Abstract: The current invention relates to the use of tetrabenzylthiuram disulfide/urea curative package for thermosetting rubber elastomers in an environmentally sound method of eliminating undesirable nitrosamines. The unique curative package synergistically increases the cure rate and physical properties of the elastomeric compound while reducing the amount of accelerator needed for vulcanization.

Abstract: Foamed elastomeric compositions are produced by a process comprising the steps of (A) forming a blend comprised of (1) a foamable, curable elastomer; (2) a curative; and (3) a blowing agent composition consisting essentially of (i) azodicarbonamide and (ii) at least one member selected from the group consisting of zinc salt of C.sub.1 -C.sub.6 organic acids and C.sub.1 -C.sub.6 carboxamides; and (B) heating such blend to between about 130.degree. C. and about 170.degree. C. for a period of time sufficient to foam and cure such blend.

Abstract: A blowing agent composition, comprising: (i) azodicarbonamide; (ii) zinc oxide and/or zinc carbonate; and (iii) at least one member selected from the group consisting of zinc salts of C.sub.1 -C.sub.6 organic acids, and C.sub.1 -C.sub.6 organic carboxamides characterized by a high gas evolution rate. The blowing agent composition may be used in effective amounts in formulations containing a foamable polymer to yield an efficiently gas expanded polymeric composition upon exposure to heat. Suitable C.sub.1 -C.sub.6 organic acids for said zinc salts include straight-chain carboxylic acids, and useful organic carboxamides include formamide.

Abstract: A blowing agent composition, comprising: (i) azodicarbonamide; (ii) zinc oxide and/or zinc carbonate; and (iii) at least one member selected from the group consisting of zinc salts of C.sub.1 -C.sub.6 organic acids, and C.sub.1 -C.sub.6 organic carboxamides characterized by a high gas evolution rate. The blowing agent composition may be used in effective amounts in formulations containing a foamable polymer to yield an efficiently gas expanded polymeric composition upon exposure to heat. Suitable C.sub.1 -C.sub.6 organic acids for said zinc salts include straight-chain carboxylic acids, and useful organic carboxamides include formamide.

Abstract: The present invention relates to an improved nitro urea compound specifically the zinc salt of nitro urea useful as a blowing agent composition, its preparation and its use.

Abstract: The present invention relates to an improved nitro urea compound specifically the zinc salt of nitro urea useful as a blowing agent composition, its preparation and its use.

Abstract: The present invention relates to an improved nitro urea compound specifically the zinc salt of nitro urea useful as a blowing agent composition, its preparation and its use.

Abstract: A blowing agent composition is provided comprising an azodicarbonamid; zinc oxide, zinc carbonate or a zinc salt of C.sub.1 -C.sub.4 organic acid; and an aromatic sulfinic acid or a metal salt of an aromatic sulfinic acid. For each hundred parts by weight of the azodicarbonamid, the zinc oxide, zinc carbonate or zinc salt is 0.25-25 parts by weight and the aromatic sulfinic acid or metal salt is from 1-2000 parts by weight for each 100 parts of the zinc oxide, zinc carbonate or zinc salt. The total weight of the zinc oxide, zinc carbonate or zinc salt plus the aromatic sulfinic acid or metal salt is from 20-25 parts by weight.

Abstract: A blowing agent composition is provided comprising an azodicarbonamid; zinc oxide, zinc carbonate or a zinc salt of C.sub.1 -C.sub.4 organic acid; and an aromatic sulfinic acid or a metal salt of an aromatic sulfinic acid. For each hundred parts by weight of the azodicarbonamid, the zinc oxide, zinc carbonate or zinc salt is 0.24-25 parts by weight and the aromatic sulfinic acid or metal salt is from 1-2000 parts by weight for each 100 parts of the zinc oxide, zinc carbonate or zinc salt. The total weight of the zinc oxide, zinc carbonate or zinc salt plus the aromatic sulfinic acid or metal salt is from 20-25 parts by weight.

Abstract: A blowing agent composition is provided comprising an azodicarbonamid; zinc oxide, zinc carbonate or a zinc salt of C.sub.1 -C.sub.4 organic acid; and an aromatic sulfinic acid or a metal salt of an aromatic sulfinic acid. For each hundred parts by weight of the azodicarbonamid, the zinc oxide, zinc carbonate or zinc salt is 0.25-25 parts by weight and the aromatic sulfinic acid or metal salt is from 1-2000 parts by weight for each 100 parts of the zinc oxide, zinc carbonate or zinc salt. The total weight of the zinc oxide, zinc carbonate or zinc salt plus the aromatic sulfinic acid or metal salt is from 20-25 parts by weight.