发明名称 |
Propylene polymer, molded object thereof, and process for producing propylene polymer |
摘要 |
The propylene polymer of the invention is transparent and has good low-temperature heat-sealability and scratch resistance, and is favorable to wrapping and packaging films. (1) The polymer has a melting point, Tm (° C.), measured through differential scanning calorimetry, of 110<=Tm<=140; (2) its heat of fusion DeltaH (J/g) and melting point Tm (° C.) satisfy DeltaH>=0.45xTm+22; (3) the half-value width Th (° C.) of the peak top of its elution curve obtained in programmed-temperature fractionation is Th<=5; and (4) its intrinsic viscosity [eta] (dl/g) measured in a solvent of tetralin at 135° C. falls between 0.5 and 5.
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申请公布号 |
US6800706(B1) |
申请公布日期 |
2004.10.05 |
申请号 |
US20010784444 |
申请日期 |
2001.02.26 |
申请人 |
IDEMITSU PETROCHEMICAL CO., LTD. |
发明人 |
KANAMARU MASAMI;MINAMI YUTAKA;KAKIGAMI KOJI;FUNABASHI HIDEO |
分类号 |
C08F2/34;C08F4/64;C08F4/645;C08F4/659;C08F4/6592;C08F10/06;C08F110/06;C08F210/06;(IPC1-7):C08F4/52 |
主分类号 |
C08F2/34 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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