摘要:
Disclosed are films obtained from blends of ethylene copolymers with organic acid salt-modified potassium ionomeric copolymers. The films of the present invention can be welded using RF energy.
摘要:
Disclosed is a composition comprising, consisting essentially of, consisting of, or produced from polyvinyl chloride, filler, and an impact strength-retaining amount of an elastomer wherein the modifier is or includes an ethylene copolymer, or acid anhydride- or acid monoester-modified polyolefin, or combinations thereof. Also disclosed is a process comprising combining an impact strength-retaining amount of an elastomer to a blend that comprises or is produced by combining a rigid PVC formulation and one or more fillers. The combining is carried out under a condition sufficient to prevent or minimize the reduction of impact strength of the blend, to reduce the molten viscosity of the blend, or to minimize the loss in stiffness (flexural modulus) of the blend, in comparison to the unmodified blend.
摘要:
The invention provides a probe set having at least one probe of a light wire which can be resiliently deflected to pass from the nasolacrimal duct to the nasal inferior meatus. The probe has an enlarged and rounded distal end portion to limit the possibility of damage to tissue when the probe is inserted. A very flexible tube of minimal rigidity is engaged over a proximal end of the probe and a heat shrunk sleeve is attached to join the tube to the probe. Preferably the sleeve has a main portion containing a first end portion containing part of the probe adjacent the tube, a second end portion containing a part of the tube adjacent said end of the probe, and a main portion containing the ends of the probe and the tube. The sleeve applies a compressive radial pressure to attach the tube to the probe and defines a transition portion between the first end portion and the main portion of the sleeve to minimise the possibility of snagging as the probe set is advanced into the lacrimal duct. The probe set preferably includes a second probe at the other end of the tube.
摘要:
Devices, kits and methods for non-suture end-to-end and end-to-side anastomosis of tubular tissue members employ tubular connection members having clip retaining elements comprising annular grooves or flanges in the connection members; and spring clips which comprise a ring-shaped body with separable opposed ends whereby a circular opening defined by the body can be enlarged; the opposed ends have handling elements to facilitate handling of the clips and separation of the opposed ends; specially developed instruments facilitate use of the devices and the anastomosis procedure can be completed much more rapidly than with conventional techniques and has the significant advantage of intima to intima contact at the site of anastomosis with no foreign material exposed to the lumen of the vessels being joined.
摘要:
Devices, kits and methods for non-suture end-to-end and end-to-side anastomosis of tubular tissue members employ tubular connection members having clip retaining elements comprising annular grooves or flanges in the connection members; and spring clips which comprise a ring-shaped body with separable opposed ends whereby a circular opening defined by the body can be enlarged; the opposed ends have handling elements to facilitate handling of the clips and separation of the opposed ends; specially developed instruments facilitate use of the devices and the anastomosis procedure can be completed much more rapidly than with conventional techniques and has the significant advantage of intima to intima contact at the site of anastomosis with no foreign material exposed to the lumen of the vessels being joined.
摘要:
This invention provides a lighting source for use with a speculum. The source includes a casing having a hoop and a main portion, and a light emitter coupled to the hoop at a location diametrically opposite the main portion. An electrical energy source is contained in the main portion and the energy source is coupled to the light emitter. Switch means is provided for selectively operating the light emitter and the structure is attachable to a speculum with the light emitter positioned to illuminate the body opening when viewed through the hoop.
摘要:
A curable thermoplastic elastomeric blend comprising: (a) from 15 to 60 weight percent of a polyalkylene phthalate polyester polymer or copolymer and; (b) from 40 to 85 weight percent of a poly(meth)acrylate or polyethylene/alkyl (meth)acrylate rubber in combination with an effective amount of peroxide free-radical initiator and an organic multiolefinic coagent to cross-link which upon extrusion or injection molding dynamically cross-link producing a melt processible thermoplastic elastomeric composition having a polyalkylene phthalate polyester polymer or copolymer continuous phase and of a cross-linked polyacrylate or polyethylene/acrylate rubber dispersed phase. Such compositions are useful in the manufacture of rubber parts having excellent resistance to lubricating oils and greases.
摘要:
A composition is disclosed which comprises a mixture of a poly(trimethylene terephthalate) polymer composition, a nucleating agent, and an ethylene copolymer. Also disclosed in a method for reducing the melt viscosity of nucleated poly(trimethylene terephthalate) polymer composition.
摘要:
Disclosed are polyamide potassium ionomer polyol compositions that have antistatic properties. Also disclosed are articles, including laminates and monolayer or multilayer structures comprising such compositions to which neither powders nor dusts easily adhere electrostatically.
摘要:
Disclosed are polyester compositions comprising a polyester polymer, such as poly(lactic acid), and an impact modifier comprising a tubular reactor produced ethylene copolymer derived from monomers (a) ethylene; (b) one or more olefins of the formula CH2═C(R1)CO2R2, where R1 is hydrogen or an alkyl group with 2-8 carbon atoms and R2 is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH2═C(R3)CO2R4, where R3 is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R4 is glycidyl.
摘要翻译:公开了包含聚酯聚合物如聚(乳酸)的聚酯组合物和包含管状反应器的抗冲改性剂,其制备由单体(a)乙烯衍生的乙烯共聚物; (b)一种或多种式CH 2 -C(R 1)CO 2 R 2的烯烃,其中R 1是氢或具有2-8个碳原子的烷基,R 2是具有1-8个碳原子的烷基,例如甲基,乙基 ,或丁基; 和(c)一种或多种式CH 2 -C(R 3)CO 2 R 4的烯烃,其中R 3是氢或具有1-6个碳原子的烷基,例如甲基,R 4是缩水甘油基。