Claims
- 1. A fiber comprising a crystalline propylene polymer composition comprising:a) from about 10 to about 90 weight percent crystalline, isotactic propylene homopolymer having a molecular weight distribution of less than or equal to 3; b) from about 90 to about 10 weight percent crystalline propylone copolymer having a molecular weight distribution of less than or equal to 3, wherein the weight percent of the comnonomer based on the total weight of the polymer is in the range of from about 0.05 to about 15; and c) wherein the polymer composition is prepared with a catalyst system consisting essentially of one metallocene catalyst.
- 2. The fiber of claim 1 wherein the comonomer weight percent is in the range of from about 0.1 to about 10.0.
- 3. The fiber of claim 1 wherein the comonomer is selected from the group consisting of ethylene, 1-butene, 1-pentene, 1-hexene, and 1-octene.
- 4. The fiber of claim 1 wherein the weight percent of the crystalline propylene homopolymer is in the range of from about 20 to about 80.
- 5. The fiber of claim 1 wherein the hexane extractables level is less than 2.0 wt % as measured by 21 CFR 177.1520(d)(3)(ii).
- 6. The fiber of claim 1 wherein the metallocene catalyst system is represented by the formula: wherein M is a metal of Group 4, 5, or 6 of the Periodic Table preferably, zirconium, hafnium and titanium, most preferably zirconium; R1 and R2 are identical or different, preferably identical, and are one of a hydrogen atom, a C1-C10 alkyl group, preferably a C1-C3 alkyl group, a C1-C10 alkoxy group, preferably a C1-C3 alkoxy group, a C6-C10 aryl group, preferably a C6-C8 aryl group, a C6-C10 aryloxy group, preferably a C6-C8 aryloxy group, a C2-C10 alkenyl group, preferably a C2-C4 alkenyl group, a C7-C40 arylalkyl group, preferably a C7-C10 arylalkyl group, a C7-C40 alkylaryl group, preferably a C7-C12 alkylaryl group, a C8-C40 arylalkenyl group, preferably a C8-C12 arylalkenyl group, or a halogen atom, preferably chlorine; R3 and R4 are hydrogen atoms; R5 and R6 are identical or different, preferably identical, are one of a halogen atom, preferably a fluorine, chlorine or bromine atom, a C1-C10 alkyl group, preferably a C1-C4 alkyl group, which may be halogenated, a C6-C10 aryl group, which may be halogenated, preferably a C6-C8 aryl group, a C2-C10 alkenyl group, preferably a C2-C4 alkenyl group, a C7-C40-arylalkyl group, preferably a C7-C10 arylalkyl group, a C7-C40 alkylaryl group, preferably a C7-C12 alkylaryl group, a C8-C40 arylalkenyl group, preferably a C8-C12 arylalkenyl group, a —NR215, —SR15, —OR15, —OSiR315 or —PR215 radical, wherein R15 is one of a halogen atom, preferably a chlorine atom, a C1-C10 alkyl group, preferably a C1-C3 alkyl group, or a C6-C10 aryl group, preferably a C6-C9 aryl group; —B(R11)—, —Al(R11)—, —Ge—, —Sn—, —O—, —S—, —SO—, —SO2—, —N(R11)—, —CO—, —P(R11)—, or —P(O)(R11)—; wherein:R11, R12 and R13 are identical or different and are a hydrogen atom, a halogen atom, a C1-C20 alkyl group, preferably a C1-C10 alkyl group, a C1-C20 fluoroalkyl group, preferably a C1-C10 fluoroalkyl group, a C6-C30 aryl group, preferably a C6-C20 aryl group, a C6-C30 fluoroaryl group, preferably a C6-C20 fluoroaryl group, a C1-C20 alkoxy group, preferably a C1-C10 alkoxy group, a C2-C20 alkenyl group, preferably a C2-C10 alkenyl group, a C7-C40 arylalkyl group, preferably a C7-C20 arylalkyl group, a C8-C40 alalkenyl group, preferably a C8-C22 arylalkenyl group, a C7-C40 alkylaryl group, preferably a C7-C20 alkylaryl group or R11 and R12, or R11 and R13, together with the atoms binding them, can form ring systems; M2 is silicon, germanium or tin, preferably silicon or germanium, most prefetably silicon; R8 and R9 are identical or different and have the meanings stated for R11; m and n are identical or different and are zeros 1 or 2, preferably zero or 1, m plus n being zero, 1 or 2, preferably zero or 1; and the radicals R10 are identical or different and have the meariigs stated for R11, R12 and R13. Two adjacent R10 radicals can be joined together to form a ring system, preferably a ring system containing from about 4-6 carbon atoms.
