会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明专利
    • DE69630260D1
    • 2003-11-13
    • DE69630260
    • 1996-05-24
    • MITSUI CHEMICALS INC
    • MURAKAMI HIDETATSUOMORI SATOSHIWAKATSURU KENJI
    • C08G69/26C08G69/28C08G69/32
    • A process for producing an aromatic polyamide which comprises: (a) a dicarboxylic acid component which consists of 30-100 mol% of terephthalic acid and optionally 0-70 mol% of at least one dicarboxylic acid other than terephthalic acid, and (b) a diamine component which consists of 50-100 mol% of an aliphatic alkylenediamine of 4-25 carbons and optionally 0-50 mol% of at least one alicyclic diamine of 3-25 carbons, said process comprising a first step of performing melt reaction of said dicarboxylic acid with said diamine, thereby giving a low molecular weight condensate having an intrinsic viscosity Ä eta Ü of 0.05-0.6 dl/g, a second step of subjecting it to solid phase polymerization, thereby giving an aromatic polyamide precursor having an intrinsic viscosity Ä eta Ü of 0.5-1.0 dl/g, and a third step of subjecting it to melt polymerization, thereby giving an aromatic polyamide having a desired intrinsic viscosity Ä eta Ü of 0.8-2.5 dl/g. This process permits the industrial production of high molecular weight aromatic polyamides in an economical and efficient manner.
    • 2. 发明专利
    • DE60024652T2
    • 2006-06-22
    • DE60024652
    • 2000-08-09
    • MITSUI CHEMICALS INC
    • MURAKAMI HIDETATSUOKADA KEIJIKAWASAKI MASAAKIICHINO KOTARO
    • C08F210/02B60C1/00C08F210/18C08L21/00C08L23/08
    • A tire provided with a tire tread made from a rubber composition comprising (A) a random copolymer based on non-conjugated cyclic polyene comprising structural units originated from one or more alpha -olefins (A1) and originated from one or more non-conjugated cyclic polyene (A2), the said random copolymer having a content of the structural unit(s) originated from one or more alpha -olefins (A1) in the range of 93 to 70 mole %; a content of the structural unit originated from one or more non-conjugated cyclic polyene (A2) in the range of 7 to 30 mole %; an intrinsic viscosity Ä eta Ü , determined in decalin at 135 DEG C, in the range of 0.01 to 20 dl/g; a glass transition temperature (Tg) of not higher than 40 DEG C; and an iodine value in the range of 50 to 150, and (B) a rubber based on diene, in a weight proportion of äthe random copolymer based on non-conjugated cyclic polyene (A)ü versus äthe rubber based on diene (B)ü in the range from 60/40 to 0.1/99.9 exhibits a superior braking performance and, compatible therewith, a superior driving fuel cost aspect.
    • 5. 发明专利
    • DE60120930D1
    • 2006-08-03
    • DE60120930
    • 2001-07-24
    • MITSUI CHEMICALS INC
    • MURAKAMI HIDETATSUTAKAHASHI MAMORUIKENAGA SHIGENOBU
    • C08F210/02C08F4/659C08F4/6592C08F210/16C08L23/02C08L23/08
    • The ethylene copolymer of the invention is a copolymer (A-1) of ethylene and an alpha -olefin of 3 to 20 carbon atoms and has the following properties: (a) the melt index (MI2) at 190 DEG C under a load of 2.16 kg is in the range of 0.0001 to 1000 g/10 min, (b) the density is not more than 0.899 g/cm , (c) the relationship between a vinyl group amount and MI2 of the polymer satisfies the following expression (c) : (vinyl group amount : number of vinyl groups/1000 carbon atoms) ≤ 0.018038+0.003259xlog(MI2) and (d) the relationship between a vinylidene group amount and MI2 of the polymer satisfies the following expression (d) : (vinylidene group amount: number of vinylidene groups/1000 carbon atoms) ≤ 0.018038+0.003259xlog(MI2) The ethylene copolymer has a melt index, a density, a vinyl group amount and a vinylidene group amount in the specific ranges, and hence the copolymer is excellent in mechanical properties, molding processability, heat stability in the molding process and heat aging resistance.. The ethylene copolymer of the invention can be used for various molded products, particularly films and sheets, resin modifiers, and elastomeric products.
    • 6. 发明专利
    • DE60024652D1
    • 2006-01-12
    • DE60024652
    • 2000-08-09
    • MITSUI CHEMICALS INC
    • MURAKAMI HIDETATSUOKADA KEIJIKAWASAKI MASAAKIICHINO KOTARO
    • B60C1/00C08F210/02C08F210/18C08L21/00C08L23/08
    • A tire provided with a tire tread made from a rubber composition comprising (A) a random copolymer based on non-conjugated cyclic polyene comprising structural units originated from one or more alpha -olefins (A1) and originated from one or more non-conjugated cyclic polyene (A2), the said random copolymer having a content of the structural unit(s) originated from one or more alpha -olefins (A1) in the range of 93 to 70 mole %; a content of the structural unit originated from one or more non-conjugated cyclic polyene (A2) in the range of 7 to 30 mole %; an intrinsic viscosity Ä eta Ü , determined in decalin at 135 DEG C, in the range of 0.01 to 20 dl/g; a glass transition temperature (Tg) of not higher than 40 DEG C; and an iodine value in the range of 50 to 150, and (B) a rubber based on diene, in a weight proportion of äthe random copolymer based on non-conjugated cyclic polyene (A)ü versus äthe rubber based on diene (B)ü in the range from 60/40 to 0.1/99.9 exhibits a superior braking performance and, compatible therewith, a superior driving fuel cost aspect.