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    • 1. 发明授权
    • Carbodiimide-modified polymethylene polyphenylene polyisocyanates for
use in the preparation of polyisocyanurate-polyurethane foams
    • 用于制备聚异氰脲酸酯 - 聚氨酯泡沫的碳二亚胺改性聚亚甲基多亚苯基多异氰酸酯
    • US4424288A
    • 1984-01-03
    • US334158
    • 1981-12-24
    • John T. Patton, Jr.Peter T. KanThirumurti Narayan
    • John T. Patton, Jr.Peter T. KanThirumurti Narayan
    • C08G18/48C08G18/79C08G18/14C08G18/78
    • C08G18/797C08G18/4829C08G2105/02Y10S521/901Y10S521/902
    • Liquid carbodiimide-modified organic polyisocyanates are prepared by reacting a crude polymethylene polyphenylene polyisocyanate containing no more than 70 weight percent diphenylmethane diisocyanate with an isomer mixture of 40 to 100 weight percent 4,4'-, 0 to 50 weight percent 2,4- and 0 to 10 weight percent 2,2'-diphenylmethane diisocyanate and having an average functionality of 2.1 to 2.7 and a free NCO content of at least 30 percent weight percent in the presence of an effective amount of carbodimidization catalyst. Polyisocyanurate-polyurethane foams prepared by reacting the modified polyisocyanates and polyols selected from the group consisting of diethylene glycol and ethylene oxide adducts of trimethylolpropane, trimethylolethane, glycerine, pentaerythritol, .alpha.-methylglucoside, sucrose, toluene diamine and methylene dianiline in the presence of trimerization catalysts exhibit improved compression strengths and K-factors with low friability and smoke density.
    • 液体碳二亚胺改性的有机多异氰酸酯通过使含有不超过70重量%的二苯基甲烷二异氰酸酯的粗多亚甲基多亚苯基多异氰酸酯与40至100重量%的4,4'-,0至50重量%的2,4-和 0至10重量%的2,2'-二苯基甲烷二异氰酸酯,并且在有效量的碳二亚胺化催化剂存在下,其平均官能度为2.1至2.7,游离NCO含量为至少30重量%。 通过在三聚催化剂存在下,使改性多异氰酸酯和选自二甘醇和三羟甲基丙烷,三羟甲基乙烷,甘油,季戊四醇,α-甲基葡糖苷,蔗糖,甲苯二胺和亚甲基二苯胺的环氧乙烷加成物反应制备的聚异氰脲酸酯聚氨酯泡沫 表现出改善的压缩强度和具有低脆性和烟密度的K因子。
    • 3. 发明授权
    • Liquid carbodiimide- and uretonimine-isocyanurate-containing
polyisocyanate compositions and microcellular foams made therefrom
    • 含有碳二亚胺 - 和脲酮亚胺 - 异氰脲酸酯的多异氰酸酯组合物和由其制成的微孔泡沫体
    • US4284730A
    • 1981-08-18
    • US119273
    • 1980-02-07
    • Thirumurti NarayanPeter T. Kan
    • Thirumurti NarayanPeter T. Kan
    • C07D229/00C07D251/34C08G18/79C08G18/14C08G18/16
    • C08G18/79C07D229/00C07D251/34C08G2101/0008C08G2101/0025C08G2101/0066C08G2101/0083Y10S521/901Y10S521/902
    • The invention relates to carbodiimide- and/or uretonimine-isocyanurate-containing polyisocyanates, to the process for their preparation, and to microcellular foams prepared therefrom.These compositions may be prepared in the presence of the appropriate catalyst by(a) a partial trimerization of a mixture of polyisocyanate and carbodiimide and uretonimine containing polyisocyanate with trimer catalyst to the desired free isocyanate level,(b) sequential, partial carbodiimidization followed by partial trimerization of a polyisocyanate to the desired free isocyanate level(c) sequential partial trimerization of a polyisocyanate followed by partial carbodiimidization,(d) simultaneous conversion using the mixed catalyst system of carbodiimide and isocyanurate catalysts reacted to the desired free isocyanate level, and(e) blending liquid polyisocyanate with the carbodiimide and uretonimine containing polyisocyanate and isocyanurate containing polyisocyanate to the desired isocyanate level.