- 7. A fabric comprising a crystalline propylene polymer composition comprising:a) from about 10 to about 90 weight percent crystalline, isotatic propylene homopolymer haaving a molecular weight distribution of less than or equal to 3; b) from about 90 to about 10 weight percent crystalline propylene copolymer having a molecular weight distibution of less than about 3, wherein the weight percent of the comonomer based on the total weight of the polymer is in the range of from about 0.05 to about 15; and wherein the polymer composition is prepared with a catalyst system consisting essentially of one metallocene catalyst.
- 8. The fabric of claim 7 wherein the comonomer weight percent is in the range of from about 0.1 to about 10.0.
- 9. The fabric of claim 7 wherein the comonomer is selected from the group consisting of ethylene, 1-butene, 1-pentene, 1-hexene, and 1-octene.
- 10. The fabric of claim 7 wherein the weight percent of the crystalline propylene homopolymer is in the range of from about 20 to about 80.
- 11. The fabric of claim 7 wherein the hexane extractables level is less than 2.0 wt % as measured by 21 CFR 177.1520(d)(3)(ii).
- 12. The fabric of claim 7 wherein the metallocene catalyst system is represented by the formula: wherein M is a metal of Group 4, 5, or 6 of the Periodic Table preferably, zirconium, hafnium and titanium, most preferably zirconium; R1 and R2 are identical or different, preferably identical, and are one of a hydrogen atom, a C1-C10 alkyl group, preferably a C1-C3 alkyl group, a C1-C10 alkoxy group, preferably a C1-C3 alkoxy group, a C6-C10 aryl group, preferably a C6-C8 aryl group, a C6-C10 aryloxy group, preferably a C6-C8 aryloxy group, a C2-C10 alkenyl group, preferably a C2-C4 alkenyl group, a C7-C40 arylalkyl group, preferably a C7-C10 arylalkyl group, a C7-C40 alkylaryl group, preferably a C7-C12 alkylaryl group, a C8-C40 arylalkenyl group, preferably a C8-C12 arylalkenyl group, or a halogen atom, preferably chlorine; R3 and R4 are hydrogen atoms; R5 and R6 are identical or different, preferably identical, are one of a halogen atom, preferably a fluorine, chlorine or bromine atom, a C1-C10 alkyl group, preferably a C1-C4 alkyl group, which may be halogenated, a C6-C10 aryl group, which may be halogenated, preferably a C6-C8 aryl group, a C2-C10 alkenyl group, preferably a C2-C4 alkenyl group, a C7-C40-arylalkyl group, preferably a C7-C10 arylalkyl group, a C7-C40 alkylaryl group, preferably a C7-C12 alkylaryl group, a C8-C40 arylalkenyl group, preferably a C8-C12 arylalkenyl group, a —NR215, —SR15, —OR15, —OSiR315 or —PR215 radical, wherein R15 is one of a halogen atom, preferably a chlorine atom, a C1-C10 alkyl group, preferably a C1-C3 alkyl group, or a C6-C10 aryl group, preferably a C6-C9 aryl group; —B(R11)—, —Al(R11)—, —Ge—, —Sn—, —O—, —S—, —SO—, —SO2—, —N(R11)—, —CO—, —P(R11)—, or —P(O)(R11)—; wherein:R11, R12 and R13 are identical or different and are a hydrogen atom, a halogen atom, a C1-C20 alkyl group, preferably a C1-C10 alkyl group, a C1-C20 fluoroalkyl group, preferably a C1-C10 fluoroalkyl group, a C6-C30 aryl group, preferably a C6-C20 aryl group, a C6-C30 fluoroaryl group, preferably a C6-C20 fluoroaryl group, a C1-C20 alkoxy group, preferably a C1-C10 alkoxy group, a C2-C20 alkenyl group, preferably a C2-C10 alkenyl group, a C7-C40 arylalkyl group, preferably a C7-C20 arylalkyl group, a C8-C40 arylalkenyl group, preferably a C8-C22 arylalkenyl group, a C7-C40 alkylaryl group, preferably a C7-C20 alkylaryl group or R11 and R12, or R11 and R13, together with the atoms binding them, can form ring systems; M2 is silicon, germanium or tin, preferably silicon or germanium, most preferably silicon; R8 and R9 are identical or different and have the meanings stated for R11; m and n are identical or different and are zero, 1 or 2, preferably zero or 1, m plus n being zero, 1 or 2, preferably zero or 1; and the radicals R10 are identical or different and have the meanings stated for R11, R12 and R13. Two adjacent R10 radicals can be joined together to form a ring system, preferably a ring system containing from about 4-6 carbon atoms.
