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    High bulk yarn formable mixtures of linear polymeric thermoplastic materials
    1.
    发明授权
    High bulk yarn formable mixtures of linear polymeric thermoplastic materials 失效
    线性聚合物热塑性材料的高速纱线弹性混合料

    公开(公告)号：US3705074A

    公开(公告)日：1972-12-05

    申请号：US3705074D

    申请日：1971-05-21

    Applicant: ALLIED CHEM

    Inventor： LAMB GEORGE E R ,  PREVORSEK DUSAN C ,  KOTLIAR ABRAHAM M ,  OSWALD HENDRIKUS J

    IPC: D01D5/42 ,  D01F6/88 ,  D02G3/06

    CPC classification number: D01D5/423 ,  D01F6/88 ,  Y10S57/907 ,  Y10T428/2913 ,  Y10T428/2973

    Abstract: THE INVENTION CONTEMPLATES THE PREPARATION OF FIBRILLATED YARNS OR STRANDS HAVING HIGH BULK AND GOOD TACTILE PROPERTIES FROM A UNITARY STRUCTURE, E.G. MONOFLAMENTS. THE MONOFILS, TAPES, FILMS AND THE LIKE HEREAFTER REFERRED TO AS A MONOFIL ARE EXTRUDED FROM POLYMER MIXTURES CONSISTING OF (A) A LOW MOLECULAR WEIGHT POLYESTER AND (B) ONE OR MORE OF THE FOLLOWING POLYMERS; (I) A FIBER FORMING POLYAMIDE, (II) A FIBER FORMING POLYESTER AND (III) A FIBER FORMING POLYOLEFIN IN BLENDS OR MIXTURES WHOSE COMPOSITION IS CAPABLE OF PRODUCING SUITABLE FIBERS. THE SPLITTING OF THE MONOFIL INTO A RELATIVELY HIHG BULK STRUCTURE CONTAINING MANY FIBRILS IS EFFECTED BY SUITABLE MECHANICAL WORKING WHICH BREAKS OR FISSURES THE MONOFIL INTO SEPARATE FIBRILS.

    Method of imparting wrinkle resistance to fabrics
    3.
    发明授权
    Method of imparting wrinkle resistance to fabrics 失效
    阻止织物抗皱的方法

    公开(公告)号：US3634163A

    公开(公告)日：1972-01-11

    申请号：US3634163D

    申请日：1970-05-28

    Applicant: ALLIED CHEM

    Inventor： LAMB GEORGE E R ,  PREVORSEK DUSAN C ,  OSWALD HENDRIKUS J

    IPC: D02G3/40 ,  B32B5/02

    CPC classification number: D02G3/402 ,  D02G3/40 ,  Y10T442/69 ,  Y10T442/696

    Abstract: A yarn structure is provided that imparts improved wrinkle resistance in fabrics produced therefrom. The yarn is composed of plurality of filaments or strands that are intermittently connected or fused by an essentially permanent bond, i.e., analogous to spot welding, along their lengths. The appropriate distribution of these points of bonding, preferably varying from a distance of about 20 filament diameters as an upper limit to a frequency of about one in 2,000 filament diameters measured along the length of the fiber as a lower density limit, is obtained by removing any size, lubricant or finish from the fiber, applying an electrical charge, and spraying or otherwise applying a thermoplastic polymer to the surface of the fiber. Droplets of the applied polymer adhere to the fiber and provide effective jointer points between adjacent fibers.

