JP2003201322A5 - - Google Patents

Claims (23)

  A propylene polymer main chain having a stereoblock structure containing an isotactic block, a side chain containing a carboxylic acid group or an acid anhydride group or a carboxylic acid ester group, and 10% by weight in toluene at 25 ° C. A propylene-based polymer having an insoluble content of 1% by weight or less based on the total polymer when dissolved at a concentration.   The propylene polymer main chain according to claim 1, wherein the propylene polymer main chain is produced by a single site catalyst.   3. The propylene polymer main chain, when dissolved in heptane at 98 ° C. at a concentration of 10% by weight, its insoluble content is 1% by weight or less with respect to the total polymer. Propylene polymer. For the propylene polymer main chain, a peak derived from the carbon atom of the methyl group of the propylene unit chain part consisting of a head-to-tail bond was observed by ¹³ C-NMR, and the peak attributed to the pentad represented by mmmm When the chemical shift of the peak top is 21.8 ppm, the ratio of the peak area S ₁ having 21.8 ppm as the peak top to the total peak area S appearing from 19.8 ppm to 22.1 ppm (S ₁ / S ) 10% or more, propylene-based polymer according to any one of claims 1 to 3, characterized in that 60% or less.   For propylene polymer main chain, ¹³ In C-NMR, when observing a peak derived from the carbon atom of the methyl group of the propylene unit chain part consisting of a head-to-tail bond, the area of the peak (mmmr) having a peak top of 21.5 to 21.7 ppm S ₂ 4 + 2S ₁ / S ₂ The propylene-based polymer according to claim 4, wherein S, S ₁ , S ₂ Is as defined in claim 4). When the peak derived from the carbon atom of the methyl group of the propylene unit chain part consisting of a head-to-tail bond was observed for the propylene polymer main chain by ¹³ C-NMR, the following characteristics (1) to (4) were observed. 6. The propylene-based polymer according to claim 4 or 5 , wherein S, S ₁ and S ₂ are as defined in claim 4 or 5 .
(1) the area ratio of the area S ₃ upon the S ₃ peaks having a peak top of _{20.3~20.5ppm (rrrr) (S 3 /} S) is 0.2% or more, 3% or less And
(2) Ratio area of the area S ₄ upon the S ₄ peak to peak top of _{20.6~20.8ppm (rmrm) (S 4 /} S) is 0.3% or more, 7% or less And
(3) The area of S ₄ is larger than the area of S ₃ ,
(4) the area of S _{2 is, 25> 4 + 2S 1 /} S 2> 5 is that. When the peak derived from the carbon atom of the methyl group of the propylene unit chain part consisting of a head-to-tail bond was observed for the propylene polymer main chain by ¹³ C-NMR, the following characteristics (1) to (4) were observed. The propylene-based polymer according to claim 6 , comprising:
(1) The ratio of area S ₁ (S ₁ / S) is 30% or more and 50% or less, and (2) the ratio of area S ₃ (S ₃ / S) is 1% or more and 3% or less,
(3) The ratio of area S ₄ (S ₄ / S) is 4% or more and 7% or less,
(4) The area of S ₂ is 10> 4 + 2S ₁ / S ₂ > 7. Propylene polymer main chain has a weight average molecular weight Mw measured by GPC is 5,000 or more, propylene-based polymer according to any one of claims 1 to 7 200,000 or less. Propylene polymer backbone, according to any one of claims 1 to 8, the crystal fusion heat of melting point (Tm) measured by DSC is characterized in that there is no clear peak corresponding to the above 1joule / g Propylene polymer. The propylene-based polymer according to any one of claims 1 to 9 , wherein the single-site catalyst is a C ₁ -symmetric answer-metallocene compound having a transition metal-containing bridging group. The propylene polymer main chain and / or the propylene-based polymer is eluted at a temperature rising elution fraction with o-dichlorobenzene, and substantially all components are eluted at 60 ° C or lower. 11. The propylene polymer according to any one of 10 above. The carboxylic acid group or acid anhydride group or carboxylic acid ester group of the side chain in claim 1 is introduced by graft copolymerizing a polymerizable compound to the propylene polymer main chain. The propylene polymer according to any one of to 11 . The propylene-based polymer according to claim 12 , wherein the polymerizable compound is an unsaturated carboxylic acid derivative component comprising an unsaturated carboxylic acid having 3 to 25 carbon atoms, an acid anhydride thereof or an ester thereof. The propylene-based polymer according to claim 13, wherein the unsaturated carboxylic acid derivative component comprising an unsaturated carboxylic acid having 3 to 25 carbon atoms, an acid anhydride or an ester thereof is maleic anhydride.   The propylene-based polymer according to any one of claims 1 to 14, which has the following property (b).
  (B) Adhesion according to an adhesion test to a polypropylene substrate (cross-cut tape method) is 50/100 or more. A propylene-based polymer having the following characteristics (a) and (b):
(A) When dissolved in toluene at 25 ° C. at a concentration of 10% by weight, the insoluble content is 1% by weight or less based on the total polymer,
(B) Adhesiveness to a polypropylene base material by a cross-cut tape method (50/100 or more). Propylene polymer solubility parameter of 11 (cal / cm ^{3) 1/2} adhesive composition obtained by dissolving 1 part by weight or more of the following solvents according to any one of claims 1-16. An adhesive for olefin polymers having crystallinity, comprising the propylene polymer according to any one of claims 1 to 16 . The adhesive for olefin polymers which has crystallinity consisting of the composition of Claim 17 .   The method for producing a propylene-based polymer according to claim 1, wherein propylene alone or other monomer having propylene and an olefinic double bond is substituted with a transition metal-containing crosslinking group. ₁ -Polymerization in the presence of a single site catalyst which is a symmetric answer-metallocene compound to obtain a propylene polymer main chain having a stereoblock structure containing an isotactic block,
  The propylene polymer main chain is obtained by graft copolymerizing a polymerizable monomer containing a carboxylic acid group, an acid anhydride group, or a carboxylic acid ester group into a propylene polymer. Manufacturing method of coalescence.   In the propylene polymer, the graft amount of at least one graft copolymer unit selected from the polymerizable monomer containing the carboxylic acid group or acid anhydride group or carboxylic acid ester group is 0.01 to 25. 21. The method for producing a propylene-based polymer according to claim 20, wherein the content is% by weight.   C having a transition group containing the above transition metal ₁ The symmetrical ansa-metallocene compound is a bridged Group 4 transition metal compound C having a conjugated 5-membered ring ligand ₁ The method for producing a propylene polymer according to claim 20 or 21, which is a metallocene having symmetry. A propylene polymer main chain having a stereoblock structure containing an isotactic block, a side chain containing a carboxylic acid group or an acid anhydride group or a carboxylic acid ester group, and the following (a) or (a) and A propylene polymer having the characteristics of (b),
Propylene alone or another monomer having propylene and an olefinic double bond, C having a transition metal-containing bridging group ₁ -Polymerization in the presence of a single site catalyst which is a symmetric answer-metallocene compound to obtain a propylene polymer main chain having a stereoblock structure containing an isotactic block,
  Propylene polymer produced by graft copolymerization of a polymerizable monomer containing a carboxylic acid group, an acid anhydride group or a carboxylic acid ester group to the obtained propylene polymer main chain .
  (A) when dissolved in toluene at 25 ° C. at a concentration of 10 wt%, the insoluble content is 1 wt% or less based on the total polymer,
  (B) Adhesion according to an adhesion test to a polypropylene substrate (cross-cut tape method) is 50/100 or more.