CN113638071A - Preparation method of polyolefin composite fiber - Google Patents

Preparation method of polyolefin composite fiber Download PDF

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Publication number
CN113638071A
CN113638071A CN202110955034.6A CN202110955034A CN113638071A CN 113638071 A CN113638071 A CN 113638071A CN 202110955034 A CN202110955034 A CN 202110955034A CN 113638071 A CN113638071 A CN 113638071A
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Prior art keywords
oligomer
composite fiber
modified polyester
polyolefin composite
polyolefin
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CN202110955034.6A
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Chinese (zh)
Inventor
张晓良
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Jiangsu Shangke Polymer New Mateirals Co ltd
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Jiangsu Shangke Polymer New Mateirals Co ltd
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Priority to CN202110955034.6A priority Critical patent/CN113638071A/en
Publication of CN113638071A publication Critical patent/CN113638071A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/183—Terephthalic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties

Abstract

The invention relates to a preparation method of polyolefin composite fiber, which is prepared by mixing modified polyester, polyolefin, antioxidant and surface phase solvent and then carrying out melt spinning through melt spinning equipment, wherein the preparation method of the modified polyester comprises the following steps: (a) adding ethylene glycol and dimethyl terephthalate into a rectifying tower, adding cobalt acetate tetrahydrate as an ester exchange catalyst, and carrying out ester exchange reaction at 130-150 ℃ to obtain a first oligomer; (b) raising the reaction temperature in the rectifying tower to 220-260 ℃ to continue carrying out ester exchange reaction until the ester exchange reaction rate is more than or equal to 98 percent to obtain a second oligomer; (c) adding terephthalic acid, ethylene glycol and alkyl diol into the second oligomer at 220-260 ℃ to perform esterification reaction until the esterification reaction rate is more than or equal to 97% to obtain a third oligomer; (d) and transferring the third oligomer into a reaction kettle for polycondensation. The polyolefin composite fiber thus obtained can be dyed with a disperse dye.

Description

Preparation method of polyolefin composite fiber
Technical Field
The invention belongs to the technical field of fiber manufacturing, relates to a polyolefin composite fiber, and particularly relates to a preparation method of the polyolefin composite fiber.
Background
Polyolefin fibers are synthetic fibers composed of linear macromolecules polymerized from olefins and having excellent properties of light weight, hydrophobicity, quick drying, etc., for example, polypropylene fibers having a density of 0.90g/cm3About, the chemical fiber is the lightest among the known chemical fibers, and is 30 percent lighter than terylene and 20 percent lighter than chinlon. However, since polyolefin does not have polar or other reactive functional groups, it cannot bind to dye moleculesAnd the dyeing is very difficult, so that the dyeing method cannot be widely applied to the field of clothes and garments.
At present, the dyeing of polypropylene fiber is mainly to adopt a color master batch method to color in the fiber spinning stage, namely, proper organic or inorganic dye is added in the melt spinning stage; this method is a relatively simple and inexpensive production method, but it renders polypropylene poorly spinnable and can only spin coarser fibres, limiting its application in clothing. Besides this coloring method, there are other coloring methods, such as composite spinning and carbon dioxide supercritical dyeing, but these methods have great limitations, which limit the application of polypropylene fiber in the field of clothing.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a preparation method of polyolefin composite fibers.
In order to solve the technical problems, the invention adopts a technical scheme that: a process for preparing composite polyolefine fibre includes such steps as mixing modified polyester, polyolefine, antioxidizing agent and surface phase solvent, melt spinning,
the preparation method of the modified polyester comprises the following steps:
(a) adding ethylene glycol and dimethyl terephthalate into a rectifying tower, adding cobalt acetate tetrahydrate as an ester exchange catalyst, and carrying out ester exchange reaction at 130-150 ℃ to obtain a first oligomer;
(b) raising the reaction temperature in the rectifying tower to 220-260 ℃ to continue carrying out ester exchange reaction until the ester exchange reaction rate is more than or equal to 98 percent to obtain a second oligomer;
(c) adding terephthalic acid, ethylene glycol and alkyl diol into the second oligomer at 220-260 ℃ to perform esterification reaction until the esterification reaction rate is more than or equal to 97% to obtain a third oligomer; the alkyl diol is at least one of neopentyl glycol, methyl propylene glycol, butanediol and methyl propylene glycol;
(d) and transferring the third oligomer into a reaction kettle for polycondensation, adding a catalyst and a surfactant, reducing pressure, heating to reach the required polymer viscosity, discharging, cooling and pelletizing to obtain the modified polyester.
