US 12,448,511 B2
Unsaturated polyester resin composition, molding material, molded article, and battery pack housing for electric vehicles
Ikuo Akai, Shizuoka (JP); Masahiro Hakotani, Shizuoka (JP); and Takashi Tsukamoto, Shizuoka (JP)
Assigned to JAPAN COMPOSITE CO., LTD., Tokyo (JP)
Appl. No. 17/284,703
Filed by JAPAN COMPOSITE CO., LTD., Tokyo (JP)
PCT Filed Oct. 16, 2019, PCT No. PCT/JP2019/040700
§ 371(c)(1), (2) Date Apr. 12, 2021,
PCT Pub. No. WO2020/080412, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018-197603 (JP), filed on Oct. 19, 2018.
Prior Publication US 2021/0380801 A1, Dec. 9, 2021
Int. Cl. C08L 67/03 (2006.01); C08G 63/181 (2006.01); C08J 5/24 (2006.01); C08K 3/22 (2006.01); C08K 3/32 (2006.01); H01M 50/121 (2021.01); H01M 50/222 (2021.01); H01M 50/224 (2021.01); H01M 50/227 (2021.01); H01M 50/229 (2021.01); H01M 50/231 (2021.01); H01M 50/24 (2021.01); H01M 50/271 (2021.01); C08L 31/04 (2006.01)
CPC C08L 67/03 (2013.01) [C08G 63/181 (2013.01); C08J 5/244 (2021.05); C08J 5/249 (2021.05); C08K 3/22 (2013.01); C08K 3/32 (2013.01); H01M 50/121 (2021.01); H01M 50/222 (2021.01); H01M 50/224 (2021.01); H01M 50/227 (2021.01); H01M 50/229 (2021.01); H01M 50/231 (2021.01); H01M 50/24 (2021.01); H01M 50/271 (2021.01); C08K 2003/2227 (2013.01); C08K 2003/323 (2013.01); C08L 31/04 (2013.01); C08L 2201/02 (2013.01); H01M 2220/20 (2013.01)] 14 Claims
 
1. An unsaturated polyester resin composition comprising:
a resin component comprising an unsaturated polyester, a polymerizable monomer, and a low profile agent; aluminum hydroxide; and a fire retardant,
wherein the unsaturated polyester is a polymerized product of polybasic acid and an alkane diol,
the polybasic acid contains an ethylenic unsaturated double bond-containing polybasic acid in an amount of 80 mol % or more relative to 100 mol % of the polybasic acid,
the low profile agent contains polyvinyl acetate and a saturated polyester,
the saturated polyester is a polymerized product of both isophthalic acid and adipic acid and a neopentyl glycol,
the fire retardant includes at least one selected from the group consisting of a halogen fire retardant and a non-halogen fire retardant,
the non-halogen fire retardant includes at least one selected from the group consisting of a phosphorus fire retardant, an inorganic fire retardant, and a nitrogen compound fire retardant,
the phosphorus fire retardant includes at least one selected from the group consisting of red phosphorus, phosphoric acid ester, poly phosphoric acid salt, an IFR expandable fire retardant, and phosphinic acid metal salt,
an amount of the unsaturated polyester is 20 mass % or more and 60 mass % or less relative to the resin component,
an amount of the polymerizable monomer is 20 mass % or more and 50 mass % or less relative to the resin component,
an amount of the polyvinyl acetate is 3 parts by mass or more and 10 parts by mass or less relative to 100 parts by mass of the resin component,
an amount of the saturated polyester is 8 parts by mass or more and 15 parts by mass or less relative to 100 parts by mass of the resin component, and
an amount of the aluminum hydroxide is 60 parts by mass or more and 130 parts by mass or less relative to 100 parts by mass of the resin component.