KR101768323B1 - Adhesive polypropylene resin composition for complex fiber spinning and preparing method of the same - Google Patents
Adhesive polypropylene resin composition for complex fiber spinning and preparing method of the same Download PDFInfo
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- KR101768323B1 KR101768323B1 KR1020150130903A KR20150130903A KR101768323B1 KR 101768323 B1 KR101768323 B1 KR 101768323B1 KR 1020150130903 A KR1020150130903 A KR 1020150130903A KR 20150130903 A KR20150130903 A KR 20150130903A KR 101768323 B1 KR101768323 B1 KR 101768323B1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
Composite yarns with high flowability and excellent compatibility with interfacial materials when combined with core sheath type fibers such as polyethylene (PE) / polypropylene (PP) and polyethylene (PE) / PET (polyethylene terephthalate) Disclosed is an adhesive resin composition and an optimum production method for producing the same. The present invention relates to a high-density polyethylene comprising 60 to 85% by weight of high-density polyethylene; 0.01 to 5% by weight peroxide initiator; 0.1 to 10% by weight of maleic anhydride or a derivative thereof; 5 to 35% by weight of an olefin block copolymer; And 1 to 10% by weight of a polypropylene modified with maleic anhydride or a derivative thereof; and a process for producing the same.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive resin composition for composite spinning and a method for producing the same, and more particularly, to a composite spinning adhesive resin composition for increasing the interfacial adhesion of core- .
Conventionally, modified polyethylene which increases the adhesiveness in order to improve the interfacial adhesion during the composite spinning of core sheath type fibers such as polyethylene (PE) / polypropylene (PP), polyethylene (PE) / PET (polyethylene terephthalate) However, when it is applied to polyethylene (PE) / polypropylene (PP) using such a technique, there is a case where the compatibility between the two is deteriorated and the adhesive force is lowered somewhat.
Particularly, when a nonwoven fabric other than a long fiber is produced, the interfacial separation phenomenon occurs. Accordingly, when a nonwoven fabric is produced with pulp or the like, the physical properties of the final product deteriorate. Also, in the case of modified polyethylene, it is difficult to have a high flowability suitable for spinning, and the compatibility with polypropylene is poor.
Korean Laid-Open Publication No. 1990-0701873 discloses a method for producing fibers from a composition containing modified polyethylene, but does not mention the improvement in interfacial adhesion when applied to composite spinning such as PE / PP or PE / PET.
Korean Patent No. 0639552 discloses a resin composition for a composite spinning fiber, which is intended to solve the compatibility between the core sheaths by adding modified polyethylene, but does not mention the improvement of the interfacial adhesion when applied to the composite spinning.
The present invention relates to a method for producing a core-sheath type composite yarn having high flowability and excellent compatibility with a material having an interface at the time of composite spinning of polyethylene (PE) / polypropylene (PP), polyethylene (PE) / PET And to provide an adhesive resin composition for use in a complex room and an optimum manufacturing method for the same.
In order to solve the above problems, the present invention provides a high-density polyethylene comprising 60 to 85% by weight of high-density polyethylene; 0.01 to 5% by weight peroxide initiator; 0.1 to 10% by weight of maleic anhydride or a derivative thereof; 5 to 35% by weight of an olefin block copolymer; And 1 to 10% by weight of a polypropylene modified with maleic anhydride or a derivative thereof.
Also, the high-density polyethylene has a melt index (230 ° C, 2.16 kg load) of 20 to 40 g / 10 min.
The olefin block copolymer has a melt index (230 ° C, 2.16 kg load) of 10 to 30 g / 10 min.
The olefin block copolymer may be at least one selected from the group consisting of a propylene / ethylene block copolymer, an ethylene / octene block copolymer, an ethylene / butene block copolymer, and an ethylene / The present invention provides an adhesive resin composition for use in a composite room.
Also, the modified polypropylene has a graft ratio of 1 to 15% by weight.
According to another aspect of the present invention, there is provided a process for producing a modified polypropylene, comprising: reacting 80 to 95% by weight of polypropylene, 1 to 15% by weight of maleic anhydride or a derivative thereof, and 0.1 to 5% by weight of a peroxide initiator; And from 60 to 85% by weight of high density polyethylene, from 0.01 to 5% by weight of peroxide initiator, from 0.1 to 10% by weight of maleic anhydride or its derivative, from 5 to 35% by weight of an olefin block copolymer and from 1 to 10% by weight of said modified polypropylene The adhesive resin composition comprising a polyisocyanate compound and a polyisocyanate compound.
