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1. 发明授权

US4001184A Process for preparing a branched polycarbonate 失效
标题翻译：制备支化聚碳酸酯的方法
公开(公告)号：US4001184A
公开(公告)日：1977-01-04
申请号：US563494
申请日：1975-03-31
申请人： Steven William Scott
发明人： Steven William Scott
IPC分类号： C08G63/00 , C08G63/64 , C08G63/82 , C08G64/14 , C08G64/20 , C08G17/13
CPC分类号： C08G64/14 , C08G63/64
摘要： A process for preparing a thermoplastic randomly branched aromatic polycarbonate which process comprises reacting at least 20 weight percent of a stoichiometric quantity of a carbonate precursor with a mixture of a dihydric phenol and at least 0.05 mole percent of a polyfunctional aromatic compound in a medium of water and a solvent for the polycarbonate having present therein at least 1.2 mole percent of a polymerization catalyst, while concomitantly adding to the reaction medium sufficient alkali metal hydroxide to maintain a pH range of about 3.0 to about 6.0, and then adding sufficient alkali metal hydroxide to raise the pH to at least about 9.0 to less than about 12 while reacting the remaining carbonate precursor.
摘要翻译：一种制备热塑性无规支化芳族聚碳酸酯的方法，其方法包括使至少20重量百分比的化学计量的碳酸酯前体与二元酚和至少0.05摩尔％的多官能芳族化合物的混合物在水介质中反应和其中存在至少1.2摩尔％的聚合催化剂的聚碳酸酯的溶剂，同时向反应介质中加入足够的碱金属氢氧化物以保持约3.0至约6.0的pH范围，然后加入足够的碱金属氢氧化物在将剩余的碳酸酯前体反应的同时将pH升高至至少约9.0至小于约12。

2. 发明授权

US3897392A Branched aromatic polycarbonates 失效
标题翻译：支链芳族聚碳酸酯
公开(公告)号：US3897392A
公开(公告)日：1975-07-29
申请号：US40898173
申请日：1973-10-23
申请人： BAYER AG
发明人： HAUPT HEINRICH , FREITAG DIETER , VERNALEKEN HUGO , WAGNER KUNO , FINDEISEN KURT
IPC分类号： C08G63/00 , C08G64/00 , C08G64/14 , C08G64/20 , C08G17/13
CPC分类号： C08G64/14
摘要： Thermoplastic branched aromatic polycarbonates and novel orthoester branching agents. The polycarbonates may be characterized by structural elements of the formula
摘要翻译：热塑性支链芳族聚碳酸酯和新型原酯支化剂。聚碳酸酯的特征可以在于式[R'（ODO-CO）nO-DO] 3C-X'的结构单元，其中X'= -ODO - （ - CO-ODO）n R'，[-ODO -ODO）n R'] 3 D =并且可以相同或不同Z = C1-C10亚烷基或C3-C10亚环烷基，C2-C15亚烷基或C3-C15亚环烷基，单键，-O - ， - S-， -SO - ， - SO 2 - ， - CO-或CH 3 CH 3 | | C -C - | CH 3 CH 3 R R = H，C 1 -C 4烷基或卤素，R'= H或-CO-O-芳基和N，N '=标识或不同，0和50之间，所有的N和N'在聚碳酸酯分子中的比例至少为1。

3. 发明授权

US3896090A Process for preparing polycarbonates 失效
公开(公告)号：US3896090A
公开(公告)日：1975-07-22
申请号：US39387573
申请日：1973-09-04
申请人： PPG INDUSTRIES INC
发明人： MAXIMOVICH MICHAEL J
IPC分类号： C08G64/02 , C08G64/30 , C08G64/34 , C08G17/13 , C08G17/007
CPC分类号： C08G64/305 , C08G64/0208 , C08G64/34
摘要： Polycarbonates prepared from an alkylene carbonate (or 1,2epoxide with carbon dioxide) and monomeric polyols are prepared in good yield in short reaction times at atmospheric pressure containing high carbon dioxide concentrations, by employing an alkali metal, alkaline earth metal or ammonium borate or hydrocarbyloxy titanate catalyst, such as sodium or potassium borate or titanium acid n-butylate.

