Chloroprene copolymer latex and production method therefor
AssigneeResonac Corporation
InventorsShu Kaneko, Masahiro Ogawa, Akira Shibuya
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Abstract
One embodiment of the present invention relates to a chloroprene copolymer latex, a method for producing a chloroprene copolymer latex, a chloroprene copolymer latex composition, and a molded article or dipped product of a chloroprene copolymer rubber. The chloroprene copolymer latex is a latex of a chloroprene copolymer including monomer units derived from 2-chloro-1,3-butadiene (chloroprene) and monomer units derived from 2-methyl-1,3-butadiene, wherein the tetrahydrofuran insoluble content in the chloroprene copolymer is 20% by mass or less, and the proportion of the monomer units derived from 2-methyl-1,3-butadiene is 10 to 27 mol % in the chloroprene copolymer.
Claims9
A latex of a chloroprene copolymer consisting of monomer units derived from 2-chloro-1,3-butadiene (chloroprene) and monomer units derived from 2-methyl-1,3-butadiene, wherein
- a tetrahydrofuran insoluble content in the chloroprene copolymer is 20% by mass or less,
- a weight average molecular weight of a tetrahydrofuran soluble component at 25° ° C. of the chloroprene copolymer is 550,000 or more, and
- a proportion of the monomer units derived from 2-methyl-1,3-butadiene in the chloroprene copolymer is 10 to 27 mol %.
A chloroprene copolymer latex composition comprising:
- 100 parts by mass of solid content of a chloroprene copolymer latex;
- 0.1 to 20.0 parts by mass of a metal oxide (B);
- 0.1 to 10.0 parts by mass of a vulcanization accelerator (C);
- 0.1 to 10.0 parts by mass of sulfur (D);
- and
- 0.1 to 10.0 parts by mass of an antioxidant (E),
- wherein a chloroprene copolymer included in the chloroprene copolymer latex consists of monomer units derived from 2-chloro-1,3-butadiene (chloroprene) and monomer units derived from 2-methyl-1,3-butadiene,
- a tetrahydrofuran insoluble content in the chloroprene copolymer is 20% by mass or less, and
- a proportion of the monomer units derived from 2-methyl-1,3-butadiene in the chloroprene copolymer is 10 to 27 mol %.
Dependencies are inferred from the claim text.