摘要:
The purpose of the present invention is to provide: a novel polymer which has an electro-optical effect; a method for producing such a polymer; and a light control element which uses such a polymer. The present invention relates to a non-crosslinkable polycarbonate which contains a moiety that has electro-optical characteristics. The present invention also relates to a method for producing a polycarbonate, which comprises a step for reacting a bisphenol compound, a diol compound that has electro-optical characteristics, and a phosgene in the presence of an acid binding agent and solvent. The present invention also relates to a light control element which comprises such polycarbonate.
摘要:
A molded article such as a resin window or a lamp lens for vehicles which is formed from a polycarbonate and excellent in heat resistance, weather resistance, low water absorption, surface hardness and low-temperature impact properties. The molded article is formed from a polycarbonate which contains a unit (A) represented by the following formula (A) in an amount of 50 mol% or more based on the total of all recurring units and has a maximum impact energy of 20 J or more in a high-speed surface impact test based on ASTM D3763 in a -20°C environment and a brittle fracture rate of 50 % or less.
摘要:
The purpose of the present invention is to provide a polymer having excellent compatibility with thermoplastic resins. The present invention is a polymer (B), which essentially contains units represented by the following formulas (1), (2) and (3), wherein the number of moles of the unit (1) is 0 to 95, the number of moles of the unit (2) is 0 to 50, and the number of moles of unit (3) is 2 to 80 when the total number of moles of the units (1), (2) and (3) is 100.
in the units (1) to (3), "X" is a recurring unit having a benzene ring, in the unit (2), -CH 3 is a methyl group substituted for the hydrogen atom of the benzene ring of "X", "m" is an integer of 1 to 6 indicative of the number of the methyl group, the unit (3) is a unit obtained by substituting the hydrogen atom of -CH 3 in the unit (2) by a substituent "Z" derived from a carboxylic acid or anhydride thereof, "n" is an integer of 1 to 6 indicative of the number of substitutions, l+n=m, and the unit (3) is a unit in which "n" is 1, 2, 3, 4, 5, 6 or a combination thereof.
摘要:
A polycarbonate resin composition comprising a polycarbonate resin and 0.001 to 1 parts by weight of an N-R type (R represents an alkyl group) hindered amine-based optical stabilizer per 100 parts by weight of the polycarbonate resin, wherein the polycarbonate resin comprises 40 mol% or more of a recurring unit (A) represented by the following formula and satisfies the following formulas (i) to (v), and the resin composition has excellent heat resistance, a low water absorption coefficient and high transparency, and suppresses deterioration during long-term use: (i) a metal compound comprising a negative ion represented by the following formula (B) and a positive ion constituted by a metal is used as a polymerization catalyst in an amount of 1 × 10 -9 to 1 × 10 -5 molar equivalent relative to the total diol compounds used for polymerization; (ii) the specific viscosity measured with a methylene chloride solution at 20°C is 0.23 to 0.60; (iii) the glass transition temperature is 100°C to 160°C; (iv) the saturated water absorption coefficient is 2.5% or less; and (v) the relationship between the glass transition temperature (Tg°C) and the saturated water absorption coefficient (Wa%) satisfies the following formula (I): 2.5 ‰¤ Tw value = Tg × 0.04 ˆ’ Wa wherein R 1 is an alkylene group, a cycloalkylene group, or an arylalkylene group which has 1 to 22 carbon atoms and may be linear or branched.
摘要:
A flame retardant resin composition containing 1 to 100 parts by weight of (B) an organophosphorus compound (component B) presented by the following formula (1) per 100 parts by weight of (A) a resin component (component A) containing at least 60 wt% of an acrylic resin has high flame retardancy, high transparency and satisfactory physical properties.
(wherein X 1 and X 2 are the same or different, and represent alkyl groups substituted with aromatic groups represented by the following formula (2):),
(wherein AL represents a branched or linear aliphatic hydrocarbon group having 1 to 5 carbon atoms, Ar represents a phenyl group, a naphthyl group, or an anthryl group each optionally substituted, n represents an integer of 1 to 3, and Ar can be bonded to any carbon atom in AL.)
摘要:
A copolycarbonate having a low water absorption coefficient and excellent heat resistance, low temperature characteristics and surface hardness is provided. The copolycarbonate (Z) of the present invention contains a unit (A) represented by the following formula and a unit (B) represented by the following formula (B) as main recurring units, the (A/B n=1 ) molar ratio of the unit (A) and the unit (B n=1 ) being 40/60 to 99/1. The unit (B n=1 ) is a single unit constituting a block.
(R 1 is an alkylene group or cycloalkylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. R 2 is an alkylene group, cycloalkylene group or arylene group, all of which may be substituted by an aromatic group having 6 to 12 carbon atoms. "r" and "s" are each independently an integer of 0 to 4. "l" is 0; "m" is 0; and "n" is an integer of 2 to 100; or "l" is 1; "m" is 1; and "n" is an integer of 1 to 100.)
摘要:
To provide a non-halogen-based flame retardant for obtaining a flame-retardant product having high flame retardancy and a good appearance and a flame-retardant product comprising the same. An organic phosphorus-based compound which satisfies the following requirements (i) to (viii) and is represented by the following formula (1): (i) the organic purity should be not lower than 98 %; (ii) the solubility in 20°C water should be not higher than 0.1 g/100 g of water; (iii) the total halogen component content should be not higher than 1,000 ppm; (iv) the total volatile organic matter content should be not higher than 800 ppm; (v) the Δ pH value should be not larger than 1.0; (vi) the volume standard median diameter should be not larger than 30 µm; (vii) the maximum particle diameter should be not larger than 200 µm; and (viii) the standard deviation represented by the following formula (6) should be not larger than 20 µm. Standard deviation = d 84 % + d 16 % / 2 d84 %: particle diameter at a point where the cumulative curve becomes 84 % (µm) d16 %: particle diameter at a point where the cumulative curve becomes 16 % (µm)
(In the above formula, R 2 and R 5 may be the same or different and are each a phenyl group which may have a substituent, naphthyl group which may have a substituent, anthryl group which may have a substituent, or branched or linear alkyl group having 1 to 4 carbon atoms which may have an aromatic substituent. R 1 , R 3 , R 4 and R 6 may be the same or different and are each a hydrogen atom, branched or linear alkyl group having 1 to 4 carbon atoms, phenyl group which may have a substituent, naphthyl group which may have a substituent, or anthryl group which may have a substituent.)