Optimally, the mass ratio of the modified polyester to the polyolefin to the antioxidant to the surface phase solvent is 6: 89.9-90.8: 3-4: 0.1 to 0.2.
Optimally, the melting point of the modified polyester is less than or equal to 200 ℃, or the melting point is not existed, and the glass transition temperature is 40-75 ℃.
Further, the structural unit of the polyolefin is- (C)3H6)n-, n is an integer of 1000 to 11500; the melt index range of the polyolefin at the measurement temperature of 230 ℃ is 5-40 g/10 min.
Further, the surface phase solvent is a polypropylene modified polymer containing an anhydride group or an amino group, wherein the grafting ratio of the functional group is 0.5-3.0%.
Optimally, in the step (a), the molar ratio of the ethylene glycol to the dimethyl terephthalate is 1.8-2.2: 1, the content of the cobalt acetate tetrahydrate in the first oligomer is 400-600 ppm.
Optimally, in the step (c), the molar ratio of the terephthalic acid, the ethylene glycol and the alkyl glycol is 1: 0.8-0.9: 0.2 to 0.4.
Further, in the step (d), after the polycondensation reaction is carried out for 3-10 minutes, adding a catalyst, adding a surfactant after 3-10 minutes, and starting to reduce the pressure and raise the temperature 3-10 minutes after the addition is finished; the whole polycondensation reaction process is carried out for 2-4 hours to achieve the required polymer viscosity of 0.80-1.0 dL/g.
The invention has the following beneficial effects: according to the preparation method of the polyolefin composite fiber, the special modified polyester, the polyolefin, the antioxidant and the surface phase solvent are mixed and then melt-spun, so that the obtained polyolefin composite fiber can be dyed by disperse dyes (namely the polyolefin composite fiber can be dyed by the disperse dyes), the dye-uptake is 85-90%, the color fastness is 4-5 levels, and the moisture regain of the polyolefin composite fiber is 0.03-0.06%; the color tone and spinnability are good, and the color is vivid.
Detailed Description
The preparation method of the polyolefin composite fiber of the invention is to mix modified polyester, polyolefin, antioxidant and surface phase solvent and then carry out melt spinning by melt spinning equipment, and the preparation method of the modified polyester comprises the following steps: (a) adding ethylene glycol and dimethyl terephthalate into a rectifying tower, adding cobalt acetate tetrahydrate as an ester exchange catalyst, and carrying out ester exchange reaction at 130-150 ℃ to obtain a first oligomer; (b) raising the reaction temperature in the rectifying tower to 220-260 ℃ to continue carrying out ester exchange reaction until the ester exchange reaction rate is more than or equal to 98 percent to obtain a second oligomer; (c) adding terephthalic acid, ethylene glycol and alkyl diol into the second oligomer at 220-260 ℃ to perform esterification reaction until the esterification reaction rate is more than or equal to 97% to obtain a third oligomer; the alkyl diol is at least one of neopentyl glycol, methyl propylene glycol, butanediol and methyl propylene glycol; (d) and transferring the third oligomer into a reaction kettle for polycondensation, adding a catalyst and a surfactant, reducing pressure, heating to reach the required polymer viscosity, discharging, cooling and pelletizing to obtain the modified polyester.
