Formation of high-resilience urethane foam in the presence of morpholino-bearing polyalkylsiloxanes

Claim 1

A method for producing polyurethane foam which comprises reacting and foaming a reaction mixture containing (1) an organic polyol reactant comprising a polyether polyol having an average hydroxyl functionality from 2.1 to about 5 and an average primary hydroxyl content from about 35 to about 90 mole percent, based on the total moles of hydroxyl groups contained in the polyether polyol, (2) an organic polyisocyanate, (3) a tertiary-amine catalyst, (4) a blowing agent, and (5) a surfactant component comprising a morpholino-bearing polyalkylsiloxane consisting essentially of (a) monofunctional siloxy units, M°, the respective silicon atoms of which have two alkyls bonded thereto, the third silicon-bonded organic group being alkyl or Q where Q is morpholinoalkyl or morpholinoalkoxyalkyl, (b) an average of from about 0.5 to about 8 moles of difunctional dialkylsiloxy units for every two moles of M°, and (c) from zero up to an average of about 8 moles, for every two moles of M°, of difunctional monoalkylsiloxy units in which the second organic group bonded to silicon is Q where Q is as aforesaid, provided the said siloxanes contain an average of at least about 0.5 and no more than about 8 moles of said silicon-bonded Q groups for every two moles of M°; and wherein the silicon-bonded alkyls have from one to four carbon atoms and the silicon-bonded Q groups have the formula, ##STR21## where p is 0 or 1, Q being morpholinoalkyl when p is 0 and morpholinoalkoxyalkyl when p is 1, R' is bi-valent alkylene having from two or four carbon atoms, R" is bivalent alkylene having from two to six carbon atoms, and R 1 , R 2 , R 3 and R 4 are independently hydrogen or alkyl having from one to four carbon atoms.

Claim 2

A method for producing polyurethane foam which comprises reacting and foaming a reaction mixture containing (1) an organic polyol reactant comprising a polyether polyol having an average hydroxyl functionality from 2.1 to about 5 and an average primary hydroxyl content from about 35 to about 90 mole percent, based on the total moles of hydroxyl groups contained in the polyether polyol, (2) an organic polyisocyanate, (3) a tertiary-amine catalyst, (4) a blowing agent, and (5) a surfactant component comprising a morpholino-bearing polyalkylsiloxane consisting essentially of (a) monofunctional siloxy units, M°, the respective silicon atoms of which have two alkyls bonded thereto, the third silicon-bonded organic group being alkyl or Q where Q is morpholinoalkyl or morpholinoalkoxyalkyl, (b) an average of from about 0.5 to about 8 moles of difunctional dialkylsiloxy units for every two moles of M°, and (c) from zero up to an average of about 8 moles, for every two moles of M°, of difunctional monoalkylsiloxy units in which the second organic group bonded to silicon is Q where Q is as aforesaid, provided the said siloxanes contain an average of at least about 0.5 and no more than about 8 moles of said silicon-bonded Q groups for every two moles of M°; and wherein the silicon-bonded alkyls have from one to four carbon atoms and the silicon-bonded Q groups have the formula, ##STR21## where p is 0 or 1, Q being morpholinoalkyl when p is 0 and morpholinoalkoxyalkyl when p is 1, R' is bi-valent alkylene having from two or four carbon atoms, R" is bivalent alkylene having from two to six carbon atoms, and R 1 , R 2 , R 3 and R 4 are independently hydrogen or alkyl having from one to four carbon atoms.

Claim 14

A method for producing high resilience polyurethane foam which comprises reacting and foaming a reaction mixture containing: (1) an organic polyisocyanate; (2) an organic polyol reactant which is constituted of (a) from about 40 to about 80 weight percent of a polyether polyol having an average hydroxyl functionality from 2.1 to about 5 and an average primary hydroxyl content between about 35 and about 90 mole percent, based on the total moles of hydroxyl groups contained in said polyether polyol and (b) from about 60 to about 20 weight percent of a polymer/polyether polyol produced by the in situ polymerization of an ethylenically unsaturated monomer in a polyether polyol; (3) a blowing agent comprising water; (4) a tertiary-amine catalyst; and (5) about 0.03 to about 3 parts by weight per one hundred parts by weight of the polyol reactant of a surfactant component comprising a 3-(morpholino)propyl-polymethylsiloxane consisting essentially of (i) monofunctional siloxy units, M°, the unit formula of which is at least one of the group consisting of Me 3 SiO 1/2 and (Q)(Me) 2 SiO 1/2 , (ii) difunctional siloxy units, Me 2 SiO 2/2 , the mole ratio of Me 2 SiO 2/2 :M° having an average value from about 0.5:2 to about 8:2, and (iii) difunctional siloxy units, (Q)(Me)SiO 2/2 , the mole ratio of (Q)(Me)SiO 2/2 :M° being zero up to an average value of about 8:2, provided the average value of the mole ratio of Q:M° is at least about 0.5:2 and no more than about 8:2, wherein Me in each occurrence is methyl and Q in each occurrence is silicon-bonded ##STR22##

Claim 15

A method for producing high resilience polyurethane foam which comprises reacting and foaming a reaction mixture containing: (1) an organic polyisocyanate; (2) an organic polyol reactant which is constituted of (a) from about 40 to about 80 weight percent of a polyether polyol having an average hydroxyl functionality from 2.1 to about 5 and an average primary hydroxyl content between about 35 and about 90 mole percent, based on the total moles of hydroxyl groups contained in said polyether polyol and (b) from about 60 to about 20 weight percent of a polymer/polyether polyol produced by the in situ polymerization of an ethylenically unsaturated monomer in a polyether polyol; (3) a blowing agent comprising water; (4) a tertiary-amine catalyst; and (5) about 0.03 to about 3 parts by weight per one hundred parts by weight of the polyol reactant of a surfactant component comprising a 3-(morpholino)propyl-polymethylsiloxane consisting essentially of (i) monofunctional siloxy units, M°, the unit formula of which is at least one of the group consisting of Me 3 SiO 1/2 and (Q)(Me) 2 SiO 1/2 , (ii) difunctional siloxy units, Me 2 SiO 2/2 , the mole ratio of Me 2 SiO 2/2 :M° having an average value from about 0.5:2 to about 8:2, and (iii) difunctional siloxy units, (Q)(Me)SiO 2/2 , the mole ratio of (Q)(Me)SiO 2/2 :M° being zero up to an average value of about 8:2, provided the average value of the mole ratio of Q:M° is at least about 0.5:2 and no more than about 8:2, wherein Me in each occurrence is methyl and Q in each occurrence is silicon-bonded ##STR22##