摘要:
Elastomeric material having a density of more than 100 kg/m3 and comprising a matrix material comprising a plurality of urethane, urea and/or isocyanurate groups and having a hardblock content of more than 50% (hereinafter called matrix A); and a polymeric material which 1) has no groups which are able to form a urethane, urea or isocyanurate group with an isocyanate group, 2) is interpenetrating said matrix A, and 3) is the reaction product of a polyisocyanate and a polymer having an average molecular weight of more than 500 and one isocyanate-reactive group at an isocyanate index of 100-250 (hereinafter called polymeric material B); and wherein the relative amount of all ingredients used to make said matrix A and of said polymeric material B, on a weight basis, ranges from 10:90 to 90:10 and process for making such materials.
摘要翻译:密度大于100kg / m 3的弹性体材料,其包含多个氨基甲酸酯,脲和/或异氰脲酸酯基,并且具有大于50%的硬嵌段含量的基体材料(以下称为基体A); 和1)不具有能够与异氰酸酯基形成氨基甲酸酯,脲或异氰脲酸酯基的基团的聚合物材料,2)互穿所述基质A,和3)是多异氰酸酯和具有 平均分子量大于500,异氰酸酯指数为100-250的异氰酸酯反应性基团(以下称为聚合材料B); 并且其中用于制备所述基质A和所述聚合物材料B的所有成分的重量的相对量为10:90至90:10,并且用于制备这种材料的方法。
摘要:
Foamed material having a density of less than 100 kg/m3 and comprising a matrix material comprising a plurality of urea groups and having a hardblock content of more than 50% (hereinafter called matrix A); and a polymeric material which 1) has no groups which are able to form a urethane, urea or isocyanurate group with an isocyanate group, 2) is interpenetrating said matrix A, and 3) is a polymer having an average molecular weight of more than 500 which polymer comprises at least 50% by weight of oxyethylene groups based on the weight of this polymer (hereinafter called polymeric material B); and wherein the relative amount of all ingredients used to make said matrix A and of said polymeric material B, on a weight basis, ranges from 10:90 to 70:30 and process for making such materials.
摘要翻译:具有小于100kg / m 3的密度的发泡材料,并且包含包含多个脲基并且具有大于50%的硬嵌段含量的基质材料(以下称为基质A); 和1)不具有能够与异氰酸酯基形成氨基甲酸酯,脲或异氰脲酸酯基的基团的聚合物材料,2)互穿所述基质A,和3)是平均分子量大于500的聚合物 该聚合物包含至少50重量%的基于该聚合物重量的氧化乙烯基团(以下称为聚合物材料B); 并且其中用于制备所述基质A和所述聚合物材料B的所有成分的相对量以重量为基准在10:90至70:30的范围内以及制备这种材料的方法。
摘要:
Process for preparing a composition by reacting a polyisocyanate, a monoalkoxy polyoxyalkylene monoamine and water. The composition and its use in making cellular products are claimed as well.
摘要:
A polyisocyanate-based elastomer having a ratio of the storage modulus (E′) at 20° C. and the storage modulus (E′) at 120° C. of between 0.75 and 1.5, a tan δ at 100° C. of less than 0.1 and a maximum value of the tan δ of more than 0.8, the tan δ being the ratio of the loss modulus (E″) and the storage modulus (E′).
摘要:
Process for preparing a polyurethane elastomer having an apparent overall density of more than 150 kg/m3 comprising reacting a polyisocyanate and an isocyanate-reactive composition, optionally in the presence of water, wherein the reaction is conducted at an isocyanate index of 85 to 120, the polyisocyanate comprising: a) 80-100% by weight of a diphenylmethane diisocyanate comprising at least 40% by weight of 4,4′-diphenylmethane diisocyanate and/or a derivative of said diphenylmethane diisocyanate which derivative is liquid at 25° C. and has an NCO value of at least 20% by weight, and b) 20-0% by weight of another polyisocyanate, and wherein the isocyanate-reactive composition comprises a) 80-100% by weight of a polyether polyol having an average nominal functionality of 2-8, an average equivalent weight of 750-5000, an average molecular weight of 2000-12000, an oxyethylene content of 60-90% by weight and a primary hydroxyl content of 70-100% calculated on the total number of primary and secondary hydroxyl groups in the polyol, b) an isocyanate-reactive chain extender in an amount such that the hard block ratio is less than 0.50 and c) 20-0% by weight of one or more other isocyanate-reactive compounds excluding water, the amount of polyol a) and isocyanate-reactive compound c) being calculated on the total amount of this polyol a) and compound c).