It can be seen that the polyolefin composite fibers prepared by the above method have approximately the following contents: polyolefin compound (formula is- (C)3H6)n-) content range is 85-98 wt%, n range is 1000-11500, and melt index range is 5-40 g/10min (measurement temperature is 230 ℃). The modified polyester is represented by the general formula- (C)xHyOz)w-and- (C)10H8O4)mA polymer of composition (component- (C)xHyOz)w-and- (C)10H8O4)m-the w and m of the constituent polymer are in the range of 80 to 150 and the intrinsic viscosity is in the range of 0.45 to 0.80dL/g), wherein- (C)xHyOz)w-content ranging from 0.01 to 12 wt.% - (C)10H8O4)m-content range 1.9 to 14.9 wt%; component (C)xHyOz)w-and- (C)10H8O4)mThe dispersion diameter range of the polymer of the composition in the cross section of the polyolefin composite fiber is 300nm-1500 nm, and the melting point is less than or equal to 200 ℃ or no melting point, and the glass transition temperature is 40-73 ℃. The polymer chain of the polyolefin composite fiber also contains a structural unit corresponding to a surfactant, namely- (C)2H6SiO)t-(-(C2H6SiO)t-the polymer t is in the range of 10 to 150 and in the range of 0.01 to 0.06 wt%; when t is less than 10, the molecular weight of the polymer is too small, and the polymer is easy to extract in the decompression of the polymerization reaction; when t is more than 150, the molecular weight is too large, the polymer is not easy to disperse, and foreign matters are generated), and the content range is 0.01-0.06 wt%. N, m, w, t, x, y and z are positive integers, wherein x is more than or equal to 4 and less than or equal to 16; y is more than or equal to 8 and less than or equal to 20; z is more than or equal to 2 and less than or equal to 6. The prepared polyolefin composite fiber can be dyed by disperse dyes, the dye-uptake is 85-90%, and the color fastness is 4-5 grade; the moisture regain of the polyolefin composite fiber is 0.03-0.06%.
Polyolefin does not absorb water, and the oil agent is generally water-soluble, so that polyolefin fibers are poor in smoothness due to low oiling rate, and are prone to yarn breakage in the fiber manufacturing process. The modified polyester is dispersed in polyolefin polymerization, and the (C)2H6SiO)tThe smoothness of the polyolefin composite fibers does not change much when the effective content of polymer can be less than 0.005 wt%; above 0.015 wt%, the modified polyester and the polyolefin are seriously separated from each other directly, which is not favorable for fiber production.
Specifically, the mass ratio of the modified polyester to the polyolefin to the antioxidant to the surface phase solvent is 6: 89.9-90.8: 3-4: 0.1 to 0.2. The melting point of the modified polyester is less than or equal to 200 ℃, or the melting point is not existed and the glass transition temperature is 40-75 ℃. The polyolefin has a structural unit of- (C)3H6)n-, n is an integer of 1000 to 11500; the melt index range of the polyolefin at the measurement temperature of 230 ℃ is 5-40 g/10 min. The surface phase solvent is a polypropylene modified polymer containing an anhydride group or an amino group, wherein the grafting ratio of the functional group is 0.5-3.0%. In the step (a), the molar ratio of the ethylene glycol to the dimethyl terephthalate is 1.8-2.2: 1, the content of the cobalt acetate tetrahydrate in the first oligomer is 400-600 ppm. In step (c), the terephthalic acidThe molar ratio of ethylene glycol to alkyl glycol is 1: 0.8-0.9: 0.2 to 0.4. In the step (d), after the polycondensation reaction is carried out for 3-10 minutes, adding a catalyst, adding a surfactant after 3-10 minutes, and starting to reduce pressure and raise temperature 3-10 minutes after the addition is finished; the whole polycondensation reaction process is carried out for 2-4 hours to achieve the required polymer viscosity of 0.80-1.0 dL/g.
