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AssigneeBASF SE
InventorsHans-Juergen Reese, Imbridt Murrar, Ralf Fritz, Andres Cabrera, Birgit Magg, Baerbel Guschel
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The invention relates to polyphenylenepolymethylene polyisocyanates (B) comprising (B1) the 2-ring product of polyphenylenepolymethylene polyisocyanate (B2) the 3-ring product of polyphenylenepolymethylene polyisocyanate (B3) the 4-ring product of polyphenylenepolymethylene polyisocyanate (B4) the 5-ring product of polyphenylenepolymethylene polyisocyanate, wherein the constituents (B2), (B3) and (B4) are, at a content of (B1) of up to 55% by weight, based on the weight of (B), present in a weight ratio of (B2):(B3):(B4) of 8±4:3.5±1.8:1.2±0.9 and the component (B) comprises at least 85% by weight, based on the weight of the component (B), of the constituents (B1), (B2), (B3) and (B4).
A polyphenylenepolymethylene polyisocyanate (B) comprising
The polyphenylenepolymethylene polyisocyanate according to claim 3, wherein the other compounds comprising isocyanate groups comprise uretonimines in an amount of not more than 11% by weight, based on the weight of the polyphenylenepolymethylene polyisocyanate (B).
The polyphenylenepolymethylene polyisocyanate according to claim 3, wherein the other compounds comprising isocyanate groups comprise uretonimines in an amount of not more than 6% by weight, based on the weight of the polyphenylenepolymethylene polyisocyanate (B).
The process according to claim 9, wherein the reaction is carried out in the presence of blowing agents.
The process according to claim 9, wherein the reaction is carried out in the presence of catalysts.
The process according to claim 12, wherein the component (B) is used in an at least three-fold stoichiometric excess in the reaction of the components (A) and (B).
The process according to claim 14, wherein the reaction of the components (A) and (B) is carried out at an index of from 100 to 220.
The process according to claim 14, wherein the reaction is carried out by the two-component process.
The process according to claim 17, wherein the reaction of the components (A) and (B) is carried out at an index of from 160 to 450.
Dependencies are inferred from the claim text.