Green strength of elastomers

Details Green strength of elastomers Green strength of elastomers

1976-10-22

1978-06-13

Wong, Jr., Harry

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260836, 526 13, 526 16, 526 30, 526 49, 526 56, 526273, C08F 800, C08F22400, C08L 700, C08L 6300

Patent

active

040948315

ABSTRACT:
The green strength of synthetic elastomers is improved by forming interpolymers from at least one type of various synthetic elastomer forming monomers with an epoxy containing monomer having the formula: ##STR1## where R.sub.1 contains from 0 to 8 carbon atoms and R.sub.2 contains from 1 to 4 carbon atoms. Typical elastomer forming monomers include at least one conjugated diene having from 4 to 10 carbon atoms, olefins having from 2 to 14 carbon atoms along with a diene having from 4 to 6 carbon atoms, and combinations thereof. The interpolymer preferably is blended with synthetic elastomers or natural rubber (cis-1,4-polyisoprene) and utilized for various industrial uses such as tire carcasses including radial truck tire carcasses. The green strength is further improved if a small amount of an epoxy cross-linking agent is utilized. Examples of suitable cross-linking agents include monoamines and polyamines, monoanhydrides and polyanhydrides, and monocarboxylic acids, as well as polycarboxylic acids. Desirably, the interpolymer of the synthetic elastomer forming monomer and the epoxy containing monomer is blended with various types of synthetic elastomers or natural rubber in the presence of an epoxy cross-linking agent in a suitable mixing vessel such as a Banbury.

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patent: 3652476 (1972-03-01), Fellers et al.
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patent: 3947523 (1976-03-01), Schaffling

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