According to the present invention, by containing the polypropylene modified with high-density polyethylene, a peroxide initiator, maleic anhydride or a derivative thereof, an olefin block copolymer and maleic anhydride or a derivative thereof in an optimal range, the core- Can be added at the time of complex spinning to dramatically improve the interfacial adhesion force.
In addition, when core-sheath type fibers are made of non-long fibers, the interfacial separation phenomenon is reduced, and when the nonwoven fabric is produced together with pulp, the physical properties of the final product can be remarkably improved.
In addition, when the resin composition according to the present invention is added to the sheath layer to produce a composite spinning product, the adhesive strength to the pulp due to the polar group is excellent, thereby contributing to improvement of physical properties in the production of the nonwoven fabric.
Further, in the production of the adhesive resin composition for composite spinning, the modified polypropylene having the optimum composition is prepared and then melt-extruded together with the high-density polyethylene, the peroxide initiator, the maleic anhydride or the derivative thereof and the olefin block copolymer, It is possible to provide a method for effectively producing an excellent adhesive resin composition using a composite compound.
Hereinafter, preferred embodiments of the present invention will be described in detail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Throughout the specification, when an element is referred to as "including " an element, it means that it can include other elements, not excluding other elements, unless specifically stated otherwise.
The inventors of the present invention have found that when a core sheath type fiber such as polyethylene (PE) / polypropylene (PP), polyethylene (PE) / PET (polyethylene terephthalate) As a result of intensive studies on the resin composition, it has been found that a resin composition containing an optimal range of high-density polyethylene, peroxide initiator, maleic anhydride or a derivative thereof, an olefin block copolymer and polypropylene modified with maleic anhydride or a derivative thereof, It was found that the interfacial adhesion force can be significantly improved, and the present invention has been achieved.
Accordingly, the present invention relates to a rubber composition comprising 60 to 85% by weight of high density polyethylene; 0.01 to 5% by weight peroxide initiator; 0.1 to 10% by weight of maleic anhydride or a derivative thereof; 5 to 35% by weight of an olefin block copolymer; And 1 to 10% by weight of a polypropylene modified with maleic anhydride or a derivative thereof.
The high-density polyethylene used in the present invention has a density of 0.930 to 0.980 g / cm 3, and its physical properties are not particularly limited. However, the optimum melt index (230 ° C, 2.16 kg load) To 40 g / 10 min, and more preferably 25 to 35 g / 10 min.
Such high-density polyethylene is contained in an amount of 60 to 85% by weight, preferably 65 to 80% by weight, based on the total resin composition, considering the adhesive strength between the core-sheath and the polyethylene, have.
The maleic anhydride or its derivative is grafted to high-density polyethylene through melt extrusion together with the high-density polyethylene to form a branched chain. The grafted modified polyethylene resin can make the adhesive composition have a homogeneous composition and distribution, And may also serve to improve the adhesion of the final resin composition.
The maleic anhydride or the derivative thereof is contained in an amount of 0.1 to 10 wt%, preferably 0.5 to 3 wt%, based on the total resin composition, in order to maximize the adhesive strength of the final resin composition by having an optimum graft rate of the high-density polyethylene . If the content of the maleic anhydride or its derivative is less than 0.1% by weight, the compatibility of the adhesive resin composition and the uniformity of the composition may be deteriorated. If the content of the maleic anhydride or its derivative is more than 10% by weight, the adhesive strength, Flexibility may be degraded.
The peroxide initiator is a compound capable of generating a radical in the high-density polyethylene resin and allowing the graft reaction of maleic anhydride or its derivative to the polyolefin, and any initiator that can be commonly used for polymerization or copolymerization can be used without limitation have. For example, hydrogen peroxide, ketone peroxide, methyl ethyl ketone peroxide, cyclohexanone peroxide, methyl isobutyl ketone peroxide, diacyl peroxide, lauroyl peroxide, isobutyryl peroxide, acetyl peroxide, 2,4-dichlorobenzoyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane (DTBPH, 2,5-dimethyl- 2,5-di (t-butylperoxy) hexane) or dicumyl peroxide may be used.
The content of the peroxide initiator is 0.01 to 5 wt%, preferably 0.1 to 3 wt%, based on the total resin composition. When the content of the peroxide initiator is less than 0.01% by weight, it is difficult to sufficiently perform the graft reaction with the high-density polyethylene resin and maleic anhydride.
