Propylene homopolymer for stress-resistant molded articles, and compositions comprising the polymer, as well as stress-resistant molded articles obtained from these

The present invention, automotive parts, housing-related parts, home appliance parts, propylene polymer or a propylene resin composition comprising a polymer used in the power tool component stress over time is used in applied state , as well as an object to provide a stress-resistant molded articles obtained from these. Propylene homopolymer (A) according to the present invention satisfies the following requirements (1) to (3), the propylene resin composition is characterized by containing a propylene homopolymer (A). (1) the ratio of the weight average molecular weight measured by GPC (Mw) to number average molecular weight (Mn) (Mw / Mn) is in the range of 1.2 to 3.5, (2) Mn is in the range of 35,000～400,000, (3) content of components soluble in o- dichlorobenzene at 90 ° C. is 4% by weight or less.