-
公开(公告)号：EP4403603A1
公开(公告)日：2024-07-24
申请号：EP22867416.4
申请日：2022-09-08
摘要： A crosslinked rubber composition which is a crosslinked product of a rubber composition including 100 parts by mass of a rubber component (A) including 10% by mass or more and 100% by mass or less of a hydrogenated conjugated diene-based polymer and having an iodine value of 10 or more and 370 or less, and 10 parts by mass or more and 120 parts by mass or less of carbon black (B), in which the hydrogenated conjugated diene-based polymer has a degree of hydrogenation of 10% or more and 99% or less, an aromatic vinyl monomer block content of less than 5% by mass and a weight average molecular weight of 150000 or more and 1500000 or less, and a change in shore A hardness after heating under air at 100°C for 72 hours compared with that before the heating satisfies the following expression (1): -10
-
公开(公告)号：EP3581597A1
公开(公告)日：2019-12-18
申请号：EP18751974.9
申请日：2018-02-07
IPC分类号： C08F236/04 , B60C1/00 , C08C19/25 , C08L15/00
摘要： A conjugated diene polymer satisfying following conditions (1) to (4):
(1) the conjugated diene polymer has two or more peaks in a molecular weight distribution curve obtained by measurement with gel permeation chromatography (GPC);
(2) the molecular weight distribution curve contains a peak (A) having a peak molecular weight of 500,000 to 2,500,000 and a peak (B) having a peak molecular weight of 150,000 to 600,000;
(3) a total value of an area of the peak (A) and an area of the peak (B) is 70% or more of a total area of the molecular weight distribution curve; and
(4) an absolute value of difference between a glass transition temperature of a conjugated diene polymer in the peak (A) (Tg (A)) and a glass transition temperature of a conjugated diene polymer in the peak (B) (Tg (B)) is 2°C to 30°C.-
公开(公告)号：EP3950814A1
公开(公告)日：2022-02-09
申请号：EP21190016.2
申请日：2021-08-06
摘要： An object of the present invention is to provide a conjugated diene polymer composition which can be prepared into a rubber compound product (such as a tire tread) ensuring a good balance between fuel efficiency and wet grip performance, and having high breaking properties, a small change in breaking strength after heating, and a small change in breaking properties for a prolonged vulcanization time, when vulcanized; and the conjugated diene polymer composition having a high compounding freedom which enables adjustment of the glass transition temperature.
The conjugated diene polymer composition comprises conjugated diene polymers (A) and (B) each having a specific amount of aromatic vinyl monomer units and a specific iodine value, wherein (SP value of (A) - SP value of (B)) is 0 MPa 1/2 or more and 0.8 MPa 1/2 or less, |iodine value of (A) - iodine value of (B)| is 100 I g/100 g or less, and |glass transition temperature of (A) - glass transition temperature of (B)| is 10°C or more and 60°C or less.-
4.发明公开
公开(公告)号：EP3988327A1
公开(公告)日：2022-04-27
申请号：EP21202815.3
申请日：2021-10-15
摘要： An object of the present invention is to provide a crosslinking rubber composition with which a crosslinking time is less liable to be increased, and with which a crosslinked product excellent in a tensile modulus, tear strength and abrasion resistance can be obtained. The crosslinking rubber composition contains: 100 parts by mass of a rubber polymer (A) having an iodine value of 10 to 250 (g/100 g) and comprising 3% by mass or more of an ethylene structure and less than 10% by mass of a vinyl aromatic monomer block; 0.1 to 5.0 parts by mass of sulfur (B); 0.1 to 5.0 parts by mass of a radical generator (C); and 0.1 to 5.0 parts by mass of a vulcanization accelerator (D).
-
公开(公告)号：EP4197936A1
公开(公告)日：2023-06-21
申请号：EP21855944.1
申请日：2021-08-06
摘要： A packaged molded article containing
a molded article of a rubber-like polymer having a weight average molecular weight of 100,000 or more, and
a packaging film packaging the molded article,
wherein
a portion facing the molded article, of the packaging film, satisfies the following conditions (1) and (2):
the portion has 50 or more openings;
a total area ratio of the openings is 0.1% or more and 15% or less with respect to a total area of the portion facing the molded article.-
6.发明公开
公开(公告)号：EP3950722A8
公开(公告)日：2022-04-27
申请号：EP21189026.4
申请日：2021-08-02
摘要： To provide a polymer blend which can allow for production of a tire tread excellent in wear resistance, and brake performance and long-term characteristics thereof, and a method for producing the polymer blend, as well as a rubber composition and a pneumatic tire each using the polymer blend.
