摘要:
A fluororesin including a residue unit of formula (1) and having a haze value equal to 2% or less of a heat-press molded product (thickness 1 mm) with a small haze value of a melt-molded product and a method for producing the same,
Rf1, Rf2, Rf3 and Rf4 each independently represent one of the groups consisting of a fluorine atom, a linear perfluoroalkyl group having 1 to 7 carbon atoms, a branched perfluoroalkyl group having 3 to 7 carbon atoms, and a cyclic perfluoroalkyl group having 3 to 7 carbon atoms, the perfluoroalkyl group may have an ethereal oxygen atom, Rf1, Rf2, Rf3 and Rf4 may be linked to each other to form a ring having 4 or more and 8 or less carbon atoms, and the ring may include an ethereal oxygen atom.
摘要:
The present invention relates to novel compounds, particularly to compounds comprising a photoactive unit, said novel compounds being particularly suitable for compositions and ophthalmic devices as well as to compositions and ophthalmic devices comprising such compounds.
摘要:
An active energy ray curable composition including a polymerization initiator and a polymerizable compound is provided. When the active energy ray curable composition is formed into a cured film on a substrate under the specific condition, the cured film satisfies the following conditions (1) and (2): (1) when the substrate is a polyethylene terephthalate substrate, the cured film on the substrate has a transmission density of from 1.5 to 3.0 that is measured with a transmission densitometer, and (2) when the substrate is a polycarbonate substrate, the cured film on the substrate has a first length (L1) and a second length (L2) before and after a specific tensile test, respectively, and a ratio of L2/L1 ranges from 1.5 to 4.0.
摘要:
Anhydrosugar-based monomers prepared from isosorbide, isomannide, and isoidide and resin systems containing these anhydrosugar-based monomers that are partially to fully bio-based, which may produce materials having properties that meet or exceed the properties of similar petroleum derived vinyl ester resins.
摘要:
Compounds of formula III: and salts thereof are disclosed. Also disclosed are methods for preparing compounds of formula III, intermediates useful for preparing compounds of formula III and methods for preparing compounds and materials from compounds of formula III.
摘要:
A Tulipalin A-based hydroxyl-functionalized (hf) polymer is synthesized by converting, via a ring opening reaction, poly(Tulipalin A) or poly(Tulipalin A-co-acrylic) in the presence of a nucleophilic monomer and a catalyst. The nucleophilic monomer may be, for example, a nitrogen-containing monomer such as Dimethylamine. The poly(Tulipalin A) or the poly(Tulipalin A-co-acrylic) may be prepared, for example, via free radical polymerization using an initiator such as AIBN. Any suitable free radically copolymerizable monomer, such as N,N-Dimethylmethacrylamide, may be used in the preparation of the poly(Tulipalin A-co-acrylic). In some embodiments, an engineered material is prepared from the Tulipalin A-based hydroxyl-functionalized polymer using hydroxyl groups present therein as synthetic handles through which a plethora of useful properties can be directly engineered into the material.
摘要:
In an example, a process for the production of an acrylate polymer is disclosed. The process includes reacting lactide with a bromination material to form a brominated lactide. The process further includes reacting the brominated lactide with an elimination material to form an acrylic monomer, and polymerizing the acrylic monomer to form an acrylate polymer.
摘要:
The present disclosure relates to the preparation of acrylate, alkacrylate, allyl, and polycarbonate derivatives of hydroxy ketal esters, and uses thereof.
摘要:
There is provided an electroactive material having Formula I wherein: Q is the same or different at each occurrence and can be O, S, Se, Te, NR, SO, SO2, P, PO, PO2, and SiR2; R is the same or different at each occurrence and can be hydrogen, alkyl, aryl, alkenyl, or alkynyl; R1 through R10 are the same or different and can be hydrogen, alkyl, aryl, halogen, hydroxyl, aryloxy, alkoxy, alkenyl, alkynyl, amino, alkylthio, phosphino, silyl, —COR, —COOR, —PO3R2, —OPO3R2, or CN.
摘要翻译:提供了具有式I的电活性材料,其中:Q在每次出现时相同或不同,并且可以是O,S,Se,Te,NR,SO,SO 2,P,PO,PO 2和SiR 2; R在每次出现时相同或不同,可以是氢,烷基,芳基,烯基或炔基; R 1至R 10相同或不同,可以是氢,烷基,芳基,卤素,羟基,芳氧基,烷氧基,烯基,炔基,氨基,烷硫基,膦基,甲硅烷基,-COR,-COOR,-PO3R2,-OPO3R2或 CN。
摘要:
Polycarbon biofuels may be made from feedstock such as wood waste, agricultural wastes and waste paper. The feedstock may be cooked under acidic conditions to convert cellulose and similar material in the feedstock into a biofuel that is hydrophobic, readily pelletized, and has a high energy density. The biofuel may be blended with coal or other fuels to provide blended fuels that may be burned in conventional burners. One process forms a slurry of the feedstock, sparges carbon dioxide through the slurry to achieve a pH below 5 and cooks the slurry at temperatures in the range of 170 C to 300 C until conversion of the feedstock to polycarbon biofuel has occurred. The biofuel may be separated from liquids in the slurry by filtration.