- 13. A fiber comprising a crystalline propylene polymer composition comprising:a) from about 10 to about 90 weight percent crystalline, isotactic propylene homopolymer having a molecular weight distribution of less than or equal to 3, and a weight average molecular weight from 25,000 to 1,500,000; b) from about 90 to about 10 weight percent crystalline propylene copolymer having a molecular weight distribution of less tan about 3, wherein the weight percent of the comonomer based on the total weight of the polymer is in the range of from about 0.05 to about 8; and c) wherein the polymer composition is prepared with a catalyst system consisting essentially of one metallocene catalyst.
- 14. The fiber of claim 13, wherein the comonomer weight percent is in the range of from about 0.1 to about 10.0.
- 15. The fiber of claim 13, wherein the comonomer is selected from the group consisting of ethylene, 1-butene, 1-pentene, 1-hexene, and 1-octene.
- 16. The fiber of claim 13, wherein the weight percent of the crystalline propylene homopolymer is in the range of from about 20 to about 80.
- 17. The fiber of claim 1, wherein the metallocene catalyst system comprises is represented by the formula: wherein M is selected from the group consisting of titanium, zirconium, hafnium, vanadium niobium, tantalum, chromium, molybdenum and tungsten;R1 and R2 are identical or different, are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C10 alkenyl group, a C2-C4 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, or a halogen atom; R3 and R4 are hydrogen atoms; R5 and R6 are identical or different, and are one of a halogen atom, a C1-C10 alkyl group which may be halogenated, a C6-C10 aryl group which may be halogenated, a C2-C10 alkenyl group, a C7-C40 -arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a -NR215, -SR15, -OR15, -OSiR315 or -PR215 radical, wherein R15 is one of a halogen atom, a C1-C10 alykl group, or a C6-C10 aryl group; -B(R11)-, -Al(R11)-, -Ge-, -Sn-, -O-, -S-, -SO-, -SO2-, -N(R11)-, -CO-, -P(R11)-, or -P(O)(R11)-;wherein, R11, R12 and R13 are identical or different and are a hydrogen atom, a halogen atom, a C1-C20 alkyl group, a 1-C20 fluoroalkyl group, a C6-C30 aryl group, a C6-C30 fluoroaryl group, a C1-C20 alkoxy group, a C2-C20 alkenyl group, a C7-C40 arylalkyl group, a C8-C40 arylalkenyl group, a C7-C40 alkylaryl group, or R11 and R12, or R11 and R13, together with the atoms binding them, form a ring system; M2 is silicon, germanium or tin; R8 and R9 are identical or different and have the meanings stated for R11; m and n are identical or different and are zero, 1 or 2, m plus n being zero, 1 or 2; and the radicals R10 are identical or different and have the meanings stated for R11, R12 and R13.
- 18. The fiber of claim 6, wherein the metallocene catalyst system comprises is represented by the formula: wherein M is selected from the group consisting of titanium, zirconium, hafnium, vanadium niobium, tantalum, chromium, molybdenum and tugnsten; R1 and R2 are identical or different, are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkyl group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C10 alkenyl group, a C2-C4 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, or a halogen atom; R3 and R4 are hydrogen atoms; R5 and R6 are identical or different, and are one of a halogen atom, a C1-C10 alkyl group which may be halogenated, a C6-C10 aryl group which may be halogenated, a C2-C10 alkenyl group, a C7-C40 -alkylaryl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a -NR215, -SR15, -OR15, -OSiR315 or -PR215 radical, wherein R15 is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group; -B(R11)-, -Al(11)-, -Ge-, -Sn-, -O-, -S-, -SO-, -SO2-, -N(11)-, -CO-, =P(R11)-, or -P(O)(R11)-;wherein, R11, R12 and R13 are identical or different and are a hydrogen atom, a halogen atom, a C1-C20 alkyl group, a C1-C20 fluoroalkyl group, a C6-C30 aryl group, a C6-C30 fluoroaryl group, a C1-C20 alkoxy group, a C2-C20 alkenyl group, a C7-C40 arylalkyl group, a C8-C40 arylalkenyl group, a C7-C40 alkylaryl group, or R11 and R12, or R11 and R13, together with the atoms binding them, can form ring systems; M2 is silicon, germanium or tin; silicon; R8 and R9 are identical or different and have the meanings stated for R11; m and n are identical or different and are zero, 1 or 2, m plus n being zero, 1 or 2; and the radicals R10 are identical or different and have the meanings stated for R11, R12 and R13.
APPLICATION FOR UNITED STATES PATENT
Based on Provisional Application No. 60/061,612, filed Oct. 10, 1997.
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Provisional Applications (1)
|
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|
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