Chloroprene copolymer latex, method for producing same, vulcanized product, dip molded article and method for producing same
AssigneeDenka Company Limited
InventorsMasao Onozuka, Hidehito Otsuka
Life of this patent
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Abstract
A chloroprene copolymer latex containing a chloroprene copolymer having a structural unit derived from chloroprene and a structural unit derived from 2,3-dichloro-1,3-butadiene, in which a toluene insoluble content in the chloroprene copolymer is 50 to 95% by mass, and a modulus at 500% elongation of a film, which is obtained on a base material by dipping the base material in the chloroprene copolymer latex and then performing vulcanization at 100° C. for 30 minutes, according to JIS K 6251 is 4.0 MPa or less.
Claims16
A chloroprene copolymer latex comprising a chloroprene copolymer having a structural unit derived from chloroprene and a structural unit derived from 2,3-dichloro-1,3-butadiene, wherein
- the chloroprene copolymer provides a peak derived from abietic acid in gas chromatography of an extract extracted from the chloroprene copolymer using an ethanol/toluene azeotropic mixture,
- a toluene insoluble content in the chloroprene copolymer is 85 to 95% by mass, and
- a modulus at 500% elongation of a film, which is obtained on a base material by dipping the base material in the chloroprene copolymer latex and then performing vulcanization at 100° C. for 30 minutes, according to JIS K 6251 is 3.5 MPa or less.
A chloroprene copolymer latex comprising a chloroprene copolymer having a structural unit derived from chloroprene and a structural unit derived from 2,3-dichloro-1,3-butadiene, wherein
- a toluene insoluble content in the chloroprene copolymer is 50 to 95% by mass,
- a modulus at 500% elongation of a film, which is obtained on a base material by dipping the base material in the chloroprene copolymer latex and then performing vulcanization at 100° C. for 30 minutes, according to JIS K 6251 is 3.5 MPa or less, and
- a modulus at 100% elongation of the film according to JIS K 6251 is 0.5 to 1.2 MPa.
A chloroprene copolymer latex comprising a chloroprene copolymer having a structural unit derived from chloroprene and a structural unit derived from 2,3-dichloro-1,3-butadiene, wherein
- a toluene insoluble content in the chloroprene copolymer is 85 to 95% by mass, and
- a modulus at 500% elongation of a film, which is obtained on a base material by dipping the base material in the chloroprene copolymer latex and then performing vulcanization at 100° C. for 30 minutes, according to JIS K 6251 is 3.5 MPa or less.
Dependencies are inferred from the claim text.