| 摘要 |
Thermally activated, free-radical initiator-containing polymer compositio ns comprise a (i) free radical initiator, (ii) free radical crosslinkable po lymer, (iii) scorch inhibiting amount and/or a cure-boosting amount of at le ast one of isocyanate, diisocyanate, e.g., MDI, or hydroxyalkyl (meth)acryla te compound, e.g., hydroxyethyl (meth)acrylate, and, optionally, (iv) other scorch retardants and/or cure boosters, e.g., a TEMPO compound, a hindered p henol, alpha-methyl styrene dimer, etc.. The free radical initiator can be a ny thermally activated compound that is relatively unstable and easily break s into at least two radicals, e.g., a peroxide or azo initiator. The crossli nkable polymer is a thermoplastic and/or elastomeric polymer that can be cro sslinked (cured) through the action of a crosslinking agent, e.g., LDPE. The isocyanate, diisocyanate and (meth)acrylate scorch inhibitors and/or cure b oosters can be used alone, or in combination with one another, or, optionall y, in combination with a TEMPO compound, e.g., 4-hydroxy-TEMPO.
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