Redox cure system for acrylic adhesive compositions
    2.
    发明授权
    Redox cure system for acrylic adhesive compositions 失效
    丙烯酸粘合剂组合物的氧化还原固化体系

    公开(公告)号:US4569976A

    公开(公告)日:1986-02-11

    申请号:US662472

    申请日:1984-10-18

    CPC classification number: C09J4/00

    Abstract: Improved cure system for two-part acrylic adhesive compositions comprising, as a first part, a polymerizable composition of a vinyl, especially acrylate or methacrylate, monomer or monomers, optionally a polymer or oligomer, or a polyfunctional methacrylate and a peroxidic catalyst, and a second part, being an activator containing a monosubstituted thiourea, having a heteroatom in the beta or gamma position relative to the nitrogen bearing the substituent. The disclosed catalyst cure system markedly increases the rate or redox initiated polymerization of the acrylate based adhesives, and gives greater on-part life for the activator.

    Abstract translation: 用于两部分丙烯酸粘合剂组合物的改进的固化体系,其包含作为第一部分的乙烯基,特别是丙烯酸酯或甲基丙烯酸酯的可聚合组合物,单体或单体,任选的聚合物或低聚物或多官能甲基丙烯酸酯和过氧化物催化剂,以及 第二部分是含有单取代的硫脲的活化剂,其具有相对于带有取代基的氮的β或γ位置的杂原子。 所公开的催化剂固化体系显着地增加了丙烯酸酯类粘合剂的速率或氧化还原引发的聚合,并且给予活化剂更大的部分寿命。

    Pressure-sensitive hydrophilic laminate structures for use in wound
dressing, transdermal and topical drug delivery
    6.
    发明授权
    Pressure-sensitive hydrophilic laminate structures for use in wound dressing, transdermal and topical drug delivery 失效
    用于伤口敷料,透皮和局部给药的压敏亲水层压结构

    公开(公告)号:US4904247A

    公开(公告)日:1990-02-27

    申请号:US782848

    申请日:1985-10-02

    Abstract: The present invention describes a pressure-sensitive hydrophilic laminate composite comprising contiguous layers of a tacky pressure sensitive hydrophilic polymer blend, and a non-tacky hydrophilic polymer blend. Numerous variations in individual layer formulations allow for a multitude of hydrophilic blend laminate composite structures, which are readily utilizable as wound dressings, and/or transdermal and topical delivery systems incorporating a wide range of bioactive agents. The hydrophilic laminate composite structurese are characterized by ease of application, adhesiveness to skin, high tensile strength, mechanical integrity, transparency, fluid absorbency, and highly effective bacterial barrier properties, and permeability to water vapor, oxygen and drugs and/or bioactive agents. In the preferred embodiments, they are further characterized in their ability to inhibit severe maceration of the wound as well as underlying tissue destruction upon removal.

    Abstract translation: 本发明描述了一种压敏亲水层压复合材料,其包含粘性压敏亲水性聚合物共混物的邻接层和非粘性亲水性聚合物共混物。 单独层制剂的许多变化允许多种亲水混合层压复合结构,其易于用作伤口敷料,和/或包含广泛生物活性剂的透皮和局部递送系统。 亲水性层压复合结构的特征在于易于使用,对皮肤的粘合性,高拉伸强度,机械完整性,透明度,流体吸收性和高效细菌屏障性能,以及对水蒸气,氧气和药物和/或生物活性剂的渗透性。 在优选的实施方案中,它们的进一步特征在于它们能够抑制伤口的严重浸渍以及去除时潜在的组织破坏。

    Thermoplastic elastomeric compositions
    7.
    发明授权
    Thermoplastic elastomeric compositions 失效
    热塑性弹性体组合物

    公开(公告)号:US4306039A

    公开(公告)日:1981-12-15

    申请号:US142986

    申请日:1980-04-23

    Abstract: A non-tacky thermoplastic elastomeric composition which is an optically clear blend of (A) a copolymer of ethyl or butyl acrylate or mixtures thereof with from 2 to 10% by weight of a copolymerizable ethylenic monomer containing an acid group and (B) from 2 to 15%, by weight of the blend, of a water-soluble homopolymer of a vinyl lactam having the structure ##STR1## in which X represents an alkylene bridge having three to five carbon atoms, or from 2 to 30%, by weight of the blend, of a copolymer of said lactam with from 1 to 80 mole percent of a copolymerizable monomer containing a polymerizable ethylenic unsaturation, the vinyl lactam polymer or copolymer having a glass transistion temperature from 20.degree. to 250.degree. C.