摘要翻译:制备具有超过150kg / m 3的表观总密度的聚氨酯弹性体的方法,包括任选在水存在下使多异氰酸酯和异氰酸酯反应性组合物反应,其中反应在 异氰酸酯指数为85至120,多异氰酸酯包含:a)80-100重量%的二苯基甲烷二异氰酸酯,其包含至少40重量%的4,4'-二苯基甲烷二异氰酸酯和/或所述二苯基甲烷二异氰酸酯的衍生物,其衍生物 在25℃下是液体,并且具有至少20重量%的NCO值,和b)20-0重量%的另一种多异氰酸酯,并且其中所述异氰酸酯反应性组合物包含a)80-100重量% 平均标称官能度为2-8,平均当量为750-5000,平均分子量为2000-12000,氧化乙烯含量为60-90重量%,伯羟基含量为70-100的聚醚多元醇 百分比按总数计算 的多元醇中的伯羟基和仲羟基,b)异氰酸酯反应性增链剂,其量使得硬嵌段比小于0.50,c)20-0重量%的一种或多种其它异氰酸酯反应性化合物,不包括 水,多元醇a)和异氰酸酯反应性化合物c)的量根据该多元醇a)和化合物c)的总量计算。
摘要:
A method for the production of polyurethane elastomers by reacting an isocyanate epolymer having an isocyanate content of from 5 to 10% by weight which is the reaction product of an excessive amount of a polyisocyanate containing at least 85% by weight of 4,4'-diphenylmethane diisocyanate or a variant thereof and a polyether polyol having an average nominal hydroxyl functionality of from 2 to 4, an average hydroxyl equivalent weight of from 500 to 3000, and an oxyethylene content of from 50 to 85% by weight, with an aqueous latex to form a foam, and compressing said foam.
摘要:
The present invention is concerned with a material comprising: a matrix material comprising a plurality of urethane and/or urea and/or isocyanurate groups and having a hardblock content of more than 75% (hereinafter called matrix A); and a polymeric material which 1) has no groups which are able to form a urethane, urea or isocyanurate group with an isocyanate group, 2) exhibits a phase change as measured by differential scanning calorimetry (DSC) in the temperature range −10° C. to +60° C. with an enthalpy ΔHm of at least 87 kJ/kg, 3) is interpenetrating said matrix A, and 4) has an average molecular weight of more than 700 and comprises at least 50% by weight of oxyalkylene groups, based on the weight of this material, wherein at least 85% of the oxyalkylene groups are oxyethylene groups (hereinafter called polymeric material B); and wherein the relative amount of said matrix A and of said polymeric material B, on a weight basis, ranges from 15:85 to 75:25. Process for preparing such material.
摘要:
A process for preparing a polyisocyanurate polyurethane material, which process comprises reacting a polyisocyanate and an isocyanate-reactive composition, wherein the reaction is conducted at an isocyanate index of 1600 to 100,000 and in the presence of a trimerization catalyst, wherein the polyisocyanate comprises a) 75-100% by weight of diphenylmethane diisocyanate comprising at least 40%, preferably at least 60% and most preferably at least 85% by weight of 4,4′-diphenylmethane diisocyanate and/or a variant of said diphenylmethane diisocyanate which variant is liquid at 25° C. and has an NCO value of at least 20% by weight (polyisocyanate a), and b) 25-0% by weight of another polyisocyanate (polyisocyanate b), the amount of polyisocyanate a) and polyisocyanate b) being calculated on the total amount of this polyisocyanate a) and polyisocyanate b), and wherein the isocyanate-reactive composition comprises a) 80-100% by weight of a polyether polyol having an average nominal functionality of 2-6, an average equivalent weight of 1100-5000 and an oxyethylene (EO) content of 65-100% by weight and b) 20-0% by weight of one or more other isocyanate-reactive compounds, the amount of polyol a) and isocyanate-reactive compound b) being calculated on the total amount of this polyol a) and compound b).
摘要:
Process for preparing a flexible foam by reacting a prepolymer having an NCO value of 3-15% by weight, which is the reaction product obtained by reacting an excessive amount of a polyisocyanate with a polyether polyol or a mixture of such polyols, said polyol or mixture having an average nominal hydroxyl functionality of from 2 to 6, an average hydroxyl equivalent weight of from 500 to 5000 and an oxyethylene content of at least 50% by weight, with water, the amount of water being 15-500 parts by weight per 100 parts by weight of prepolymer, at the start of the reaction the temperature of the prepolymer being 10.degree.-50.degree. C. and the temperature of the water being 10.degree.-50.degree. C. higher than the temperature of the prepolymer and a process for preparing a flexible foam by reacting the above prepolymer with water in the presence of a superabsorbent polymer.
摘要:
Composition obtained by reacting a polyisocyanate which is a diphenylmethane diisocyanate, optionally comprising a homologue comprising 3 or more isocyanate groups, and/or a variant of such diisocyanate with a monoalkylether of a polyoxyalkylene monoamine having an average molecular weight of 550-3000 and an oxyethylene content of more than 50% by weight, calculated on the weight of the monoamine, and the alkyl group having 1-4 carbon atoms at index of 100-250. It is used as plasticizer, particularly in polyurethane and/or polyurea materials.