The following will describe in detail preferred embodiments of the present invention:
example 1
This example provides a method for preparing polyolefin composite fibers, which comprises the following steps:
(1) preparing modified polyester: adding ethylene glycol and dimethyl terephthalate (the molar ratio of the ethylene glycol to the dimethyl terephthalate is 2: 1) into a reaction tank of a rectifying tower, adding cobalt acetate tetrahydrate as an ester exchange catalyst, and carrying out an ester exchange reaction at 140 ℃ to obtain an oligomer (the dimethyl terephthalate, the molecular weight range is about 384-1920; namely a first oligomer) containing 500ppm of cobalt acetate tetrahydrate;
then raising the temperature in the reaction tank to 250 ℃, and continuously rectifying the generated methanol to continue to carry out ester exchange reaction; with the progress of transesterification, polyethylene terephthalate was obtained until the transesterification reaction rate was 98% (molecular weight increased, product was the second oligomer); terephthalic acid (TPA), Ethylene Glycol (EG), neopentyl glycol (NPG) and methyl propylene glycol (MPO) were mixed at 250 ℃ in a ratio of 1: 0.84: 0.2: 0.1 mol ratio of the mixture is added into the rectifying tower to continue the esterification reaction (the rectifying tower contains the polyethylene glycol terephthalate base material, the amount of the base material is 5.3wt percent of the total addition amount), until the esterification reaction rate reaches 97 percent (obtained by calculating the production amount of the byproduct water, and the product is a third oligomer);
the third oligomer thus obtained was transferred to a reaction vessel for polycondensation, and after 5 minutes, antimony trioxide (300 ppm in terms of antimony element (AO)) as a catalyst was added, and after 5 minutes, 0.08 wt% of a surfactant (HO- (C) was added2H6SiO)t-H, t is 100), starting to reduce pressure and raise temperature 5 minutes after the addition is finished, and the whole reaction process is carried out for 2-4 hours to reachAfter the required polymer viscosity is 0.70dL/g, the mixture is discharged, cooled and cut into granules to obtain the modified polyester, wherein the melting point (Tm) of the modified polyester is 190 ℃, and the glass transition temperature (Tg) of the modified polyester is 65 ℃.
(2) Mixing the modified polyester, the polypropylene chip (Taiwan plastic 1250F, the melt index is 25g/10min), the compatilizer maleic anhydride modified polypropylene (CMG9801) and the antioxidant mixture (the mass ratio of Irganox1010 to Irganox168 is 2: 3) and then carrying out melt spinning, wherein the mixing mass ratio of the modified polyester, the polypropylene chip (the melt index is 25g/10min), the compatilizer and the antioxidant is 6: 89.9: 4: 0.1, the spinning conditions were as follows: the spinneret orifice is 24 holes, the spinning temperature is 260 ℃, and the spinning speed is 2500m/min to prepare filaments. The fineness of the polyolefin composite fiber is 2D, the dispersion diameter of the modified polyester in the polyolefin composite fiber is 1000nm, the dye-uptake under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min is 87.2%, the color fastness is 5 grade, and the moisture regain of the polyolefin composite fiber is 0.03%.
Example 2
This example provides a process for preparing polyolefin composite fibers, which is substantially the same as in example 1, except that: in step (1), terephthalic acid (TPA), Ethylene Glycol (EG), Butanediol (BDO) and Methyl Propanediol (MPO) are added in a ratio of 1: 0.84: 0.2: 0.1, the modified polyester thus obtained had no melting point and a glass transition temperature of 63 ℃; in the step (2), the adding mass ratio of the modified polyester to the polypropylene chip to the compatilizer to the antioxidant is 6: 90.8: 3: 0.2; the dispersion diameter of the modified polyester fiber is 900 nm; the dye-uptake rate is 88.1% under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min, and the color fastness is grade 5.
Example 3
This example provides a process for preparing polyolefin composite fibers, which is substantially the same as in example 1, except that: in step (1), terephthalic acid (TPA), Ethylene Glycol (EG) and Butanediol (BDO) were added in a ratio of 1: 0.84: 0.35, the melting point of the modified polyester obtained in the way is 200 ℃, and the glass transition temperature is 60 ℃; in the step (2), the adding mass ratio of the modified polyester to the polypropylene chip to the compatilizer to the antioxidant is 6: 90.8: 3: 0.2; the dispersion diameter of the modified polyester fiber is 850 nm; the dye-uptake rate is 86.3% under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min, and the color fastness is grade 5.
