Claims
- 1. A clarifying composition consisting essentially of a mixture of (a) from 5% to 90% by weight of the total weight of the clarifying composition of a phosphonite stabilizer composition, the main component of which is tetrakis-(2,4-di-tert-butylphenyl)-4,4-biphenylene diphosphite, and (b) from 95% to 10% by weight of the total weight of the clarifying composition of a sorbitol-based compound having a melting point greater than 200.degree. C., such that the amount of phosphonite stabilizer Composition is effective to depress the melting point of said sorbitol-based compound.
- 2. The clarifying composition of claim 1, wherein the sorbitol-based compound is selected from the group consisting of dibenzylidene sorbitol, bis(p-methylbenzylidene) sorbitol, bis(3,5-dimethylbenzylidene) sorbitol and bis(p-ethylbenzylidene) sorbitol.
- 3. The clarifying composition of claim 2, wherein the sorbitol-based compound is dibenzylidene sorbitol.
- 4. The clarifying composition of claim 2, wherein the sorbitol-based compound is bis(p-methylbenzylidene) sorbitol.
- 5. A polyolefin composition comprising (A) 100 parts of a propylene polymer material and (B) from 0.05 to 1 parts of a clarifying composition consisting essentially of a mixture of (a) from 5% to 90% by weight of the total weight of the clarifying composition of a phosphonite stabilizer composition, the main component of which is tetrakis-(2,4-di-tert-butylphenyl)-4,4-biphenylene diphosphite, and (b) from 95% to 10% by weight of the total weight of the clarifying composition of a sorbitol-based compound having a melting point greater than 200.degree. C., such that the amount of phosphonite stabilizer composition is effective to depress the melting point of said sorbitol-based compound.
- 6. The composition of claim 5, wherein the propylene polymer material of component (A) is a homopolymer of propylene, or a copolymer of propylene and ethylene or a C.sub.4-10 alpha-olefin.
- 7. The composition of claim 5, wherein the sorbitol-based compound is selected from the group consisting of dibenzylidene sorbitol, bis(p-methylbenzylidene) sorbitol, bis(3,5-dimethylbenzylidene) sorbitol and bis(p-ethylbenzylidene) sorbitol.
- 8. The composition of claim 7, wherein the sorbitol-based compound is dibenzylidene sorbitol.
- 9. The composition of claim 7, wherein the sorbitol-based compound is bis(p-methylbenzylidene) sorbitol.
Parent Case Info
This application is a continuation, of application Ser. No. 08/145,287, filed Oct. 29, 1983 now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2261667 |
May 1993 |
GBX |
Continuations (1)
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Number |
Date |
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Parent |
145287 |
Oct 1993 |
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