摘要:
The present invention relates to a method for producing flexible polyurethane foams, wherein a polyol component which comprises polyricinoleic acid esters is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ≧10 kg/m3 to ≦150 kg/m3, preferably ≧20 kg/m3 to ≦70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ≧0.5 kPa to ≦20 kPa (at 40% deformation and 4th cycle). The polyricinoleic acid esters are obtainable by the reaction of ricinoleic acid with an alcohol component which comprises mono- and/or polyhydric alcohols with a molecular mass of ≧32 g/mol to ≦400 g/mol, the reaction being carried out at least in part in the presence of a catalyst.
摘要翻译:本发明涉及柔性聚氨酯泡沫的制造方法,其中使用包含聚亚油酸酯的多元醇组分作为起始物质。 根据本发明的柔性聚氨酯泡沫具有根据DIN EN ISO 3386-1-98的体积密度,范围> 10kg / m 3至@ 150kg / m 3,优选> = 20kg / m 3至@ 70kg / m3,并且一般来说,根据DIN EN ISO 3386-1-98的抗压强度在> = 0.5kPa至@ 20kPa(在40%变形和第四循环)的范围内。 聚蓖麻油酸酯可通过蓖麻油酸与醇组分的反应获得,所述醇组分包含分子量≥32g/ mol至@ 400g / mol的单醇和/或多元醇,该反应至少进行 部分是在催化剂的存在下。
摘要:
The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) is used which comprises polyether carbonate polyol, and to the isocyanate component itself. The invention also provides an NCO-terminated, urethane group-comprising prepolymer obtainable by reaction of one or more polyisocyanates (B1) with one or more polyether carbonate polyols.
摘要:
The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) which comprises fatty acid derivatives comprising hydroxyl groups is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ≧10 kg/m3 to ≦150 kg/m3, preferably ≧20 kg/m3 to ≦70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ≧0.5 kPa to ≦20 kPa (at 40% deformation and 4th cycle). The invention also provides an NCO-terminated prepolymer comprising urethane groups obtainable by reaction of one or more polyisocyanates (B1) with one or more fatty acid derivatives comprising hydroxyl groups (B2).
摘要:
The present invention relates to a process for the production of polyurethane foams from A1 compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 400 to 15,000, A2 optionally compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 62 to 399, A3 water and/or physical foaming agents, A4 optionally auxiliary substances and additives, A5 compounds having at least one semicarbazide group, and B di- or poly-isocyanates which yields polyurethane foams with reduced formaldehyde emission and wherein the activity of the raw material mixture is not substantially affected and wherein the mechanical properties of the resulting foam (in particular compression set and ageing behaviour under humid conditions) are not adversely affected.
摘要:
Compounds of the general formula ##STR1## in which n represents an integer from 2 to 6, preferably 2 or 3,m represents an integer from 1 to 6, preferably 1 to 3,R represents --C(CH.sub.3).sub.3 andX represents hydrogen or the group ##STR2## are used as core discoloration preventing agents in a process for the production of isocyanate-based foams.
摘要:
The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) which comprises fatty acid derivatives comprising hydroxyl groups is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ≧10 kg/m3 to ≦150 kg/m3, preferably ≧20 kg/m3 to ≦70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ≧0.5 kPa to ≦20 kPa (at 40% deformation and 4th cycle). The invention also provides an NCO-terminated prepolymer comprising urethane groups obtainable by reaction of one or more polyisocyanates (B1) with one or more fatty acid derivatives comprising hydroxyl groups (B2).
摘要翻译:本发明涉及柔性聚氨酯泡沫的制造方法,其中使用包含羟基的脂肪酸衍生物的异氰酸酯成分(B成分)作为原料。 根据本发明的柔性聚氨酯泡沫具有根据DIN EN ISO 3386-1-98的体积密度,范围> 10kg / m 3至@ 150kg / m 3,优选> = 20kg / m 3至@ 70kg / m3,并且一般来说,根据DIN EN ISO 3386-1-98的抗压强度在> = 0.5kPa至@ 20kPa(在40%变形和第四循环)的范围内。 本发明还提供了包含可通过一种或多种多异氰酸酯(B1)与一种或多种包含羟基(B2)的脂肪酸衍生物反应获得的氨基甲酸酯基团的NCO封端的预聚物。
摘要:
A soft, flexible foam characterized in having (i) a hardness, IFD 25% value, of at most 29 lbs/50 in.sup.2, as determined in accordance with Test B.sub.1 of ASTM D 3574 and (ii) a density of about 0.9 to 3.0. pounds per cubic foot is disclosed. Accordingly, the foam is prepared by reacting an organic polyisocyanate with a polyol in the presence of a catalyst and water and a compound conforming to ##STR1## where A is selected from among H, COOH, NH.sub.2, and OH, M is a counter ion, andwhere n, x and m are selected such that said compound has a number average molecular weight of about 500 to 20,000, a functionality of 0 to 10 and a sulfonate concentration of about 0.1 to 30 percent by weight.
摘要:
The present invention relates to a process for the preparation of polyurethane foams in which polyisocyanates are reacted with compounds having a molecular weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms, in the presence of water and/or organic blowing agents, catalysts, melamine as a flameproofing agent, and other flameproofing agents selected from phosphonic acid esters having the general formula ##STR1## wherein R.sup.1 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 unsaturated alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.7 14 C.sub.15 aralkyl, or C.sub.6 -C.sub.12 aryl, R.sup.2 and R.sup.3 are independently C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 unsaturated alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.7 -C.sub.15 aralkyl, or C.sub.6 -C.sub.12 aryl, or R.sup.2 and R.sup.3 together are C.sub.2 -C.sub.4 alkylene, R.sup.4 is C.sub.1 -C.sub.6 alkylene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.7 -C.sub.15 aralkylene, or C.sub.6 -C.sub.12 arylene, R.sup.5 is C.sub.2 -C.sub.6 alkylene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.7 -C.sub.15 aralkylene, or C.sub.6 -C.sub.12 arylene, and n is an integer of from 1 to about 100.The process is optionally carried out in the presence of compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight of from 32 to 399, and known surface-active additives and auxiliaries.
摘要:
The present invention relates to a process for the preparation of polyurethane foams comprising reacting polyisocyanates with compounds having a molecular weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms, in the presence of water and/or organic blowing agents, catalysts, melamine having a particle size of from about 5 to about 90 micrometers as a flameproofing agent. The process is optionally carried out in the presence of other flameproofing agents, compounds containing at least two isocyanate-reactive hydrogen atoms and having a molecular weight of from 32 to 399, and known surface-active additives and auxiliaries.
摘要:
A process is described for the preparation of stable, agglomerate-free, low-viscosity graft copolymer dispersions by the free-radical polymerization of olefinic monomers, such as styrene and/or acrylonitrile, with polyol compounds in the presence of a hydroxyl compound modified with castor oil. The use of these graft copolymer dispersions in the manufacture of polyurethane plastics, particularly flexible foams, by the isocyanate polyaddition process is also described.