β-Crystalline polypropylenes

1. A formed article containing a composition, the composition comprising:

(A) a crystallizable propylene polymer, and

(B) about 0.001% to about 5%, relative to the weight of component (A), of at least one compound selected from the group consisting of aromatic amide derivatives of the formulae:

wherein

X 1 and X 2 are —OH;

M is a metal; and

R, R 1 , and R 2 are independently selected hydrocarbyl groups;

wherein the formed article is a molded product.

2. The article of claim 1 wherein R, R 1 , and R 2 are independently selected from the group consisting of: C 1 -C 20 alkyl; C 1 -C 20 alkyl substituted by C 1 -C 20 alkylamino, di(C 1 -C 20 alkyl)amino, C 1 -C 20 alkyloxy or hydroxy; {poly(C 2 -C 4 alkoxy)}-(C 2 -C 4 alkyl); C 2 -C 20 alkenyl; C 3 -C 12 cycloalkyl; C 3 -C 12 cycloalkyl substituted by 1, 2, or 3 C 1 -C 20 alkyl; cyclohexylmethyl; cyclohexylmethyl substituted by 1, 2, or 3 C 1 -C 20 alkyl; C 3 -C 20 cycloalkenyl; C 3 -C 12 cycloalkenyl substituted by 1, 2 or 3 C 1 -C 20 alkyl; phenyl; phenyl substituted by 1, 2, or 3 radicals selected from the group consisting of C 1 -C 20 alkyl, C 1 -C 20 alkyloxy, hydroxy, phenylamino, acylamino, phenylazo; phenyl substituted by halogens; C 7 -C 9 phenylalkyl; C 7 -C 9 phenylalkyl which is substituted on the phenyl by 1, 2, or 3 radicals selected from the group consisting of C 1 -C 20 alkyl, C 1 -C 20 alkoxy, and hydroxy; naphthyl; naphthyl substituted by C 1 -C 20 alkyl; adamantyl; adamantyl substituted by C 1 -C 20 alkyl; and a 5- or 6-membered heterocyclic group.

3. The article of claim 1 wherein R 1 and R 2 are the same and are selected from the group consisting of cyclohexyl and cyclopentyl.

4. The article of claim 1 further comprising about 0.001% to about 5%, relative to the weight of component (A), of at least one additional nucleating agent selected from the group consisting of:

(1) Aromatic sorbitol acetals;

(2) Nucleating agents based upon salts of phosphoric acid;

(3) Nucleating agents based upon salts of carboxylic acids;

(4) Nucleating agents based upon carboxy aluminum-hydroxide;

(5) Nucleating agents based upon salts of rosin/adiebetic acid;

(6) Zinc (II) monoglycerolate;

(7) Nucleating agents based upon diamide compounds; and

(8) Nucleating agents based upon trimesic acid derivatives.

5. A method for reducing haze in a molded product of crystallizable propylene polymers comprising:

adding to said polymer about 0.001% to about 5%, relative to the weight of the polymer, of at least one compound selected from the group consisting of aromatic amide derivatives of the formulae:

 wherein

X 1 and X 2 are —OH;

M is a metal; and

R, R 1 , and R 2 are independently selected hydrocarbyl groups; and

molding the crystallizable polyproplylene polymer to form a molded polymer.

6. The method of claim 5 wherein R, R 1 , and R 2 are independently selected from the group consisting of: C 1 -C 20 alkyl; C 1 -C 20 alkyl substituted by C 1 -C 20 alkylamino, di(C 1 -C 20 alkyl)amino, C 1 -C 20 alkyloxy or hydroxy; {poly(C 2 -C 4 alkoxy)}-(C 2 -C 4 alkyl); C 2 -C 20 alkenyl; C 3 -C 12 cycloalkyl; C 3 -C 12 cycloalkyl substituted by 1, 2, or 3 C 1 -C 20 alkyl; cyclohexylmethyl; cyclohexylmethyl substituted by 1, 2, or 3 C 1 -C 20 alkyl; C 3 -C 20 cycloalkenyl; C 3 -C 12 cycloalkenyl substituted by 1, 2 or 3 C 1 -C 20 alkyl; phenyl; phenyl substituted by 1, 2, or 3 radicals selected from the group consisting of C 1 -C 20 alkyl, C 1 -C 20 alkyloxy, hydroxy, phenylamino, acylamino, phenylazo; phenyl substituted by halogens; C 7 -C 9 phenylalkyl; C 7 -C 9 phenylalkyl which is substituted on the phenyl by 1, 2, or 3 radicals selected from the group consisting of C 1 -C 20 alkyl, C 1 -C 20 alkoxy, and hydroxy; naphthyl; naphthyl substituted by C 1 -C 20 alkyl; adamantyl; adamantyl substituted by C 1 -C 20 alkyl; and a 5- or 6-membered heterocyclic group.

7. The method of claim 5 wherein R 1 and R 2 are the same and are selected from the group consisting of cyclohexyl and cyclopentyl.