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    • 2. 发明授权
    • Polylactide containing hot melt adhesive
    • 聚丙交酯含热熔胶
    • US5252646A
    • 1993-10-12
    • US968564
    • 1992-10-29
    • Carmine P. IovineThomas F. KauffmanJules E. SchoenbergPaul P. Puletti
    • Carmine P. IovineThomas F. KauffmanJules E. SchoenbergPaul P. Puletti
    • C09J167/04C08L93/04
    • C09J167/04
    • Hot melt adhesive compositions are prepared from 20 to 98% by weight of a polylactide homo- or copolymer containing at least 20 molar percent of the lactide component; 2 to 80% by weight of a polar tackifier having a Ring and Ball softening point (as described by ASTM E-26) greater than about 60.degree. C.; 0 to 50% by weight of a plasticizer; 0 to 30% by weight of a wax diluent; 0-3% by weight of a stabilizer; and 0-20% of a polymer. By utilizing a naturally occurring, thermoplastic, biodegradable copolymer as the base polymer, these adhesives advance the state of the art of hot melt adhesives by alleviating the dependence on petroleum based materials and by allowing for the development of hot melt adhesives which either degrade naturally after coming in contact with the soil or which can be composted.
    • 由20至98重量%的含有至少20摩尔%丙交酯组分的聚丙交酯均聚物或共聚物制备热熔粘合剂组合物; 2至80重量%的具有环球软化点(如ASTM E-26所述)的极性增粘剂大于约60℃; 0〜50重量%的增塑剂; 0至30重量%的蜡稀释剂; 0-3重量%的稳定剂; 和0-20%的聚合物。 通过使用天然存在的,热塑性的,可生物降解的共聚物作为基础聚合物,这些粘合剂通过减轻对石油基材料的依赖性和通过允许开发热熔粘合剂来促进热熔粘合剂的技术水平,其自然降解 接触土壤或可以堆肥。
    • 8. 发明授权
    • Novel polyimides, and polyamic acid and ester intermediates thereof
    • 新型聚酰亚胺及其聚酰胺酸及其酯中间体
    • US4405770A
    • 1983-09-20
    • US292257
    • 1981-08-12
    • Jules E. SchoenbergStephen P. Anderson
    • Jules E. SchoenbergStephen P. Anderson
    • C08G73/10C08G73/12
    • C08G73/1064C08G73/105Y10T428/31721
    • Novel polyimides, optionally end-capped with polymerizable or inert groups, and the polyamic acid or ester intermediates thereof are prepared by reacting a tetracarboxylic acid compound (e.g. pyromellitic dianhydride or 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride or its methyl diester) with diamines having the general formula ##STR1## wherein Z is oxygen or sulfur, X and/or Y are carbonyl or carbinol groups, the amine groups may be in the 2-, 3-, and/or 4-position, and isomerism is present when X and/or Y is a carbinol group. The polyimides may be end-capped by reaction, during or after their formation, with polymerizable groups such as 3-aminophenyl acetylene or 3,6-endomethylene-1,2,3,6-tetrahydrophthalic anhydride. The diamines are novel classes of amines when Z is sulfur and when Z is oxygen and X, Y, or X and Y are carbinol groups.
    • 可选地用可聚合或惰性基团封端的新型聚酰亚胺,其聚酰胺酸或酯中间体是通过使四羧酸化合物(例如均苯四酸二酐或3,3',4,4'-二苯甲酮四羧酸二酐或其 甲基二酯)与具有通式为“IMAGE”的二胺,其中Z是氧或硫,X和/或Y是羰基或甲醇基,胺基可以是2-,3-和/或4-位, 并且当X和/或Y是甲醇基团时存在异构体。 聚酰亚胺可以通过其形成过程中或之后的反应,可聚合基团如3-氨基苯基乙炔或3,6-内亚甲基-1,2,3,6-四氢邻苯二甲酸酐封端。 当Z是硫时,当Z是氧而X,Y或X和Y是甲醇基时,二胺是新的胺类。