Ether polysulfides and polyether polysulfides, their preparation and use
OwnerYang Cheng, Cynthia L. Rand +1inventors
InventorsYang Cheng, Cynthia L. Rand, John B. Cuthbert
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Abstract
Novel sulfur-containing compositions comprise a polyether polysulfide or an ether polysulfide. The polyether polysulfide may be based upon an alkoxylate (an alcohol or glycol-initiated compound) that is a copolymer of at least two of ethylene oxide, propylene oxide and butylene oxide. The polyether polysulfide may alternatively be based upon a homopolymer of ethylene oxide, propylene oxide or butylene oxide. The ether polysulfide may be based upon a methoxy-capped polyglycol or an alkyl ether of 1,3-dichloro-2-propanol.
Claims10
A polyether polysulfide represented by a formula as follows:
- R1—O—(C2H4O)m—(C3H6O)n—(C4H8O)o—R2—Sp—R2—(C4H8O)o—(C3H6O)n—(C2H4O)m—O—R1
- where R1 is hydrogen or an alkyl moiety containing from 1 to 18 carbon atoms, R2 is an alkyl moiety containing from 1 to 5 carbon atoms, m is 0 or an integer within a range of from 1 to 50, n is 0 or an integer within a range of from 1 to 10, o is 0 or an integer within a range of from 1 to 20 and p is an integer within a range of from 2 to 8, provided that where m is an integer within a range of from 1 to 50, n and o cannot both be 0.
A polyether polysulfide represented by a formula as follows:
- R1—O—(C2H4O)m—R2—Sp—R2—(C2H4O)m—O—R1
- where R1 is hydrogen or an alkyl moiety containing from 1 to 18 carbon atoms, R2 is an alkyl moiety containing from 3 to 5 carbon atoms, m is an integer within a range of from 1 to 50, and p is an integer within a range of from 2 to 8.
An ether polysulfide represented by a formula as follows:
- R3—O—R4
- where R3 is an linear or branched alkyl moiety containing from 3 to 18 carbon atoms, and R4 is at least one of a sulfur-containing alicyclic moiety that has 3 carbon atoms and from 1 to 5 sulfur atoms or a sulfur-containing aliphatic moiety that has 3 carbon atoms and from 1 sulfur atom to 5 sulfur atoms.
A sulfur-containing composition comprising a polyether polysulfide or an ether polysulfide based upon at least one of a) an alkoxylate which is an alcohol or glycol-initiated compound that is a copolymer of at least two of ethylene oxide, propylene oxide and butylene oxide or, with a requirement that a linking moiety between a sulfur atom and an alkoxylate contain 1 to 5 carbon atoms, a homopolymer of propylene oxide or butylene oxide, or, with a requirement that a linking moiety between a sulfur atom and an alkoxylate contain from 3 to 5 carbon atoms, a homopolymer of ethylene oxide, b) a polyglycol that is a copolymer of two or more of ethylene oxide, propylene oxide and butylene oxide or, with a requirement that a linking moiety between a sulfur atom and a polyglycol moiety contain 1 to 5 carbon atoms, a homopolymer of propylene oxide or butylene oxide, or, with a requirement that a linking moiety between a sulfur atom and an alkoxylate contain from 3 to 5 carbon atoms, a homopolymer of ethylene oxide, c) a methoxy-capped polyglycol, or d) an alkyl ether of 1,3-dichloro-2-propanol.
Dependencies are inferred from the claim text.