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:
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:
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:
Sealant and potting formulations are provided which includes ungelled polymer(s) prepared from components including polyvinyl ether monomer(s) and polythiol material(s), the ungelled polymer being terminated with functional groups other than a thiol group; curing agent(s); and at least one additive selected from the group consisting of fillers, adhesion promoters, plasticizers and catalysts.
摘要:
Liquid polythioethers containing no oxygen in the polymeric backbone and a method for producing same which includes condensing an organic compound having primary mercaptan group with an organic compound having secondary hydroxyl group beta to a sulfur atom.
摘要:
A polythioether is provided of the formula wherein 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:
A curable sealant compound comprising: a polythiol; a cyclopolyene having a formula: where X is C1-5 aliphatic, Y is a C1-6 aliphatic, R2 is in each occurrence H, C1-C10 alkyl, C2-C10 alkenyl, Q—R3 where Q is O or S and R3 is C2-10 alkenyl, such that the cyclopolyene has non-conjugated carbon—carbon unsaturated bonds, and in formula (VII) there is one non-conjugated carbon—carbon unsaturated bond within the ring that is non-conjugated to other carbon—carbon unsaturated bonds; and an effective amount of a free radical catalyst.
摘要:
A uniformly premixed sealant is extruded into a packaging form and allowed to pressure equilibrate prior to freezing. Upon warming the sealant begins to cure. The storage of the preformed sealant formulation under cold conditions arrests the activity of cure catalysts and accelerators mixed therethrough. The sealant is readily extruded into a preform shape containing a lightweight filler. A release film is provided to avoid contact with the sealant preformed in a shape during application to a substrate.
摘要:
A polythioether comprising: wherein R1 is a C1-10 alkyl, —(R3Q)pR3— or C6-C20 aryl where Q is O or S, each R3 is independently C1-6 alkyl, and p is an integer between 0 and 6; R2 is C1-6 alkyloxy or C5-12 cycloalkyloxy, R4 is H, C1-6 alkyl, C1-6 alkyl alcohol and C0-6 alkyl substituted with where X is a halogen, m is an integer between 1 and 4, and n is an integer selected to yield a molecular weight for said polythioether of between 1000 and 10,000 Daltons.
摘要:
A uniformly premixed sealant is extruded into a packaging form and allowed to pressure equilibrate prior to freezing. Upon warming the sealant begins to cure. The storage of the preformed sealant formulation under cold conditions arrests the activity of cure catalysts and accelerators mixed therethrough. The sealant is readily extruded into a preform shape containing a lightweight filler. A release film is provided to avoid contact with the sealant preformed in a shape during application to a substrate.