摘要:
The invention relates to a liquid crystalline, photo cross-linkable main-chain polymer used as interferentially effective, chromophoric substance for colored paints, in which the main mesogenic groups are disposed at least approximately in a chiral-nematic manner. An etherified cellulose ether or a mixture of several etherified cellulose ethers is used pursuant to the invention as liquid crystalline main-chain polymer or polymers wherein: the cellulose ethers have a molecular weight of 500 to 1,000,000, the anhydroglucose units of the cellulose ethers are etherified with an average degree of molar substitution of 2 to 7 with propylene oxide or ethylene oxide units (C.sub.3 H.sub.6 O- or C.sub.2 H.sub.4 O-units), and the cellulose ethers are etherified with an average degree of molar substitution of 1.5 to 3 with unsaturated hydrocarbon groups (C.sub.r H.sub.2r-1).
摘要翻译:本发明涉及一种液晶,可光交联的主链聚合物,其用作彩色涂料的周边有效的发色物质,其中主要介晶基团至少大致以手性向列的方式设置。 根据本发明,使用醚化的纤维素醚或几种醚化纤维素醚的混合物作为液晶主链聚合物或聚合物,其中:纤维素醚的分子量为500至1,000,000,纤维素醚的脱水葡萄糖单元被醚化 用环氧丙烷或环氧乙烷单元(C 3 H 6 O-或C 2 H 4 O-单元)的平均摩尔取代度为2至7,并且纤维素醚以不饱和烃基(CrH2r)的平均摩尔取代度为1.5至3进行醚化 -1)。
摘要:
The invention relates to painted objects, especially motor vehicle bodies, and effect paints for painting such objects. The effect paint has a color-producing paint layer comprising liquid crystal polymer compounds, especially those based on organopolysiloxanes, and surface-active compounds, especially polysiloxanes and/or polyacrylates. The paint is applied directly to the objects to be painted, e.g. by a spray or dip application. As a result, even convex surfaces can be painted simply, completely, and uniformly with liquid crystal polymers.
摘要:
A process for recycling composite materials that comprise fibers and a matrix includes exposing the composite material to electromagnetic waves in the form of microwaves. The electromagnetic waves induce an introduction of energy into the composite material, leading to a separation of fibers and matrix. The separation operation can be assisted by a suitable solvent.
摘要:
An effect coating material and an effect coating, especially for vehicle bodies, containing interference pigments, in which the interference pigments are composed of three-dimensionally crosslinked, liquid-crystalline, main-chain polymers, which include main-chain mesogens having an at least approximately chiral nematic arrangement, and which are formed from at least one esterified cellulose ether.