In the present invention, the modified polypropylene resin may be produced by a reactive extrusion method or a solution method, such as maleic anhydride or a derivative thereof, grafted with a branched chain, as in the case of the modified polyethylene resin, and examples thereof include polypropylene, And a peroxide initiator are dissolved in toluene, reacted in the reactor for 4 hours or more, washed with acetone, and dried.
The modified polypropylene may preferably be composed of a resin composition comprising 80 to 95% by weight of polypropylene, 0.1 to 5% by weight of peroxide initiator, and 1 to 15% by weight of maleic anhydride or a derivative thereof, 90 to 95% by weight of polypropylene, 0.5 to 3% by weight of peroxide initiator, and 3 to 8% by weight of maleic anhydride or a derivative thereof. In addition, when the graft ratio is 1 to 15% by weight, preferably 3 to 12% by weight, it is suitable for improving the adhesive force between the material constituting the core-sheath, particularly polyethylene and polypropylene.
The peroxide initiator used for the production of the modified polypropylene resin is a compound which generates radicals in the polypropylene and enables graft reaction of the polyolefin with maleic anhydride or the like, and is usually used for polymerization or copolymerization 2,5-di (t-butylperoxy) hexane (DTBPH), 2,5-dimethyl-2,5-di hexane) or dicumyl peroxide may be used.
Such modified polypropylene is contained in an amount of 1 to 10% by weight, preferably 2 to 5% by weight, based on the total resin composition, considering the adhesive strength between the material constituting the core-sheath, particularly polyethylene and polypropylene ≪ / RTI >
In the present invention, the olefin block copolymer is used for improving the compatibility with the high density polyethylene and the modified polypropylene. Preferably, the olefin block copolymer is a propylene / ethylene block copolymer, an ethylene / octene block copolymer, an ethylene / butene block copolymer a terpolymer or an ethylene / hexene block copolymer may be used, more preferably a propylene / ethylene block copolymer may be used. In order to maximize the improvement of the compatibility, it is preferable to use a resin having a density of 0.86 to 0.90 g / cm 3, and a resin having a melt index (230 ° C, 2.16 kg load) of 10 to 30 g / 10 min, More preferably 15 to 25 g / 10 min.
Such an olefin block copolymer is contained in an amount of 5 to 35% by weight, preferably 10 to 30% by weight, based on the total resin composition, considering the adhesive strength between the material constituting the core-sheath, particularly polyethylene and polypropylene .
The composite resin adhesive resin composition according to the present invention may further contain a tackifier, an antioxidant and the like in accordance with the use thereof.
The tackifier not only has a higher adhesive property but also has high flexibility and elasticity so that high moldability can be ensured in a complex spinning process. Examples of the tackifier include aromatic petroleum resins, aliphatic Petroleum resin, hydrogenated petroleum resin, rosin acid, rosin ester, hydrogenated rosin resin, coumarone resin, terpene resin, phenol resin, polybutene and the like can be used.
Also, the antioxidant is an additive used to perform a role of a radical stopper. It suppresses the excessive reaction of the radicals generated by the peroxide initiator to lower the reaction rate. As the antioxidant, a phenolic primary antioxidant or a phosphate- A secondary antioxidant may be used, for example, IRGANOX 1010 or NA-11KY may be used.
The composite resin adhesive resin composition according to the present invention is prepared by first preparing a modified polypropylene, mixing and melt extruding the high density polyethylene, peroxide initiator, maleic anhydride or a derivative thereof, and an olefin block copolymer in the above composition.
In other words, it is possible to manufacture the adhesive resin composition for composite spinning even when the modified polypropylene and the modified polyethylene are separately mixed together with other additives after the preparation thereof, respectively. However, in order to achieve improved elasticity and flexibility while securing higher adhesive strength and mechanical properties, In the invention, such modified polypropylene can be obtained by reacting high-density polyethylene, a peroxide initiator, maleic anhydride or a derivative thereof, and olefin block copolymer components. Specifically, the reaction extrudate may be formed by melt extruding the components at a temperature of 180 to 260 ° C. The reaction extrusion may be performed using a twin screw extruder. For example, a high density polyethylene, a modified polypropylene, an olefin block copolymer, a peroxide initiator, maleic anhydride and the like are mixed with a main feeder main feeder. In the case of antioxidants, they can be prepared by injecting the mixture through a side feeder in a time lag.
Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, the following examples are illustrative of the present invention, and the present invention is not limited to the examples described below.
