ALLYLIC POLYSULFANES
    12.
    发明申请
    ALLYLIC POLYSULFANES 有权
    各种聚合物

    公开(公告)号:US20100274037A1

    公开(公告)日:2010-10-28

    申请号:US12514370

    申请日:2007-11-12

    CPC classification number: C07C321/18 C07C319/24

    Abstract: Diallylic polysulfides (polysulfanes) are provided with sulfur chain lengths of 9 to 22. Also provided are bis(2-methyl-2-propenyl) polysulfides with sulfur chain lengths of 3 to 22. Also provided are 2-substituted bis(2-propenyl) polysulfides with sulfur chain lengths of 3 to 20. Also provided are the 2-cycloalken-1-yl polysulfides, 2-cyclohexen-1-yl polysulfides and 2-cyclopenten-1-yl polysulfides, with sulfur chain lengths of 3 to 20. Also provided are processes for extending the sulfur chain length of diallylic polysulfides and 2-substituted analogues thereof and allyl methyl polysulfides by bringing such compounds into contact with elemental sulfur and heating, or by mixing with molten sulfur.

    Abstract translation: 二硫代多硫化物(聚硫烷)的硫链长度为9-22。还提供硫链长度为3至22的双(2-甲基-2-丙烯基)多硫化物。还提供了2-取代的双(2-丙烯基 )多硫化物,硫链长度为3至20.还提供了2-环烯烃-1-基多硫化物,2-环己烯-1-基多硫化物和2-环戊烯-1-基多硫化物,硫链长度为3至20 还提供了通过使这些化合物与元素硫接触并加热或通过与熔融硫混合来延长二烯基多硫化物及其2-取代的类似物和烯丙基甲基多硫化物的硫链长度的方法。

    Stress relaxation in crosslinked polymers
    18.
    发明授权
    Stress relaxation in crosslinked polymers 有权
    交联聚合物中的应力松弛

    公开(公告)号:US08404758B2

    公开(公告)日:2013-03-26

    申请号:US13109400

    申请日:2011-05-17

    Abstract: The invention provides methods for inducing reversible chain cleavage of polymer chains in a crosslinked polymeric material. Reversible cleavage of the polymer backbone is capable of relieving stress in the polymeric material as the bonds reform in a less stressed state. The invention also provides methods for making polymeric materials capable of reversible chain cleavage, materials made by the methods of the invention, and linear monomers containing reversible chain cleavage groups which are useful in the materials and methods of the invention.

    Abstract translation: 本发明提供诱导交联聚合物材料中聚合物链可逆链断裂的方法。 聚合物主链的可逆切割能够缓解聚合物材料中的应力,因为键在较小应力状态下改性。 本发明还提供了制备能够进行可逆链断裂的聚合材料的方法,通过本发明的方法制备的材料和可用于本发明的材料和方法的可逆链裂解基团的线型单体。

    Dental material and composition
    19.
    发明申请
    Dental material and composition 审中-公开
    牙科材料及组成

    公开(公告)号:US20040039080A1

    公开(公告)日:2004-02-26

    申请号:US10399767

    申请日:2003-04-22

    CPC classification number: C08F22/105 A61K6/083 C08L33/14

    Abstract: Disclosed is a dental material comprising a sulfur-containing unsaturated carboxylic acid ester compound having a substituent containing a sulfur atom and at least two (meth)acrylic acid residues through an oxygen atom bonded to a secondary or tertiary carbon atom, specifically, a dental material comprising a polymerizable monomer (A) represented by the following formula (1): 1 wherein R11 is a divalent organic group, X11 is an oxygen atom, a sulfur atom, nullCOOnull group or null(CH2)qX12null group (X12 is an oxygen atom or a sulfur atom, and q is an integer of 1 to 3), R12 is a hydrogen atom or an alkyl group, R13 is a substituent containing a sulfur atom, and R14 is a hydrogen atom or a methyl group, or a dental material comprising a polymerizable monomer (A) which is liquid at ordinary temperature and has a viscosity of 100 to 1,000,000 cps. Also disclosed is a dental composition comprising the polymerizable monomer (A), a polymerization initiator (B) and a filler (C). The dental material and the dental composition are excellent in X-ray opacity, transparency, curability and stain resistance, and they have small polymerization shrinkage.

    Abstract translation: 公开了一种牙科材料,其包含具有含硫原子的取代基的含硫不饱和羧酸酯化合物和通过与二级或三级碳原子键合的氧原子的至少两个(甲基)丙烯酸残基,具体地说,是牙科材料 包括由下式(1)表示的可聚合单体(A):其中R11是二价有机基团,X11是氧原子,硫原子,-COO-基或 - (CH2)qX12-基团(X12是 氧原子或硫原子,q为1〜3的整数),R 12为氢原子或烷基,R 13为含有硫原子的取代基,R 14为氢原子或甲基,或者 牙科材料包括在常温下为液体并且具有100至1,000,000cps的粘度的可聚合单体(A)。 还公开了包含可聚合单体(A),聚合引发剂(B)和填料(C)的牙科用组合物。 牙科用材料和牙科用组合物的X射线不透明性,透明性,固化性,耐污染性优异,聚合收缩小。

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