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    • 5. 发明专利
    • NEUTRAL COATING FILM
    • JP2000351862A
    • 2000-12-19
    • JP2000119180
    • 2000-04-20
    • NOVARTIS AGCOMMW SCIENT IND RES ORG
    • GRIESSER HANS JOERGKINGSHOTT PETER
    • G02C7/04C08J3/28C08J7/04
    • PROBLEM TO BE SOLVED: To obtain a composite material which has a wettable surface significantly made hardly susceptible to protein adsorption (staining) by forming, on the surface of a bulk material, a hydrophilic coating film which is covalently bonded to reactive groups on the surface and has pH-sensitive wettability- imparting groups partly modified with a neutralizing agent. SOLUTION: The composite material comprises a bulk material and a hydrophilic coating film. The film is covalently bonded, directly or indirectly through functional groups of an oligo-functional organic binding agent, to reactive groups on the surface of the bulk material and has many pH-sensitive wettability-imparting groups selected from among COOH, NH2, and SO3H groups, the pH-sensitive groups having been partly modified with a neutralizing agent selected from among organic acids and organic bases. Preferably, the reactive groups originally exist on the surface of the bulk material or are attached thereto by a plasma treatment. Preferably, the hydrophilic coating film is based on a polysaccharide or a (meth)acrylic acid (co)polymer.
    • 9. 发明申请
    • COATING PROCESS
    • 涂层工艺
    • WO0130512A3
    • 2001-12-27
    • PCT/EP0010529
    • 2000-10-25
    • NOVARTIS AGCOMMW SCIENT IND RES ORGPASIC PAULGRIESSER HANS JOERGKAMBOURIS PETERCHABRECEK PETER
    • PASIC PAULGRIESSER HANS JOERGKAMBOURIS PETERCHABRECEK PETER
    • G02C7/04A61L27/34B05D1/18B05D7/00C08J7/16C09D151/06G02B1/04G02B1/10
    • B82Y30/00A61L27/34B05D1/185B05D7/00B82Y40/00C08J7/16G02B1/043
    • The invention relates to a process for coating a material surface, comprising the steps of: (a) covalently binding a compound comprising an ethylenically unsaturated double bond to the material surface; (b) polymerizing a monomer comprising a reactive or crosslinkable group on the surface and thereby providing a primary polymer coating comprising reactive or crosslinkable groups; (c) in case of a monomer comprising a reactive group in step (b) reacting the reactive groups of the primary coating with a further compound comprising an ethylenically unsaturated double bond and graft-polymerizing a hydrophilic monomer and optionally a co-monomer having a crosslinkable group onto the primary coating obtained according to step (b) and;(d) in case of crosslinkable groups being present in step (b) or (c) initiating crosslinking of said groups. The coated articles that are obtainable by the process of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus useful for the manufacture of biomedical articles such as ophthalmic devices.
    • 该方法包括以下步骤:(a)将包含烯属不饱和双键的化合物共价结合到材料表面; (b)在表面上聚合包含反应性或可交联基团的单体,从而提供包含反应性或可交联基团的初级聚合物涂层; (c)在步骤(b)中包含反应性基团的单体的情况下,使底涂层的反应性基团与另一种包含烯键式不饱和双键的化合物反应并接枝聚合亲水单体和任选的共聚单体,所述共聚单体具有 (b)和(d)在步骤(b)或(c)中存在可交联基团的情况下,引发所述基团的交联。 可通过本发明的方法获得的涂覆制品具有关于与基材的粘合性,耐久性,亲水性,润湿性,生物相容性和渗透性的期望特性,因此可用于制造生物医学制品如眼科装置。