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Patent Agency Ranking1.发明授权Copolymers having prevailing polyoxymethylene structure,products derived therefrom,and processes for producing said copolymers 失效具有预聚多羟基甲基结构的共聚物，其衍生的产物和用于生产上述共聚物的方法
公开(公告)号：US3567690A
公开(公告)日：1971-03-02
申请号：US3567690D
申请日：1967-02-24
Applicant: MONTEDISON SPA
Inventor： PREGAGLIA GIANFRANCO , ROFFIA PAOLO , ZAMBONI VALENTINO
CPC classification number: C08G2/18
Abstract: PREPARATION OF NEW POLYOXYMETHYLENE COPOLYMERS CONSISTING OF AT LEAST 95% OF OXYMETHYLENE UNITS SEPARATED BY OXYALKYLENIC UNITS BOUND TO SIDE GROUPS CONTAINING DOUBLE BONDS; THESE PRODUCTS HAVE A LOW VISCOSITY IN THE MOLTEN STATE SINCE PRACTICALLY NO CROSS-LINKING OCCURS DURING THE REACTION OF COPOLYMRIZATION. A CONTROLLED CROSS-LINKING OF THE COPOLYMERS IS THEN CARRIED OUT THROUGH THE OLEFINIC DOUBLE BOND PRESENT THEREIN TO OBTAIN PRODUCTS WITH INCREASED VISCOSITY IN THE MOLTEN STATE OR HAVING THE CHARACTERISTICS OF A THERMOSETTING RESIN.
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2.发明授权
公开(公告)号：US3488323A
公开(公告)日：1970-01-06
申请号：US3488323D
申请日：1966-05-13
Applicant: MONTEDISON SPA
Inventor： PREGAGLIA GIANFRANCO , POZZI GIANCARLO , ROFFIA PAOLO
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公开(公告)号：US3567688A
公开(公告)日：1971-03-02
申请号：US3567688D
申请日：1968-03-19
Applicant: MONTEDISON SPA
Inventor： PREGAGLIA GIANFRANCO , BINAGHI MARCO , ROFFIA PAOLO
CPC classification number: C08G2/18
Abstract: POLYOXYMETHYLENIC COPOLYMERS HAVING SUPERIOR PROPERTIES CONSISTING OF REPEATING OXYMETHYLENIC UNITS AND OF OXYALKYLENIC UNITS FORMED BY OPENING OF SUBSTANITALLY ONLY ONE OF THE RINGS OF 2,3-ETHYLENE-DIOXYDIOXANE. POLYOXYMETHYLENIC COPOLYMERS PREPARED BY REACTING TRIOXANE WITH 2,3-ETHYLENEDIOXYDIOXANE.
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公开(公告)号：US3492271A
公开(公告)日：1970-01-27
申请号：US3492271D
申请日：1965-02-26
Applicant: MONTEDISON SPA
Inventor： PREGAGLIA GIANFRANCO , BINAGHI MARCO , ROFFIA PAOLO
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公开(公告)号：US3422073A
公开(公告)日：1969-01-14
申请号：US3422073D
申请日：1966-04-04
Applicant: MONTEDISON SPA
Inventor： PREGAGLIA GIANFRANCO , POZZI GIANCARLO , ROFFIA PAOLO
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