A polymer blend containing a first polymer and a second polymer, wherein the first polymer is a random copolymer having an aromatic vinyl compound-derived constituent unit, a conjugated diene compound-derived constituent unit, and an ethylene-derived constituent unit, the second polymer is a non-hydrogenated random copolymer having an aromatic vinyl compound-derived constituent unit and a conjugated diene compound-derived constituent unit, and a value obtained by subtracting an SP value of the second polymer from an SP value of the first polymer is 0 or more and 0.6 or less.-
公开(公告)号：EP3517552A1
公开(公告)日：2019-07-31
申请号：EP17852804.8
申请日：2017-09-01
摘要： A modified conjugated diene polymer satisfying the following conditions (I) to (IV):
(I) at least two peaks are observed in a molecular weight distribution curve obtained from measurement by gel permeation chromatography (GPC);
(II) when a peak of the highest molecular weight is defined as a peak (B), a peak of the largest peak area except for the peak (B) is defined as a peak (T) in the molecular weight distribution curve, a peak molecular weight of the peak (B) is from 500,000 to 2,500,000 and a peak molecular weight of the peak (T) is from 150,000 to 600, 000;
(III) an area of the peak (T) is from 30% to 80% and a total value of an area of the peak (B) and the area of the peak (T) is 65% or more when the total area of the molecular weight distribution curve is defined as 100%; and
(IV) a proportion of a modified polymer chain(s) in a region ranging from a low-molecular-weight side to a point of 5% cumulative area is from 60% to 99% in the molecular weight distribution curve.-
8.发明公开
公开(公告)号：EP4286178A1
公开(公告)日：2023-12-06
申请号：EP21923157.8
申请日：2021-12-08
发明人： MATSUOKA, Daigo , YASUMOTO, Atsushi
摘要： A rubber-like polymer,
wherein a sum of a content Cl of a structure represented by the following formula (1) and a content C2 of a structure represented by the following formula (2) is 40 mol% or more and 60 mol% or less;
a content C3 of a structure represented by the following formula (3) is 15 mol% or more and 60 mol% or less;
a content C4 of a structure represented by the following formula (4) is 2 mol% or more and 25 mol% or less;
a content S of an aromatic vinyl monomer unit is 4 mol% or more and 18 mol% or less;
a weight average molecular weight measured by gel permeation chromatography (GPC) is 300,000 or more; and
a modification ratio measured by column adsorption GPC is 60% by mass or more:-
公开(公告)号：EP4261234A1
公开(公告)日：2023-10-18
申请号：EP21903043.4
申请日：2021-10-26
摘要： The present invention provides a hydrogenated diene polymer, having a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 1.5 or more, satisfying the following expression (S) assuming that component ratios (mol%) of a structural unit represented by the following formula (1), a structural unit represented by the following formula (2), a structural unit represented by the following formula (3), and a structural unit represented by the following formula (4) are respectively a, b, c, and d, and having a hydrogenation rate of 40 to 85%: 10 ≤ a + b / a + b + c + d × 100 ≤ 70
-
公开(公告)号：EP4219191A1
公开(公告)日：2023-08-02
申请号：EP21872634.7
申请日：2021-09-28
发明人： ISHIZAKA, Takanobu , ARAKI, Yoshifumi , SEKIKAWA, Shinichi , SUMITANI, Shogo , YAMASAKI, Hideki , YASUMOTO, Atsushi
IPC分类号： B60C1/00 , C08F8/04 , C08F297/00 , C08F297/04 , C08L53/02 , C08K3/36
摘要： The present invention provides a molded bale of a rubber-like block copolymer, satisfying the following requirements 1 to 6: Requirement 1: a content of a vinyl aromatic monomer unit is 9% by mass or more and 50% by mass or less; Requirement 2: a proportion of a vinyl aromatic monomer block is 3% by mass or more and less than 30% by mass; Requirement 3: an iodine value is 3 to 250; Requirement 4: a proportion of an ethylene structure is 3% by mass or more; Requirement 5: a weight average molecular weight is in a range of 80,000 to 1,000,000; and Requirement 6: at least one block at a molecular end is a specific block I or block II.
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.042 秒)