Example 1
The polypropylene was melted in toluene at a ratio of 94% by weight of polypropylene, 5% by weight of maleic anhydride and 1% by weight of peroxide initiator (DTBPH), reacted in the reactor for 4 hours or longer, washed with acetone and dried to prepare modified polypropylene. Then, 73.5% by weight of the modified polypropylene prepared above, 73.5% by weight of high density polyethylene (density 0.95 g / cm3, melt index 30 g / 10 min), 1% by weight of maleic anhydride, 2.5% by weight of peroxide initiator (DTBPH) The mixture was mixed at a ratio of polymer (density: 0.88 g / cm 3, melt index: 20 g / 10 min) in an amount of 20 wt% and subjected to reaction extrusion at a temperature of 200 캜 in a 40 mm twin screw extruder.
Example 2
Examples 1 and 2 were prepared in the same manner as in Example 1, except that 5 parts by weight of modified polypropylene, 65 parts by weight of high density polyethylene, 3 parts by weight of maleic anhydride, 3 parts by weight of peroxide initiator and 24 parts by weight of propylene / A resin composition was prepared in the same manner.
Example 3
Examples 1 and 2 were prepared in the same manner as in Example 1 except that 2 parts by weight of modified polypropylene, 80 percent by weight of high density polyethylene, 0.5 percent by weight of maleic anhydride, 0.1 percent by weight of peroxide initiator and 17.4 percent by weight of propylene / A resin composition was prepared in the same manner.
Comparative Example 1
A resin composition was prepared in the same manner as in Example 1, except that the modified polypropylene prepared in Example 1 was used in an amount of 80 wt% of polypropylene, 19 wt% of maleic anhydride and 1 wt% of peroxide initiator (DTBPH).
Comparative Example 2
A resin composition was prepared in the same manner as in Example 1, except that 62.5% by weight of high density polyethylene and 12% by weight of maleic anhydride were used in Example 1.
Comparative Example 3
A resin composition was prepared in the same manner as in Example 1 except that 69 weight% of high density polyethylene and 7 weight% of peroxide initiator were used in Example 1.
Comparative Example 4
A resin composition was prepared in the same manner as in Example 1 except that the content of high density polyethylene was adjusted to 53.5 wt% and the content of propylene / ethylene block copolymer was adjusted to 40 wt%.
Comparative Example 5
A resin composition was prepared in the same manner as in Example 1 except that the content of high-density polyethylene was adjusted to 64.5 wt% and the content of modified polyethylene was adjusted to 12 wt%.
Comparative Example 6
A resin composition was prepared in the same manner as in Example 1, except that the content of high-density polyethylene was adjusted to 76 wt% and the content of modified polyethylene was adjusted to 0.5 wt%.
Comparative Example 7
The polypropylene was melted in toluene at a ratio of 94% by weight of polypropylene, 5% by weight of maleic anhydride and 1% by weight of peroxide initiator (DTBPH), reacted for 4 hours or more in a reactor, washed with acetone and dried to prepare a modified polypropylene. In the same manner, modified polyethylene was produced in a ratio of 97.2% by weight of high density polyethylene (density 0.95 g / cm 3, melt index 30 g / 10 min), 0.8% by weight of maleic anhydride and 2% by weight of peroxide initiator (DTBPH). The mixture was then mixed at a ratio by weight of 3% by weight of the modified polypropylene, 77% by weight of modified polyethylene and 20% by weight of a propylene / ethylene block copolymer (density 0.88 g / cm 3, melt index 20 g / 10 min) And then extrusion was conducted at a temperature of 40 DEG C to prepare an adhesive resin composition.
Test Example
The resin compositions prepared according to the above Examples and Comparative Examples were laminated as a tie-resin between polyethylene and polypropylene using a multilayer film molding machine (line speed 5 m / min) / tie-resin / PP). The peel strength of the film was measured by applying a peel speed of 300 mm / min on the basis of ASTM D882. For the measurement of Al peel strength, adhesive specimens were prepared at 190 ° C, 100 bar, and pressurizing time of 1 minute. The size of the specimen was 70 mm in width, 15 mm in length, and 250 μm in thickness, and consisted of Al / tie-resin / Al. The peel strength of the specimen was measured at a peel speed of 100 mm / min based on ASTM D903, and the results are shown in Table 1 below.
As shown in Table 1, in the case of a resin composition containing an optimal range of specific high density polyethylene, peroxide initiator, maleic anhydride, olefin block copolymer and modified polypropylene according to the present invention, Peel strength of 1 kgf / 15 mm or more, preferably 1.2 gf / 15 mm or more when peel speed is applied.