Example 4
This example provides a process for preparing polyolefin composite fibers, which is substantially the same as in example 1, except that: in the step (1), terephthalic acid (TPA), Ethylene Glycol (EG) and methyl propylene glycol (MPO) are added in a ratio of 1: 0.84: 0.35, the modified polyester thus obtained had a melting point of 198 ℃ and a glass transition temperature of 61 ℃; in the step (2), the adding mass ratio of the modified polyester to the polypropylene chip to the compatilizer to the antioxidant is 6: 90.8: 3: 0.2; the dispersion diameter of the modified polyester fiber is 860 nm; the dye-uptake rate is 86.1% under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min, and the color fastness is grade 5.
Comparative example 1
This example provides a process for preparing a polyolefin composite fiber, which is substantially the same as that of example 1, except that: in step (a), terephthalic acid (TPA) and Ethylene Glycol (EG) are added in a molar ratio of 1: 1.14; the melting point of the polyester is 255 ℃, and the glass transition temperature is 75 ℃; the dye-uptake rate is 55.2% under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min, and the color fastness is grade 3.
Comparative example 2
This example provides a process for preparing a polyolefin composite fiber, which is substantially the same as in comparative example 1, except that: in the step (b), no antioxidant is added; the dye-uptake rate is 56.4% under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min, and the color fastness is grade 3.
Comparative example 3
This example provides a process for preparing a polyolefin composite fiber, which is substantially the same as in comparative example 1, except that: in the step (b), no compatilizer is added; the dye-uptake rate is 47.2% under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min, and the color fastness is grade 3.
Comparative example 4
This example provides a process for preparing a polyolefin composite fiber, which is substantially the same as that of example 1, except that: no modified polyester is added; the dye-uptake rate is 17.2% under the dyeing conditions of 1.5% o.w.f of disperse dye (Blue-AM-2G), 130 ℃ and 100min, and the color fastness is grade 3.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (8)

1. A preparation method of polyolefin composite fiber is characterized in that: it is prepared by mixing modified polyester, polyolefin, antioxidant and surface phase solvent, and then carrying out melt spinning by melt spinning equipment,
the preparation method of the modified polyester comprises the following steps:
(a) adding ethylene glycol and dimethyl terephthalate into a rectifying tower, adding cobalt acetate tetrahydrate as an ester exchange catalyst, and carrying out ester exchange reaction at 130-150 ℃ to obtain a first oligomer;
(b) raising the reaction temperature in the rectifying tower to 220-260 ℃ to continue carrying out ester exchange reaction until the ester exchange reaction rate is more than or equal to 98 percent to obtain a second oligomer;
(c) adding terephthalic acid, ethylene glycol and alkyl diol into the second oligomer at 220-260 ℃ to perform esterification reaction until the esterification reaction rate is more than or equal to 97% to obtain a third oligomer; the alkyl diol is at least one of neopentyl glycol, methyl propylene glycol, butanediol and methyl propylene glycol;
(d) and transferring the third oligomer into a reaction kettle for polycondensation, adding a catalyst and a surfactant, reducing pressure, heating to reach the required polymer viscosity, discharging, cooling and pelletizing to obtain the modified polyester.
2. The method for producing polyolefin composite fiber according to claim 1, characterized in that: the mass ratio of the modified polyester to the polyolefin to the antioxidant to the surface phase solvent is 6: 89.9-90.8: 3-4: 0.1 to 0.2.
3. The method for producing polyolefin composite fiber according to claim 1, characterized in that: the melting point of the modified polyester is less than or equal to 200 ℃, or the melting point is not existed and the glass transition temperature is 40-75 ℃.