    • 本发明涉及含碳二亚胺和/或脲酮亚胺 - 异氰脲酸酯的多异氰酸酯,其制备方法以及由其制备的微孔泡沫。 这些组合物可以在合适的催化剂存在下通过以下方法制备:(a)将多异氰酸酯和碳二亚胺与含脲醛亚胺的多异氰酸酯与三聚体催化剂的混合物部分三聚化为所需的游离异氰酸酯水平,(b)顺序的部分碳二亚胺化, 将多异氰酸酯三聚为所需的游离异氰酸酯水平(c)多异氰酸酯的顺序部分三聚化,然后进行部分碳二亚胺化,(d)使用碳二亚胺和异氰脲酸酯催化剂的混合催化剂体系同时转化反应至所需的游离异氰酸酯水平,(e )将液体多异氰酸酯与含有碳二亚胺和含脲酮亚胺的多异氰酸酯和含异氰脲酸酯的多异氰酸酯混合至所需的异氰酸酯水平。
    • 5. 发明授权
    • Stabilizer package for polyurethane comprising a substituted cresol and
another costabilizer
    • 用于聚氨酯的稳定剂包,其包含取代的甲酚和另一种稳定剂
    • US4677154A
    • 1987-06-30
    • US810238
    • 1985-12-18
    • Thirumurti NarayanPeter T. Kan
    • Thirumurti NarayanPeter T. Kan
    • C08K5/00C08L75/04
    • C08K5/005
    • The invention relates to elimination of discoloration in polyurethanes, particularly thermoplastic polyurethanes, by the addition to the reaction mixture from 0.01 to 1 percent by weight, based on the isocyanate component, a stabilizer package characterized as BHT and a compound selected from tris(nonylphenyl) phosphite, tetrakis(2,4-di-t-butylphenyl)-4,4'-biphenylene diphosphonite, bis(2,4-di-t-butylphenyl)pentaerythritol diphosphite, 2,2'-oxamido-bis[ethyl-3(3,5-dit-butyl-4-hydroxyphenyl)]propionate, disteryl thiodipropionate, triisodecyl phosphite, trilauryl trithiophosphite, distearyl pentaerythritol, 2,2'-ethylene bis(4,6-di-tertiarylbutylphenol), octadecyl 3-(3',5'-di-t-butyl-4'-hydroxy phenyl) propionate, 4,4'-thio-bis(2-t-butyl-5-methylphenol), 4,4'-thio-bis(2-t-butyl-5-methylphenol), 2,2'-methylene-bis-(4-methyl-6-t-butylphenol), tris (3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate, phenothiazine, tris(2,4-di-t-butylphenyl) phosphite, 4,4'-methylene bis(2,6-di-t-butylphenol), 2,6-di-t-butyldimethyl-aminomethylphenol and blends thereof.
    • 本发明涉及消除聚氨酯,特别是热塑性聚氨酯中的变色,通过加入到反应混合物中,以异氰酸酯组分为基准,其量为0.01至1重量%,以BHT为特征的稳定剂包和选自三(壬基苯基) 亚磷酸酯,四(2,4-二叔丁基苯基)-4,4'-亚联苯基二亚膦酸酯,双(2,4-二叔丁基苯基)季戊四醇二亚磷酸酯,2,2'-氧代氨基 - 双[乙基-3 (3,5-二 - 丁基-4-羟基苯基)]丙酸酯,硫代二丙酸二十二烷酯,亚磷酸三异癸酯,三月桂基三硫代亚磷酸酯,二硬脂基季戊四醇,2,2'-亚乙基双(4,6-二叔丁基丁基酚),3- ',5'-二叔丁基-4'-羟基苯基)丙酸酯,4,4'-硫代 - 双(2-叔丁基-5-甲基苯酚),4,4'-硫代 - 双(2- 叔丁基-5-甲基苯酚),2,2'-亚甲基 - 双 - (4-甲基-6-叔丁基苯酚),三(3,5-二叔丁基-4-羟基苄基)异氰脲酸酯,吩噻嗪, 亚磷酸三(2,4-二叔丁基苯基)酯,4,4'-亚甲基双(2,6-二叔丁基苯酚) 6-二叔丁基二甲基氨基甲基苯酚及其混合物。