4. 发明授权

US3888826A Process for preparing aromatic polycarbonates 失效
标题翻译：制备芳族聚碳酸酯的方法
公开(公告)号：US3888826A
公开(公告)日：1975-06-10
申请号：US37549273
申请日：1973-07-02
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： YAMANA HIROSUKE , KUNII TADASHI , FURUSAWA TOMOTAKA , SUGIMURA YOSHIHIRO , NAKAI HIROSHI , HIRO YASUO
IPC分类号： C08G64/20 , C08G64/30 , C08G17/13 , C08G35/00
CPC分类号： C08G64/205 , C08G64/307
摘要： A process for preparing aromatic polycarbonates from diphenyl carbonate and bisphenol A which comprises effecting preliminary polymerization under limited operational conditions to produce specific polycarbonate prepolymers and then subjecting the specific prepolymers to further polymerization for a shorter residence time thereby obtaining high molecular weight polycarbonates.

5. 发明授权

US3845015A High performance polysulfonate resin 失效
标题翻译：高性能聚四氟乙烯树脂
公开(公告)号：US3845015A
公开(公告)日：1974-10-29
申请号：US41149273
申请日：1973-10-31
申请人： DOW CHEMICAL CO
发明人： THOMAS R
IPC分类号： C08G75/24 , C08G17/08 , C08G17/13
CPC分类号： C08G75/24
摘要： 1. THE POLYMER CONSISTING ESSENTIALLY OF REPEATING UNITS HAVING THE FORMULA

-(O-(1,4-PHENYLENE)-C(-CH3)(-R)-(1,4-PHENYLENE)-O-SO2-

(1,4-PHENYLENE)-O-(1,4-PHENYLENE)-CO-(1,4-PHENYLENE)-

O-(1,4-PHENYLENE)-SO2)-

WHEREIN R IS AN ALKYL GROUP OF 1-6 CARBON ATOMS.

6. 发明授权

US3787359A Continuous manufacture of high molec-ular weight linear polycarbonates 失效
标题翻译：高选择重量线性聚碳酸酯的连续制造
公开(公告)号：US3787359A
公开(公告)日：1974-01-22
申请号：US3787359D
申请日：1972-01-11
申请人： BASF AG
发明人： HORN P , JOSCHEK H , SCHUSTER L , FALKENSTEIN G
IPC分类号： C08G64/20 , C08G64/24 , C08G17/13
CPC分类号： C08G64/24 , C08G64/205
摘要： CONTINUOUS MANUFACTURE OF HIGH MOLECULAR WEIGHT LINEAR POLYCARBONATES OF HIGH PURITY FROM ORGANIC DIHYDROXY COMPOUNDS AND PHOSGENE IN ONE OR MORE PACKED REACTORS, WHEREIN THE REACTION IS CARRIED OUT UNDER "TRANSITION FLOW" CONDITIONS, CONVENIENTLY WITH RECYCLING OF THE REACTION MIXTURE.

