摘要:
A polyester polyol, referred to hereinafter as a MHMS polyol comprises fatty acid based mer units wherein at least about 80 weight percent of the fatty acid based mer units are from methyl 9 (10) hydroxymethylstearate, or is prepared from an oil having fatty acids or fatty acid esters which are at least about 80 weight percent oleic acid or esters thereof and which has an average hydroxyl functionality of from 1.5 to 4. A reaction product, referred to herein after as MHMS alkoxysilane prepolymer, is produced from at least one such MHMS polyol and at least one isocyanate functional silane. The prepolymer is moisture cured to form a silylated MHMS polymer. The process of preparing a MHMS polyol comprises (A) reacting a fatty acid ester wherein at least about 80 weight percent of the fatty acid esters are methyl 9 (10) hydroxymethylstearate, or are prepared from an oil having fatty acids or fatty acid esters which are at least about 80 weight percent oleic acid or esters thereof with an initiator having at least 2 reactive groups selected from primary hydroxyl groups, amine groups, terminal isocyanate groups, terminal carbonyl groups or a combination thereof. The process of preparing at least one MHMS alkoxysilane prepolymer comprises steps of: (a) supplying at least one MHMS polyol; (b) supplying at least one isocyanate functional silane and (c) admixing the MHMS polyol and isocyanate functional silane or combination thereof, optionally in the presence of at least one catalyst to produce at least one MHMS alkoxysilane prepolymer. A process of preparing at least one silylated MHMS polymer comprises steps of: (a) supplying at least one MHMS alkoxysilane prepolymer; and (b) exposing it to moisture under conditions such that at least one silylated MHMS polymer is formed. Articles comprising the polyol, prepolymer, or polymer include elastomers, sealants, adhesives, coatings and the like.
摘要:
Flexible polyurethane foams are prepared by reacting a polyisocyanate with a high equivalent weight polyol. At least a portion of the high equivalent weight polyol is a polyester containing hydroxymethyl groups. The high equivalent weight polyol further includes species containing tertiary amine groups. The presence of tertiary amine-containing polyols in the formulation leads to improvements in resiliency, tensile and/or tear strength.
摘要:
Polyether polyols are initiated with aminocyclohexanealkylamines such as isophoronediamine and 1,8-diamino-p-menthane. The polyols are useful in making rigid polyurethane foams, especially foams for pour-in-place applications, where they give a good combination of low k-factor and short demold times.
摘要:
Polyether polyols are initiated with orthocyclohexanediamines such as 1,2-diaminocyclohexane. The polyols are useful in making rigid polyurethane foams, especially foams for pour-in-place applications, where they give a good combination of low k-factor and short demold times.
摘要:
Polyether polyols are initiated with orthocyclohexanediamines such as 1,2-diaminocyclohexane. The polyols are useful in making rigid polyurethane foams, especially foams for pour-in-place applications, where they give a good combination of low k-factor and short demold times.
摘要:
Polyether polyols are initiated with aminocyclohexanealkylamines such as isophoronediamine and 1,8-diaminop-menthane. The polyols are useful in making rigid polyurethane foams, especially foams for pour-in-place applications, where they give a good combination of low k-factor and short demold times.
摘要:
Polyether polyols are initiated with aminocyclohexanealkylamines such as isophoronediamine and 1,8-diaminop-menthane. The polyols are useful in making rigid polyurethane foams, especially foams for pour-in-place applications, where they give a good combination of low k-factor and short demold times.
摘要:
Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.
摘要:
A polyether NOP comprises at least two natural oil moieties separated by a molecular structure having at least about 19 ether groups or by a polyether molecular structure having an equivalent weight of at least about 480, said polyol referred to hereinafter as a polyether NOP. The polyether NOP is preferably prepared by a process comprising admixing at least one polyether initiator having an equivalent weight of at least about 480 or at least about 19 ether groups per active hydrogen group with at least one natural oil or derivative thereof under reaction conditions such that at least one polyether NOP is formed. The invention includes reaction products of the polyether NOP or combinations thereof, optionally and preferably in admixture with at least one other polyol which preferably includes at least one polyether polyol and at least one monomer reactive therewith, preferably at least one polyisocyanate to form a polyurethane, preferably in the form of a foam, especially a high resilience foam. The invention includes articles comprising at least one polyether NOP, at least one polymer thereof, or at least one foam thereof.
摘要:
A compound useful as a cocatalyst or cocatalyst component, especially for use as an addition polymerization catalyst compound, corresponding to the formula: (A*+a)b(Z*J*j)−cd, wherein: A* is a cation of from 1 to 80, preferably 1 to 60 atoms, not counting hydrogen atoms, said A* having a charge +a, Z* is an anion group of from 1 to 50, preferably 1 to 30 atoms, not counting hydrogen atoms, further containing two or more Lewis base sites; J* independently each occurrence is a Lewis acid of from 1 to 80, preferably 1 to 60 atoms, not counting hydrogen atoms, coordinated to at least one Lewis base site of Z*, and optionally two or more such J* groups may be joined together in a moiety having multiple Lewis acidic functionality, j is a number from 2 to 12 and a, b, c, and d are integers from 1 to 3, with the proviso that a×b is equal to c×d, and provided further that one or more of A*, Z* or J* comprises a hydroxyl group or a polar group containing quiescent reactive functionality.