Cyclic carbonic acid derivatives
    2.
    发明授权
    Cyclic carbonic acid derivatives 失效
    环状碳酸衍生物

    公开(公告)号:US4501905A

    公开(公告)日:1985-02-26

    申请号:US555754

    申请日:1983-11-28

    摘要: New cyclic carbonic acid derivatives of the formula ##STR1## in which R denotes either --CH.sub.2 OH, R.sup.1 then representing an alkyl radical having 1 to 4 C atoms, or ##STR2## R.sup.1 and R.sup.2 then independently of one another representing methyl or ethyl, or ##STR3## R.sup.1 and R.sup.3 then each representing an alkyl radical having 1 to 4 C atoms,or in whichR and R.sup.1 together denote ##STR4## wherein A represents the group ##STR5## or oxygen, a process for their preparation, and their use as copolymerization components in the preparation of polycarbonates.

    摘要翻译: 式(IMAGE)的新的环状碳酸衍生物,其中R表示-CH 2 OH,R 1表示具有1至4个C原子的烷基,或者R 1和R 2彼此独立地代表甲基或乙基,或 R1和R3分别代表具有1至4个C原子的烷基,或其中R和R 1一起表示“IMAGE”,其中A表示基团或氧,其制备方法及其用途 作为制备聚碳酸酯的共聚组分。

    Process for the preparation of dimethyl carbonate
    3.
    发明授权
    Process for the preparation of dimethyl carbonate 失效
    碳酸二甲酯的制备方法

    公开(公告)号:US4335051A

    公开(公告)日:1982-06-15

    申请号:US155036

    申请日:1980-05-30

    IPC分类号: C07C69/96 C07C68/00 C07C68/02

    CPC分类号: C07C68/02

    摘要: In a process for the preparation of dimethyl carbonate by reacting methanol with phosgene and/or methyl chloroformate, the improvement wherein the reaction is carried out in the presence of an aqueous alkali metal hydroxide solution and in the presence of an inert, water-immiscible organic solvent, at a temperature in the range from -20.degree. C. to +40.degree. C.

    摘要翻译: 在通过甲醇与光气和/或氯甲酸甲酯反应制备碳酸二甲酯的方法中,其反应在碱金属氢氧化物水溶液的存在下和在惰性的与水不混溶的有机物的存在下进行 溶剂,温度范围为-20℃至+ 40℃。

    Cyclic carbonic acid derivatives
    7.
    发明授权
    Cyclic carbonic acid derivatives 失效
    环状碳酸衍生物

    公开(公告)号:US4440937A

    公开(公告)日:1984-04-03

    申请号:US340943

    申请日:1982-01-20

    摘要: New cyclic carbonic acid derivatives of the formula ##STR1## in which R denotes either --CH.sub.2 OH, R.sup.1 then representing an alkyl radical having 1 to 4 C atoms, or ##STR2## R.sup.1 and R.sup.2 then independently of one another representing methyl or ethyl, or ##STR3## R.sup.1 and R.sup.5 then each representing an alkyl radical having 1 to 4 C atoms, or in whichR and R.sup.1 together denote ##STR4## wherein A represents the group ##STR5## or oxygen, a process for their preparation, and their use as copolymerization components in the preparation of polycarbonates.

    摘要翻译: 式(IMAGE)的新的环状碳酸衍生物,其中R表示-CH 2 OH,R 1表示具有1至4个C原子的烷基,或者R 1和R 2彼此独立地代表甲基或乙基,或 R1和R5分别代表具有1-4个C原子的烷基,或其中R和R 1一起表示,其中A代表基团或氧,其制备方法及其用途 作为制备聚碳酸酯的共聚组分。

    Copolymers based on aliphatic polycarbonates and lactams
    8.
    发明授权
    Copolymers based on aliphatic polycarbonates and lactams 失效
    基于脂肪族聚碳酸酯和内酰胺的共聚物

    公开(公告)号:US4377670A

    公开(公告)日:1983-03-22

    申请号:US314242

    申请日:1981-10-23

    CPC分类号: C08G69/44 C08G71/04

    摘要: Anionic copolymers of lactams and aliphatic polycarbonates having urethane and carboxylic acid ester groups, preferably having recurring structural units of the formula:--NH--CO--O--Y--O--CO--(CR.sub.2).sub.n --whereinR represents hydrogen or C.sub.1 -C.sub.4 -alkyl;n represents an integer of from 2 to 13;Y represents the residue of an alcohol of the following formula:HO--X--OH,whereinX represents an open-chain, cyclic or mixed open-chain-cyclic alkylene radical having from 2 to 12 carbon atoms which is optionally substituted by C.sub.1 -C.sub.4 -alkyl and optionally interrupted by from 1 to 3 oxygen atoms, or a polyethylene glycol having a molecular weight up to 10,000 or an alkoxylation product of bifunctional phenols.

    摘要翻译: 具有氨基甲酸酯和羧酸酯基的内酰胺和脂族聚碳酸酯的阴离子共聚物,优选具有下式的重复结构单元:-NH-CO-O-Y-O-CO-(CR2)n-,其中R表示氢或C1-C4-烷基; n表示2〜13的整数, Y表示下式的醇的残基:HO-X-OH,其中X表示具有2至12个碳原子的开链,环状或混合的开链 - 环状亚烷基,其任选被C1- C4烷基,任选地被1至3个氧原子间隔,或分子量高达10,000的聚乙二醇或双功能酚的烷氧基化产物。

    Thiodiglycol polycarbonates
    10.
    发明授权
    Thiodiglycol polycarbonates 失效
    硫二甘醇聚碳酸酯

    公开(公告)号:US4054597A

    公开(公告)日:1977-10-18

    申请号:US687437

    申请日:1976-05-17

    CPC分类号: C08G64/025 C08G18/4676

    摘要: The present invention relates to an interfacial process for the production of polycarbonates having terminal, aliphatically bonded hydroxyl groups by reacting predominantly dihydric alcohols with phosgene or chlorocarbonic acid esters of predominantly dihydric alcohols and/or phenols using alkali liquors as HCl-binding agents and in the presence of inert solvents, the process according to the invention being distinguished by the fact that concentrated, aqueous alkali liquors are used as the HCl-binding agents and thiodiglycol, optionally mixed with additional monohydric and polyhydric alcohols, is used as the dihydric alcohol. The present invention further relates to the new polycarbonates produced according to the novel process and to the use of these new polycarbonates for the production of polyurethane plastics.

    摘要翻译: 本发明涉及通过使用碱金属作为HCl结合剂,主要使二元醇与主要为二元醇和/或酚的光气或氯代碳酸酯主要反应的具有末端脂族键合羟基的聚碳酸酯的界面方法, 惰性溶剂的存在,根据本发明的方法的区别在于使用浓缩的碱水溶液作为HCl结合剂,并且任选与另外的一元醇和多元醇混合的硫二甘醇用作二元醇。 本发明还涉及根据新方法生产的新的聚碳酸酯以及这些新的聚碳酸酯用于生产聚氨酯塑料的用途。