer.
摘要:
A polythioether includes a structure having the formula (I): -R1-[-S-(CH¿2?)2-O-[-R?2-O-]¿m-(CH2)2-S-R1-]n-, wherein R1 denotes a C¿2-6? n-alkylene, C3-6 branched alkylene, C6-8 cycloalkylene or C6-10 alkylcycloalkylene group, -[(-CH2-)p-X-]q-(-CH2-)r-, or -[(-CH2-)p-X-]q-(-CH2-)r- in which at least one -CH2- unit is substituted with a methyl group, R?2¿ denotes a C¿2-6? n-alkylene, C2-6 branched alkylene, C6-8 cycloalkylene or C6-10 alkylcycloalkylene group, or -[(-CH2-)p-X-]q-(-CH2-)r-, X denotes one selected from the group consisting of O, S and -NR?6, R6¿ denotes H or methyl, m is a rational number from 0 to 10, n is an integer from 1 to 60, p is an integer from 2 to 6, q is an integer from 0 to 5, and r is an integer from 2 to 10. The polythioether is a liquid at room temperature and pressure.