Acrylic rubber, rubber composition, and rubber crosslinked product

By introducing a specific ratio of (meth)acrylamide monomers and crosslinking monomer units into acrylic rubber, the adhesion problem of acrylic rubber during roller mating was solved, and the processability and mechanical properties were improved.

CN116917359BActive Publication Date: 2026-06-09ZEON CORP
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Patent Information

Application Number
CN202280019325.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-03-23
Filing Date
2022-03-11
Publication Date
2026-06-09
Estimated Expiration
2042-03-11

AI Technical Summary

Technical Problem

Existing acrylic rubber is prone to sticking to the rollers when used with various compounding agents, resulting in insufficient processability and making processing difficult.

Method used

The monomer composition is optimized to improve processability by introducing 0.2–17.5% by weight of (meth)acrylamide monomer units into acrylic rubber and combining them with crosslinking monomer units containing carboxyl groups, halogen-containing monomer units, or epoxy-containing monomer units.

Benefits of technology

Excellent processability of acrylic rubber was achieved, and the elongation at break and tensile strength of the rubber crosslinked compound were improved, thus enhancing processability and mechanical properties.

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Abstract

The present invention provides an acrylic rubber containing (meth) acrylamide monomer units and crosslinkable group-containing monomer units selected from at least one of carboxyl group-containing monomer units, halogen atom-containing monomer units, and epoxy group-containing monomer units, the content of the (meth) acrylamide monomer units in all the monomer units being 0.2 to 17.5% by weight.
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Citation Information

Patent Citations

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    CN103910826A

  • Protection of new electro-conductors based on nano-sized metals using direct bonding with optically clear adhesives

    CN106661408A

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    CN107502246A

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    JP1999199825A