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US 6,660,182 B2Granted
Blends of stretchable liquid crystal polymers with thermoplastics
AssigneeTicona LLC
InventorRandy Douglas Jester
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Abstract
The present invention relates to a stretchable blend comprising a stretchable liquid crystal polymer and a thermoplastic. These stretchable blends can be stretched at the same temperature range as many conventional thermoplastics. During a post orientation process, such as fiber or film stretching, the stretchable liquid crystal polymer can stretch and deform along with the thermoplastic matrix maintaining adhesion between the liquid crystal polymer domains and the thermoplastic matrix thereby improving the physical properties of the oriented article.
Claims25
A liquid crystal polymer (LOP) blend comprising:
- (a) a stretchable LCP;
- and
- (b) a thermoplastic polymer capable of being oriented at processing temperatures of from about 120° C. to about 160° C.,
- wherein the stretchable LCP is a liquid crystal polymer that is capable of being stretched to at least 100% elongation before breaking or rupturing when spun into tapes and tested according to the Tape Stretching Procedure at a test temperature of 150° C.
1 more element
A liquid crystal polymer (LCP) blend comprising:
- (a) a liquid crystal polymer;
- and
- (b) a thermoplastic polymer selected from the group consisting of:
- polyethylene, polypropylene, polybutylene, polyamide, poly(ethylene terephthalate), ethylene vinyl acetate, ethylene vinyl alcohol, and cyclic olefin copolymer;
- wherein said liquid crystal polymer consists essentially of recurring units I, II, III, IV and V, wherein:
- recurring unit I is
- recurring unit II is:
- recurring unit III is:
- wherein Ar1 is selected from the group consisting of:
- and mixtures thereof;
- recurring unit IV is:
- —O—Ar2—X—
- wherein Ar2 is selected from the group consisting of:
- and mixtures thereof, and X is independently selected from the group consisting of O and NR2 wherein R2 is independently selected from the group consisting of hydrogen and a C1 to C6 alkyl;
- and
- recurring unit V is selected from the group consisting of:
- and mixtures thereof, wherein R1 is independently selected from the group consisting of hydrogen and C1 to C6 alkyl;
- wherein recurring unit I is present in the liquid crystal polymer in an amount of from about 15 to about 60 mole percent, recurring unit II is present in the liquid crystal polymer in an amount of from about 15 to about 60 mole percent, recurring unit III is present in the liquid crystal polymer in an amount of from about 5 to about 20 mole percent, recurring unit IV is present in the liquid crystal polymer in an amount of from about 5 to about 20 mole percent, and recurring unit V is present in the liquid crystal polymer in an amount of from about 7 to about 15 mole percent and wherein:
- (a) recurring units I and II combined are present in the liquid crystal polymer in an amount of from about 50 to about 75 mole percent and
- (b) the liquid crystal polymer contains at least about 5 mole percent of recurring units of the formula:
- with the proviso that recurring unit II is present in the liquid crystal polymer in an amount of at least about 30 mole percent, if and when the liquid crystal polymer also contains:
- in combination with a total from 0 to about 5 mole percent of units selected from the group consisting of units (Vb), (Ve) and (Vd) and mixtures thereof.