    Abstract translation: 一种非粘性热塑性弹性体组合物,其是(A)丙烯酸乙酯或丁酯或其混合物与2-10重量%含有酸基团的可共聚乙烯单体和(B)的共聚物的光学透明共混物, 至15重量%的具有结构“IMAGE”的乙烯基内酰胺的水溶性均聚物,其中X表示具有3至5个碳原子的亚烷基桥,或2至30重量% 所述内酰胺与1至80摩尔%的含可聚合烯属不饱和度的可共聚单体的共聚物的共混物,所述乙烯基内酰胺聚合物或共聚物的玻璃化转变温度为20-250℃。

    Reinforced silicone modified epoxy tape backing
    9.
    发明授权
    Reinforced silicone modified epoxy tape backing 失效
    增强硅胶改性环氧胶带背衬

    公开(公告)号:US4632859A

    公开(公告)日:1986-12-30

    申请号:US637466

    申请日:1984-08-03

    Abstract: A tape backing comprised of a siliconized epoxy resin reinforced with a polyester or polyamide non-woven fabric is described. The reinforcing non-wovens consist of polyester fibers or the more temperature resistant aromatic polyamide fibers. The non-woven reinforced silicone modified epoxy coated tape backing of the present invention has improved thermal, chemical, water, and electrical insulation resistance, and improved lubricity over the prior art backings. Additionally, an important advantage of the silicone modified composition of the present invention is that it is possible to eliminate release coating the backing when used as a tape backing, as the silicone increases the lubricity of the backing; i.e. the adhesion of the adhesive mass is lowered to the extent that no release coating or release liner is required during use.

    Abstract translation: 描述了由聚酯或聚酰胺无纺布增强的硅化环氧树脂组成的胶带背衬。 增强无纺布由聚酯纤维或耐温芳香族聚酰胺纤维组成。 本发明的非织造增强硅氧烷改性环氧树脂涂覆带背衬具有改进的热,化学,水和电绝缘性,并且改善了现有技术背衬的润滑性。 此外,本发明的硅氧烷改性组合物的重要优点在于,当用作胶带背衬时,可以消除背衬的剥离涂层,因为硅树脂增加背衬的润滑性; 即粘合剂的粘附力降低到在使用期间不需要脱模涂层或剥离衬垫的程度。

    Dental restorative composite compositions and filler therefor
    10.
    发明授权
    Dental restorative composite compositions and filler therefor 失效
    牙科修复复合组合物及其填料

    公开(公告)号:US4197234A

    公开(公告)日:1980-04-08

    申请号:US923901

    申请日:1978-07-12

    Inventor: Samuel C. Temin

    CPC classification number: A61K6/083 C08K3/0033

    Abstract: Polyfluorocarbon resin or polychlorofluorocarbon resin, especially polytetrafluoroethylene in powder form is added to a conventional inert inorganic finely divided filler for dental restorative composite compositions, in combination with conventional liquid polymerizable binder systems to provide a composite composition possessing improved mechanical properties, especially wear or abrasion resistance. As little as 1.0% by weight or less of the total weight of filler of the polyfluorocarbon or polychlorofluorocarbon resin powder imparts improved wear. Abrasion superior to conventional amalgams suitable for use on occlusal surfaces resistance is achieved.

    Abstract translation: 将多氟碳树脂或聚氯氟烃树脂,特别是粉末形式的聚四氟乙烯加入用于牙齿修复复合组合物的常规惰性无机微细填料中,与常规的液体可聚合粘合剂体系组合,以提供具有改善的机械性能,特别是耐磨性或耐磨性的复合组合物 。 多氟碳化合物或聚氯氟烃树脂粉末的填料的总重量的1.0重量%或更少,赋予了改善的磨损。 实现了优于适用于咬合面电阻的常规汞齐的磨损。

Patent Agency Ranking