公开(公告)号：US06261752B1

公开(公告)日：2001-07-17

申请号：US09482674

申请日：2000-01-13

Applicant: Paola Puppo ,  Alberto Valsecchi ,  Carlo Barlocco ,  Luisa Tavella

Inventor： Paola Puppo ,  Alberto Valsecchi ,  Carlo Barlocco ,  Luisa Tavella

IPC: G03C1835

CPC classification number: G03C1/825 ,  A61K9/2866 ,  C11D3/226 ,  C11D17/0039

Abstract: One object of the present invention is to provide a mixture composed of 1) a cellulose ether derivative esterified at least with a biprotic acid group derivative expressed by the formula HOOC—B—COOH (I), wherein B is a linear aliphatic group represented by (CH2)x with x a positive integer from 1 to 5 or is a 5-member or 6-member cycloaliphatic group and 2) a cellulose or cellulose derivative esterified at least with a phthalic acid derivative represented by the following formula (II). wherein R1 is an all group and y is a positive integer from 0 to 3. Said mixture shows an enhanced stability against hydrolysis when subjected to conditioning at high relative humidity and temperature. The composition may be useful in order to get antihalation layer on photographic films as well as enteric coating of pharmaceutical dosage and for controlled-release applications such as for cleaning formulation.

Abstract translation: 本发明的一个目的是提供一种由以下物质组成的混合物：1）至少与由式HOOC-B-COOH（I）表示的双相酸基衍生物酯化的纤维素醚衍生物，其中B是由 （CH 2）x，xa为1〜5的正整数，或为5元环或6元环脂肪基，2）至少与下式（II）表示的邻苯二甲酸衍生物酯化的纤维素或纤维素衍生物。 R1是全部组，y是0至3的正整数。当在高相对湿度和温度下进行调理时，所述混合物显示出增强的抗水解稳定性。组合物可用于在照相胶片上获得防晕层 以及用于药物剂量和控制释放应用的肠溶衣，例如用于清洁制剂。

公开(公告)号：US5914222A

公开(公告)日：1999-06-22

申请号：US936125

申请日：1997-09-24

Applicant: Eric D. Morrison ,  Paola Puppo ,  Alberto Valsecchi ,  Elio Martino ,  William L. Kausch ,  Renzo Torterolo

Inventor： Eric D. Morrison ,  Paola Puppo ,  Alberto Valsecchi ,  Elio Martino ,  William L. Kausch ,  Renzo Torterolo

IPC: C08F214/08 ,  C08K3/20 ,  C09D127/08 ,  C09D133/02 ,  C09D133/06 ,  C09D135/00 ,  C09K3/16 ,  G03C1/005 ,  G03C1/053 ,  G03C1/85 ,  G03C1/89

CPC classification number: C09K3/16 ,  G03C1/005 ,  G03C1/053 ,  G03C1/85 ,  G03C1/853 ,  G03C1/89

Abstract: A photographic element comprising a polymeric film base, a silver halide emulsion layer, and an antistatic layer comprising a colloidal vanadium oxide and a vinyl addition polymer dispersion in a dry weight ratio of from 1:30 to 1:500. The antistatic layer may be present as a backing layer on the side of the base opposite the silver halide emulsion layer, as a subbing layer between the base and the emulsion layer in a single or double side coated photographic element, and/or as a subbing layer between the base and a different backing layer. No barrier layer is used over the antistatic layer.

Abstract translation: 包含聚合物膜基材，卤化银乳剂层和包含胶体氧化钒和乙烯基加成聚合物分散体的干燥重量比为1:30至1:500的抗静电层的照相元件。 抗静电层可以作为背衬层存在于与卤化银乳剂层相对的一侧上，作为在单面或双面涂布的照相元件中的基底和乳剂层之间的底层，和/或作为底层 基底和不同背衬层之间的层。 在抗静电层上不使用阻隔层。

公开(公告)号：US5484693A

公开(公告)日：1996-01-16

申请号：US116515

申请日：1993-09-07

Applicant: Alberto Valsecchi ,  Omar Farooq

Inventor： Alberto Valsecchi ,  Omar Farooq

IPC: G03C1/89 ,  G03C1/85

CPC classification number: G03C1/89

Abstract: Polymeric film bases at least one side of which is coated with an antistatic layer comprising the reaction product of (a) a water-soluble, electrically conductive polymer containing carboxylic groups and (b) a polyfunctional epoxide crosslinking agent, and photographic elements comprising said film bases, wherein said conductive polymer is a copolymer of a water soluble salt of styrene sulfonic acid and maleic acid having a weight average molecular weight of 100,000 to 350,000 and a water soluble salt of styrene sulfonic acid to maleic acid molar ratio of at least 2:1 up to 9:1.

Abstract translation: 聚合物膜基底的至少一侧涂覆有抗静电层，其包含（a）含有羧基的水溶性导电聚合物和（b）多官能环氧化物交联剂的反应产物，以及包含所述膜的照相元件 碱，其中所述导电聚合物是苯乙烯磺酸的水溶性盐和重均分子量为100,000至350,000的马来酸和苯乙烯磺酸的水溶性盐与马来酸的摩尔比至少为2:1的共聚物， 1到9：1。

公开(公告)号：US4914018A

公开(公告)日：1990-04-03

申请号：US278358

申请日：1988-12-01

Applicant: Mauro Besio ,  Alberto Valsecchi

Inventor： Mauro Besio ,  Alberto Valsecchi

IPC: G03C1/89

CPC classification number: G03C1/89 ,  Y10S430/162 ,  Y10T428/31884 ,  Y10T428/31986

Abstract: An improved antistatic base comprises a polymeric support film having coated thereon in sequence a first antistatic layer comprising a quaternary polyelectrolyte compound and a polymeric hydrophobic binder and a second protective layer comprising a polymeric hydrophobic binder, wherein said quaternary polyelectrolyte compound is a homopolymer or a copolymer of a diallyldialkylammonium salt compound.The antistatic base is particularly useful as a support for light-sensitive silver halide photographic elements.