7. 发明授权

US3758443A Icular polyol polycarbonate process for the production of polyurethane elastomers based on a part 失效
标题翻译：基于部分生产聚氨酯弹性体的聚二醇聚氧乙烯过程
公开(公告)号：US3758443A
公开(公告)日：1973-09-11
申请号：US3758443D
申请日：1972-04-24
申请人： BAYER AG
发明人： MUHLHAUSEN C , DOBEREINER U , KONIG K , MULLER E
IPC分类号： C08G18/00 , C08G18/10 , C08G18/42 , C08G18/44 , C08G18/67 , C08G63/00 , C08G63/64 , C08G22/10 , C08G17/13
CPC分类号： C08G18/675 , C08G18/10 , C08G18/4238 , C08G18/44 , C08G2410/00 , C08G18/32
摘要： A PROCESS IS PROVIDED FOR THE PRODUCTION OF POLYURETHANE ELASTOMERS BY REACTING HIGHER MOLECULAR WEIGHT HYDROXY COMPOUNDS WHICH HAVE A MOLECULAR WEIGHT OF 800 TO 2500, DIISOCYANATES AND LOW MOLECULAR WEIGHT COMPOUNDS WHICH HAVE A MOLECULAR WEIGHT OF UP TO 400 AND WHICH CONTAIN AT LEAST TWO HYDROGEN ATOMS REACTIVE WITH ISOCYANATES, CHARACTERIZED IN THAT THE HIGHER MOLECULAR WEIGHT HYDROXY COMPOUNDS ARE CONDENSATION PRODUCTS OF 1,6-HEXANE DIOL, ADIPIC ACID AND DIARYL CARBONATE.

8. 发明授权

US3625920A Process for the production of carbonic acid polyesters 失效
标题翻译：生产碳酸聚酯的方法
公开(公告)号：US3625920A
公开(公告)日：1971-12-07
申请号：US3625920D
申请日：1968-05-03
申请人： INST TWORZYW SZTUCZNYCH WARSZA
发明人： BORKOWSKI JAN
IPC分类号： C08G64/30 , C08G17/13
CPC分类号： C08G64/307
摘要： Process for producing polycarbonate by transesterification reaction between aromatic monohydroxycarbonic ester and dihydroxy diphenyl alkane or phenol adduct thereof in presence of alkali metal salt of fluoroboric acid and/or hydroxyfluoroboric acid as catalysts and stabilizers.

9. 发明授权

US3622612A Process for the production of neopentylglycol-carboxylic acid-carbonic acid mixed esters 失效
标题翻译：生产新戊二醇 - 羧酸 - 碳酸混合酯的方法
公开(公告)号：US3622612A
公开(公告)日：1971-11-23
申请号：US3622612D
申请日：1968-05-28
申请人： BAYER AG
发明人： MULLER ERWIN
IPC分类号： C08G63/64 , C07C69/00 , C08G17/13 , C08G17/18
CPC分类号： C08G63/64
摘要： Process for producing neopentylglycol-carboxylic acid-carbonic acid mixed esters by transesterifying a diaryl carbonate with a neopentylglycol-carboxylic acid semiester at a temperature of from about 180* to about 220* C. and the utility of such products in the production of lacquers and resins and plastics.

10. 发明授权

US3567685A Polymer of a dihydric phenol and an imide 失效
标题翻译：二氢苯酚和二氯甲烷的聚合物
公开(公告)号：US3567685A
公开(公告)日：1971-03-02
申请号：US3567685D
申请日：1969-08-26
申请人： GEN ELECTRIC
发明人： BIALOUS CHARLES A , EVANS MILTON L
IPC分类号： C08G63/685 , C08G64/12 , C08G73/16 , C08G17/13
CPC分类号： C08G64/12 , C08G63/685 , C08G73/16
摘要： A COMPOSITION CONSISTING OF THE REACTION PRODUCT OF A DIHYDRIC PHENOL, A PARTICULAR IMIDE AND A CARBONYL HALIDE WHEREIN THE PARTICULAR IMIDE IS EITHER

2-(X-R-),5-(HOOC-)ISOINDOLINE-1,3-DIONE OR

(5-(HOOC-)ISOINDOLINE-1,3-DION-2-YL)2-R

OR MIXTURES THEREOF. IN THE FORMULAS, R IS DIVALENT HYDROCARBON RADICAL CONTAINING 1 TO 25 CARBON ATOMS AND X IS EITHER A CARBOXYL, A MERCAPTO, A HYDROXYL OR A SECONDARY AMINO GROUP.

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