19 more elements
A liquid crystal polymer (LCP) blend comprising:
- (a) a liquid crystal polymer;
- and
- (b) a thermoplastic polymer selected from the group consisting of:
- polyethylene, polypropylene, polybutylene, polyamide, poly(ethylene terephthalate), ethylene vinyl acetate, ethylene vinyl alcohol, and cyclic olefin copolymer;
- wherein said liquid crystal polymer consists essentially of recurring units I, II, III, IV and V, wherein:
- recurring unit I is
- recurring unit II is:
- recurring unit III is:
- wherein is Ar1 is selected from the group consisting of:
- and mixtures thereof;
- recurring unit IV is:
- —O—Ar2—X—
- wherein Ar2 is selected from the group consisting of:
- and mixtures thereof, and X is independently selected from the group consisting of O and NR2 wherein R2 is independently selected from the group consisting of hydrogen and a C1 to C6 alkyl;
- and
- recurring unit V is a dioxy unit of the formula:
- in combination with at least one additional unit selected from the group consisting of:
- wherein R1 is independently selected from the group consisting of hydrogen and C1 to C6 alkyl,
- wherein recurring unit I is present in the liquid crystal polymer in an amount of from about 15 to about 60 mole percent, recurring unit II is present in the liquid crystal polymer in an amount of from about 15 to about 60 mole percent, recurring unit III is present in the liquid crystal polymer in an amount of from about 5 to about 20 mole percent, recurring unit IV is present in the liquid crystal polymer in an amount of from about 5 to about 20 mole percent, and recurring unit V is present in the liquid crystal polymer in an amount of from about 7 to about 15 mole percent and wherein:
- (a) recurring units I and II combined are present in the liquid crystal polymer in an amount of from about 50 to about 75 mole percent and
- (b) the liquid crystal polymer contains at least about 5 mole percent of recurring units of the formula:
- with the proviso that recurring unit II is present in the liquid crystal polymer in an amount of at least about 30 mole percent, if and when unit (Vc) is also present and the units (Va), (Vb), (Vd), and (Ve) combined, constitute up to about 5 mole percent of the liquid crystal polymer.
19 more elements
A liquid crystal polymer (LOP) blend comprising:
- (a) a liquid crystal polymer;
- and
- (b) a thermoplastic polymer selected from the group consisting of polyethylene, polypropylene, polybutylene, polyamide, poly(ethylene terephthalate), ethylene vinyl acetate, ethylene vinyl alcohol, and cyclic olefin copolymer,
- wherein said liquid crystal polymer consists essentially of recurring units I, II, III, IV and V, wherein:
- recurring unit I is
- recurring unit II is:
- recurring unit III is:
- wherein Ar1 is selected from the group consisting of:
- and mixtures thereof;
- recurring unit IV is:
- —O—Ar2—X—
- wherein Ar2 is selected from the group consisting of:
- and mixtures thereof;
- and X is independently O or NR2 wherein R2 is independently selected from the group consisting of hydrogen and a C1 to C6 alkyl;
- and
- recurring unit V is:
- wherein recurring unit I is present in the liquid crystal polymer in an amount of from about 15 to about 60 mole percent, recurring unit II is present in the liquid crystal polymer in an amount of from about 15 to about 60 mole percent, recurring unit III is present in the liquid crystal polymer in an amount of from about 5 to about 20 mole percent, recurring unit IV is present in the liquid crystal polymer in an amount of from about 5 to about 20 mole percent and recurring unit V is present in the liquid crystal polymer in an amount of from about 7 to about 15 mole percent;
- wherein:
- (a) recurring units I and II combined are present in the liquid crystal polymer in an amount of from about 50 to about 75 mole percent and
- (b) the liquid crystal polymer contains at least about 5 mole percent of recurring units of the formula:
- (c) at least a portion of recurring unit III is:
18 more elements
A melt blend comprising:
- (a) a stretchable liquid crystal polymer;
- and
- (b) a non-liquid crystal thermoplastic polymer capable of being oriented at processing temperatures of from about 120° C. to 160° C.,
- wherein said liquid crystal polymer is present in the blend in an amount of from about 5 to about 15% by weight, based on the total weight of the stretchable liquid crystal polymer and the non-liquid crystal thermoplastic polymer components thereof and wherein the stretchable liquid crystal polymer is a polymer that is capable of being stretched to at least 200% elongation before breaking or rupturing when spun into tapes and tested according to the Tape Stretching Procedure at a test temperature of 150° C.
1 more element
A shaped article formed from a melt blend comprising:
- (a) a stretchable liquid crystal polymer capable of being stretched to at least 100% elongation before breaking or rupturing when spun into tapes and tested according to the Tape Stretching Procedure at a test temperature of 150° C.;
- and
- (b) a non-liquid crystal thermoplastic polymer capable of being oriented at processing temperatures of from about 120° C. to about 160° C.,
- wherein said shaped article has been stretched to at least about 100% elongation at a temperature of from about 120° C. to about 160° C.
1 more element
Dependencies are inferred from the claim text.