Secondary cross-linked semi-interpenetrating polymer networks an

Details Secondary cross-linked semi-interpenetrating polymer networks an Secondary cross-linked semi-interpenetrating polymer networks an

1987-12-18

1990-11-13

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525101, 525105, 525106, 525342, 525431, 525453, 525455, C08L 8305, C08L 900

Patent

active

049702637

ABSTRACT:
Silicone semi-interpenetrating polymer networks are formed in thermoplastic polymer matrices by the vulcanization of a hydride group-containing silicon with a polymer containing unsaturated groups. The semi-IPN is then cross-linked by hydrolysis of SiOR groups on the polymer network, so that the OR groups are hydrolyzed to allow condensation of silanol groups to form SiOSi cross-links between the chains of the polymer network. Preferably, the polymer containing unsaturated groups in an alkoxysilyl-modified poly 1,2-butadiene. The resulting cross-linked products have improved chemical resistance, increased compressive or tensile strength and excellent temperature resistance and electrical properties for use in applications such as paper-making felts and wire and cable insulation.

REFERENCES:
patent: 4500688 (1984-10-01), Arkles
patent: 4714739 (1987-12-01), Arkles

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