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Patent Agency Ranking1.发明授权Process for the polymerization of 2-pyrrolidone with carbon dioxide as activator 失效用二氧化碳作为活化剂聚合2-吡咯烷酮的方法
公开(公告)号：US3682869A
公开(公告)日：1972-08-08
申请号：US3682869D
申请日：1970-09-03
Applicant: RADIATION RES CORP
Inventor： JAROVITZKY PETER A
CPC classification number: C08G69/24
Abstract: IN THE POLYMERIZATION OF 2-PYRROLIDONE IN THE PRESENCE OF AN ALKALINE POLYMERIZATION CATALYST AND CARBON DIOXIDE, THE IMPROVEMENT WHICH COMPRISES ADDING SAID CARBON DIOXIDE TO A CONCENTRATED REACTION MASS HAVING A MOLAR RATIO OF FROM ABOUT 1 TO ABOUT 4 MOLS OF 2-PYRROLIDONE PER MOL OF ALKALINE POLYMERIZATION CATALYST AND THEN DILUTING SAID CONCENTRATED, CARBONATED REACTION MASS WITH AN AMOUNT OF 2-PYRROLIDONE SUFFICIENT TO PROVIDE AT LEAST 9 MOLS OF TOTAL 2-PYRROLIDONE PER MOL OF ALKALINE POLYMERIZATION CATALYST BEFORE SAID CARBONATED REACTION MASS IS POLYMERIZED.
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2.发明授权Polymerization of 2-pyrrolidone in the presence of so2 with mixture of an alkali metal sulfite and an alkali metal bisulfite 失效在二氧化硫存在下，2-烷基吡咯烷酮与烷基金属硫酸盐和碱金属双相混合物的混合物的聚合
公开(公告)号：US3681294A
公开(公告)日：1972-08-01
申请号：US3681294D
申请日：1970-09-03
Applicant: RADIATION RES CORP
Inventor： JAROVITZKY PETER A
CPC classification number: C08G69/24
Abstract: IN THE POLYMERIZATION OF 2-PYRROLIDONE IN THE PRESENCE OF AN ALKALINE POLYMERIZATION CATALYST AND SULFUR DIOXIDE AS A POLYMERIZATION ACTIVATOR, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE POLYMERIZATION IN THE PRESENCE OF A MIXTURE OF AN ALKALI METAL SULFITE AND AN ALKALI METAL BISULFITE WHICH HAS BEEN ADDED TO THE REACTION MASS BEFORE THE POLYMERIZATION, THE SULFUR DIOXIDE BEING NOT MORE THAN 0.90 MOL PER MOL OF ALKALINE POLYMERIZATION CATALYST.
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3.发明授权Polymerization of 2-pyrrolidone with carbon dioxide as activator and particulate material for reproducible results 失效二氧化碳与二氧化碳作为活化剂和颗粒材料的可重复结果的聚合
公开(公告)号：US3683046A
公开(公告)日：1972-08-08
申请号：US3683046D
申请日：1970-09-03
Applicant: RADIATION RES CORP
Inventor： JAROVITZKY PETER A
CPC classification number: C08G69/24
Abstract: 2-Pyrrolidone is polymerized to a high molecular weight polymer in the presence of an alkaline polymerization catalyst, CO2, and a particulate material that was added to the reaction mass.
Abstract translation: 在碱性聚合催化剂CO 2和加入到反应物料中的颗粒材料的存在下，将2-吡咯烷酮聚合成高分子量聚合物。
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4.发明授权Polymerization of 2-pyrrolidone using n-acyl compounds as co-activators with carbon dioxide as activator 失效使用N-亚乙基化合物作为辅助活化剂与二氧化碳作为活化剂的聚合作用
公开(公告)号：US3681295A
公开(公告)日：1972-08-01
申请号：US3681295D
申请日：1970-09-03
Applicant: RADIATION RES CORP
Inventor： JAROVITZKY PETER A
CPC classification number: C08G69/24
Abstract: AN IMPROVED PROCESS FOR THE POLYMERIZATION OF 2PYRROLIDONE TO PROVIDE HIGH MOLECULAR WEIGHTS AND HIGH RATES OF CONVERSIN COMPRISING POLYMERIZING 2-PYRROLIDONE IN THE PRESENCE OF AN ALKALINE POLYMERIZATION CATALYST, CARBON DIOXIDE, AND NOT MORE THAN 7 MILLIMOLS OF AN ACYL COMPOUND PER MOL OF THE ALKALINE POLYMERIZATION CATALYST. THE ACYL COMPOUND CAN CONVENIENTLY BE ANY OF THE ACYL COMPOUNDS PREVIOUSLY DISCLOSED AS POLYMERIZATION ACTIVATORS IN THE POLYMERIZATION OF 2-PYRROLIDONE.
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5.发明授权
公开(公告)号：US3681293A
公开(公告)日：1972-08-01
申请号：US3681293D
申请日：1970-09-03
Applicant: RADIATION RES CORP
Inventor： JAROVITZKY PETER A , MAYNOR FREDERICK L
CPC classification number: C08G69/24
Abstract: A CONTINUOUS PROCESS FOR THE POLYMERIZATION OF 2-PYRROLIDONE, WHEREIN THE PYRROLIDONE IS PURIFIED BY DISTILLATIN UNDER VACCUM, THE PURIFIED PYRROLIDONE IS DIVIDED INTO TWO PARTS, ONE PART BEING REACTED WITH AN ALKALI METAL HYDROXIDE TO FORM THE ALKALI METAL SALT OF 2-PYRROLIDONE, THE MIXTURE OF 2-PYRROLIDONE AND ALKALI METAL SALT THEREOF IS CONTACTED WITH CARBON DIOXIDE, THE CARBONATED REACTION MASS IS ADMIXED WITH THE SECOND PORTION OF THE PURIFIED 2-PYRROLIDONE, THE THUS DILUTED, CARBONATED REACTION MASS IS POLYMERIZED TO A CONTROLLED EXTENT AND THE PARTIALLY POLYMERIZED MASS IS EXTRUDED INTO PELLETS, THE PELLETS BEING CURED, AND FREED OF UNREACTED MONOMER AND IMPURITIES TO PROVIDE A FINAL PRODUCT COMPRISING THE PELLETS OF 2-PYRROLIDONE.
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