On the contrary, when the content of peroxide initiator, maleic anhydride, olefin block copolymer or modified polypropylene is out of the content range according to the present invention (Comparative Examples 2 to 6), or the modified polypropylene constituted with the optimum content is not used (Comparative Example 1), and when the modified polypropylene and modified polyethylene were respectively melt-extruded (Comparative Example 7), the interlaminar peeling strength was lowered to the level of 50%.
On the other hand, in the case of a resin composition containing an optimum range of Al peel strength according to the present invention in a specific range of a specific high-density polyethylene, peroxide initiator, maleic anhydride, olefin block copolymer and modified polypropylene, 100 mm / min Peel strength of 8 kgf / 15 mm or more at the peel speed application. From this, it can be seen that when the composite resin product according to the present invention is added to the sheath layer, the adhesive strength to the pulp due to the polar group is excellent, thereby contributing to the improvement of the physical properties in the production of the nonwoven fabric.
The preferred embodiments of the present invention have been described in detail above. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are included in the scope of the present invention Should be interpreted.
Claims (6)
60 to 85% by weight of high-density polyethylene;
0.01 to 5% by weight peroxide initiator;
0.1 to 10% by weight of maleic anhydride or a derivative thereof;
5 to 35% by weight of an olefin block copolymer; And
1 to 10% by weight of a polypropylene modified with maleic anhydride or a derivative thereof;
Wherein the adhesive resin composition is a thermoplastic resin.
Wherein the high-density polyethylene has a melt index (230 DEG C, 2.16 kg load) of 20 to 40 g / 10 min.
Wherein the olefin block copolymer has a melt index (230 DEG C, 2.16 kg load) of 10 to 30 g / 10 min.
Wherein said olefin block copolymer is at least one selected from the group consisting of propylene / ethylene block copolymers, ethylene / octene block copolymers, ethylene / butene block copolymers and ethylene / hexene block copolymers. Adhesive resin composition.
Wherein the modified polypropylene has a graft ratio of 1 to 15% by weight.
80 to 95% by weight of polypropylene, 1 to 15% by weight of maleic anhydride or a derivative thereof, and 0.1 to 5% by weight of a peroxide initiator to produce a modified polypropylene; And
Extruding 0.1 to 10% by weight of maleic anhydride or a derivative thereof, 5 to 35% by weight of an olefin block copolymer and 1 to 10% by weight of the modified polypropylene, step;
Wherein the adhesive resin composition is a thermoplastic resin.
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| KR1020150130903A KR101768323B1 (en) | 2015-09-16 | 2015-09-16 | Adhesive polypropylene resin composition for complex fiber spinning and preparing method of the same |
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| KR1020150130903A KR101768323B1 (en) | 2015-09-16 | 2015-09-16 | Adhesive polypropylene resin composition for complex fiber spinning and preparing method of the same |
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| KR101768323B1 true KR101768323B1 (en) | 2017-08-16 |
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| KR20220015176A (en) * | 2020-07-30 | 2022-02-08 | 한보일렉트(주) | An Adhesive Composition for Coating a Pipe and a Method for Coating the Pipe |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5167765A (en) | 1990-07-02 | 1992-12-01 | Hoechst Celanese Corporation | Wet laid bonded fibrous web containing bicomponent fibers including lldpe |
| US5948529A (en) | 1997-02-26 | 1999-09-07 | Hna Holdings, Inc. | Bicomponent fiber |
| JP2005105169A (en) * | 2003-09-30 | 2005-04-21 | Mitsubishi Chemicals Corp | Modified olefinic polymer composition and method for producing the same |
| KR100639552B1 (en) * | 2005-12-02 | 2006-11-01 | 호남석유화학 주식회사 | Core-sheath type resin composition for conjugate spinning fiber |
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- 2015-09-16 KR KR1020150130903A patent/KR101768323B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5167765A (en) | 1990-07-02 | 1992-12-01 | Hoechst Celanese Corporation | Wet laid bonded fibrous web containing bicomponent fibers including lldpe |
| US5948529A (en) | 1997-02-26 | 1999-09-07 | Hna Holdings, Inc. | Bicomponent fiber |
| JP2005105169A (en) * | 2003-09-30 | 2005-04-21 | Mitsubishi Chemicals Corp | Modified olefinic polymer composition and method for producing the same |
| KR100639552B1 (en) * | 2005-12-02 | 2006-11-01 | 호남석유화학 주식회사 | Core-sheath type resin composition for conjugate spinning fiber |
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