4. The method for producing polyolefin composite fiber according to claim 1 or 2, characterized in that: the polyolefin has a structural unit of- (C)3H6)n-, n is an integer of 1000 to 11500; the melt index range of the polyolefin at the measurement temperature of 230 ℃ is 5-40 g/10 min.
5. The method for producing polyolefin composite fiber according to claim 1 or 2, characterized in that: the surface phase solvent is a polypropylene modified polymer containing an anhydride group or an amino group, wherein the grafting ratio of the functional group is 0.5-3.0%.
6. The method for producing polyolefin composite fiber according to claim 1, characterized in that: in the step (a), the molar ratio of the ethylene glycol to the dimethyl terephthalate is 1.8-2.2: 1, the content of the cobalt acetate tetrahydrate in the first oligomer is 400-600 ppm.
7. The method for producing polyolefin composite fiber according to claim 1, characterized in that: in step (c), the molar ratio of terephthalic acid, ethylene glycol and alkyl glycol is 1: 0.8-0.9: 0.2 to 0.4.
8. The method for producing polyolefin composite fiber according to claim 3, characterized in that: in the step (d), after the polycondensation reaction is carried out for 3-10 minutes, adding a catalyst, adding a surfactant after 3-10 minutes, and starting to reduce pressure and raise temperature 3-10 minutes after the addition is finished; the whole polycondensation reaction process is carried out for 2-4 hours to achieve the required polymer viscosity of 0.80-1.0 dL/g.
CN202110955034.6A 2021-08-19 2021-08-19 Preparation method of polyolefin composite fiber Pending CN113638071A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB953096A (en) * 1961-05-31 1964-03-25 Monsanto Chemicals Polyolefin compositions
US3431322A (en) * 1962-07-20 1969-03-04 Eastman Kodak Co Dyeable polyolefin compositions and products therefrom
JPH04209824A (en) * 1990-12-07 1992-07-31 Daiwabo Create Kk Dyeable polyolefinic fiber and its production
US20040204560A1 (en) * 2003-03-14 2004-10-14 Chen Shien Chang Modified polyester fiber and process for producing the same
JP2007308830A (en) * 2006-05-18 2007-11-29 Unitica Fibers Ltd Dyeable polypropylene fiber
JP2019127679A (en) * 2018-01-22 2019-08-01 東レ株式会社 Dyeable polyolefin core sheath type composite fiber and fiber structure made thereof
JP2019147927A (en) * 2018-02-28 2019-09-05 東レ株式会社 Copolyester resin composition, and dyeable polyolefin resin composition having the same, and fiber including dyeable polyolefin resin composition
US20210040297A1 (en) * 2019-08-08 2021-02-11 Guang Xin Polymer Composites Co., Ltd Polypropylene composition and dyeable polypropylene filament yarn including the same

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB953096A (en) * 1961-05-31 1964-03-25 Monsanto Chemicals Polyolefin compositions
US3431322A (en) * 1962-07-20 1969-03-04 Eastman Kodak Co Dyeable polyolefin compositions and products therefrom
JPH04209824A (en) * 1990-12-07 1992-07-31 Daiwabo Create Kk Dyeable polyolefinic fiber and its production
US20040204560A1 (en) * 2003-03-14 2004-10-14 Chen Shien Chang Modified polyester fiber and process for producing the same
JP2007308830A (en) * 2006-05-18 2007-11-29 Unitica Fibers Ltd Dyeable polypropylene fiber
JP2019127679A (en) * 2018-01-22 2019-08-01 東レ株式会社 Dyeable polyolefin core sheath type composite fiber and fiber structure made thereof
JP2019147927A (en) * 2018-02-28 2019-09-05 東レ株式会社 Copolyester resin composition, and dyeable polyolefin resin composition having the same, and fiber including dyeable polyolefin resin composition
US20210040297A1 (en) * 2019-08-08 2021-02-11 Guang Xin Polymer Composites Co., Ltd Polypropylene composition and dyeable polypropylene filament yarn including the same

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