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79results about How to "Avoid light transmission" patented technology

Bifunctional polymerizable compound, liquid crystal composition, optical anisotropic material and optical element

InactiveUS20100038587A1Suppress broadening of rectangle of selected reflectionPrevent transmittance lossLiquid crystal compositionsThin material handlingHydrogen atomMethyl group
A bifunctional polymerizable compound represented by the following formula:
A-E1-E2-(E3)k-E4-B
wherein
A is CH2═CR1—COO-(L1)m-;
B is CH2═CR2—COO-(L2)n-;
    • each of R1 and R2 which are independent of each other, is a hydrogen atom or a methyl group;
    • each of L1 and L2 is —(CH2)p— wherein p is each independently an integer of from 2 to 8, each of m and n which are independent of each other, is 0 or 1, provided that when at least one of m and n is 1, there may be an etheric oxygen atom between the carbon-carbon linkage of —(CH2)p— or at the terminal on the side bonded to E1 or E4, and at least one hydrogen atom may be substituted by a fluorine atom, a chlorine atom or a methyl group;
    • each of E1 and E4 is a 1,4-phenylene group; and
    • one of E2 and E3 is a trans-1,4-cyclohexylene group and the other is a trans-1,4-cyclohexylene group or a 1,4-phenylene group, k is 0 or 1, provided that when k is 0, E2 is a trans-1,4-cyclohexylene group, and the 1,4-phenylene group and the trans-1,4-cyclohexylene group as E1 to E4 may be each independently such that at least one hydrogen atom bonded to a carbon atom(s) constituting the cyclic group may be substituted by a fluorine atom, a chlorine atom or a methyl group.
Owner:ASAHI GLASS CO LTD

Trackless auto-clean high-airtightness sliding door/window

The invention discloses a trackless auto-clean high-airtightness sliding door/window, comprising a door/window frame and a door leaf/window sash; tracks on a lower frame member of the door/window frame include front and rear concave flat tracks formed among front, middle and rear vertical frame bars on the flat bottom of the lower frame member; the door leaf/window sash is disposed in the door/window frame correspondingly between the upper and lower frame members, and the door leaf/window sash is slidably moved in the corresponding concave flat tracks of the lower frame member through a multifunctional integrated roller mechanism at the bottom; in the multifunctional integrated roller mechanism, horizontal lateral guide wheels in rolling contact with the lateral sides of the concave flat tracks are arranged in left and right bodies of roller carriers, a rolling wheel in rolling contact with the bottom of the corresponding concave flat track is arranged in the roller carrier between the left and right horizontal lateral guide wheels, and the left and right ends of the roller carrier are provided with plastic sheets or rubber sheets or flexible brushes abutted to the bottoms of the concave flat tracks. The trackless auto-clean high-airtightness sliding door/window can provide effective prevention of separation, has good safety, allows water and dust in the concave flat tracks t be cleaned in time, and is airtight and opaque.
Owner:方明丰
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