A process additive for polyolefin films and foams produces products having reduced aging time and reduced greasiness and reduced grease-like transfer as compared to glycerol monostearate (GMS). Carbon dioxide based blowing agents are suitable. The process additive comprises a fatty acid N-aliphatic alcohol amide of the general formula R—CON(R′)R″. R is a fatty hydrocarbon radical having from about 8 to 30 carbons. R′ typically is hydrogen. R′ can also be an alkyl radical of from about 1 to 6 carbons or an alkyl alcohol radical of from about 1 to 6 carbons. R″ is an alkyl alcohol fragment of from about 1 to 6 carbons. The alkyl alcohol fragments can be monohydric or polyhydric. Secondary fatty monoalkanolamides in which R′ is hydrogen are particularly useful, especially stearamide monoethanolamine (MEA). The benefits of the invention can be achieved and enhanced in some examples by mixing the fatty acid N-aliphatic alcohol amide with an ester of a long chain fatty acid with a polyhydric alcohol, including GMS. Examples of fatty acid N-aliphatic alcohol amides include cocamide MEA, lauramide monoisopropylamine (MIPA), oleamide MIPA, and stearamide 2,3-propanediol.
与
单硬脂酸甘油酯(GMS)相比,一种用于聚烯烃薄膜和泡沫的加工添加剂可减少产品的老化时间,降低油腻感和油脂样转移。
二氧化碳基发泡剂也适用。加工添加剂包括通式为 R-CON(R′)R″的
脂肪酸 N-
脂肪醇酰胺。R 是脂肪烃基,具有约 8 至 30 个碳原子。R′ 通常是氢。R′ 也可以是约 1 至 6 个碳原子的烷基或约 1 至 6 个碳原子的烷基醇基。R″ 是约 1 至 6 个碳原子的烷基醇片段。烷基醇片段可以是一
水或多
水的。R′为氢的仲脂肪单烷醇酰胺特别有用,尤其是硬脂酰胺单
乙醇胺(
MEA)。在某些例子中,通过将
脂肪酸 N-
脂肪醇酰胺与长链
脂肪酸酯和多元醇(包括 GMS)混合,可以实现和提高本发明的优点。
脂肪酸 N-
脂肪醇酰胺的例子包括椰油酰胺
MEA、月桂酰胺
单异丙基胺(
MIPA)、油酰胺
MIPA 和硬脂酰胺 2,3-
丙二醇。