    Abstract translation: 提供了一种纱线结构，其在由其制备的织物中赋予改善的抗皱性。 纱线由多根长丝或股线构成，长丝或股线沿其长度通过基本上永久的接合，即类似于点焊而间断地连接或熔合。 这些粘合点的适当分布优选地从作为上限的大约20个长丝直径的距离变化到沿纤维的长度测量的2000个细丝直径的约1个的频率作为较低的密度极限，通过去除 来自纤维的任何尺寸，润滑剂或光洁度，施加电荷，以及喷射或以其它方式将热塑性聚合物施加到纤维的表面。 施加的聚合物的液滴粘附到纤维上并在相邻纤维之间提供有效的接合点。

    Blends of polyamides,polyester and polyolefins containing minor amounts of elastomers
    6.
    发明授权
    Blends of polyamides,polyester and polyolefins containing minor amounts of elastomers 失效
    包含弹性体微量元素的聚酰胺，聚酯和聚烯烃的混合物

    公开(公告)号：US3546319A

    公开(公告)日：1970-12-08

    申请号：US3546319D

    申请日：1968-09-10

    Applicant: ALLIED CHEM

    Inventor： PREVORSEK DUSAN C ,  LAMB GEORGE E R

    IPC: C08L23/02 ,  C08L67/02 ,  C08L77/00 ,  C08G39/10 ,  C08G41/04

    CPC classification number: C08L23/02 ,  C08L23/10 ,  C08L53/00 ,  C08L67/02 ,  C08L77/02 ,  C08L2205/035 ,  C08L2666/18 ,  C08L2666/20 ,  C08L2666/24 ,  C08L23/00 ,  C08L77/00 ,  C08L23/12 ,  C08L55/02

    Abstract: 1,220,544. Polymeric filaments. ALLIED CHEMICAL CORP. 17 June, 1969 [10 Sept., 1968], No. 30712/69. Heading B5B. [Also in Division C3] A fibre is made by extruding a molten polymer blend at 243-280‹ C. through a die at 252- 290‹ C., quenching, drawing to 3-4 times original length, e.g. by passing round a draw pin at 85‹ C. and over heating plate at 150-160‹ C. The stretched mono-filament is then crushed between rollers and vibrated by passing through a high velocity jet stream of air, which may or may not split it into fibrils depending on the composition and temperature involved. The blend comprises at least two of: (i) a polyamide, (ii) a polyester, and (iii) a polyolefin; and also (iv) a synthetic elastomer. 80 wt. per cent of any of (i), (ii), or (iii) are present. 0À5-15 wt. per cent (iv) is present. (iv) has (a) glass transition temperature-100‹ to 0‹ C., and (b) secant modulus at 300% extension of 100-3000 p.s.i. at 20‹ C. At extrusion temp., (iv) is sufficiently stable to withstand drawing, and has viscosity 10 2 -10 4 poise at shear-rate 150 see. -1 , and low enough to allow (iv) to be dispersed in the extrudate as particles of diameter # 5Ám., and sufficiently low viscosity at drawing temp. to form an elongated elastomer phase in the drawn phase, and adheres more strongly to each of the polymers than the polymers do to each other. Polyamide (i) may be, e.g. a polylactam, polycaproamide, or polyhexamethylene adipamide or sebacamide; exemplified is polycaprolactam with number av. M.W. 22,000-27,000; melt index is preferably 10- 70 g./10 min./260‹ C./2160g. Reduced viscosity is 0À4-4À0 dl./g. in meta-cresol at 25‹ C. Polyester (ii) is preferably polyethylene terephthalate which may have reduced viscosity in dl./g. at 25‹ C. of 0À24-0À5 in o-chlorophenol or 0À65 in m-cresol; many other polyesters are referred to. Polyolefin (iii) may be a polymer or copolymer of ethylene, propylene, or 4-α-methylpentene; exemplified is polypropylene with viscosity av. M.W.Mv. of 300,000 or melt-index 7À5 g./10 min. Elastomer (iv) may be: a block butadiene/ styrene copolymer; or a random and/or block ethylene/propylene or butadiene/acrylonitrile copolymer. (iv) should exhibit no or very little crystallinity after processing. It should form a distinct phase in the blend at all times. The blends may be prepared by mixing at up to 350‹ C. (i), (ii), and/or (iii) may be dry-blended before melting, or the entire mixing can be performed in the melt. Or the polymers may be dissolved in a common solvent and precipitated by evaporation of the solvent or addition of a non-solvent. 1-60% other polymers may be added to the blend.

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