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4293613 |
Disclosed is an acrylic fiber having improved basic dyeability. The fiber is made by a process wherein a copolymer of an acrylic monomer and a sulfonated vinyl monomer is dissolved in a solvent to form a spinning dope and a solution of p...
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4167544 |
Homogeneous blends are provided comprising a diblock copolymer of isoprene and butadiene and a homopolymer constituent which is polyisoprene, polybutadiene or mixtures of polyisoprene and polybutadiene.
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4143011 |
A vinylidene chloride copolymer composition is produced by copolymerizing 60 to 95 wt. % of vinylidene chloride and 40 to 5 wt. % of a comonomer in the presence of a rigid polymer which has a softening temperature of 50 to 180° C. and a...
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4141936 |
The impact strength of styrene-acrylonitrile copolymer is significantly improved without loss of injection moldability by the addition thereto of ethylene-vinyl acetate copolymer or ethylene-vinyl acetate-vinyl alcohol terpolymer togethe...
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4108948 |
Compatibilized blends and composites of (a) a thermoplastic copolymer of an alkenyl aromatic monomer and an alkenyl nitrile monomer together with (b) a thermoplastic copolymer of ethylene and a vinyl ester are formed by mixing the copoly...
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4091055 |
Light-transmitting compositions containing (1) 50-99% by weight of polyvinylidene fluoride or a vinylidene fluoride copolymer and (2) 1-50% by weight of a copolymer of a vinyl fluoride monomer and at least one acrylate monomer selected f...
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4081498 |
Acrylic fibers of a fiber-forming first acrylonitrile polymer containing at least 50% acrylonitrile, a flame retardant amount of a halogen-containing vinyl monomer, and any balance of a halogen-free vinyl monomer having heterogeneously d...
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3975455 |
The gas permeability of a polymeric material is altered by irreversibly mechanically stressing in at least one direction a polymeric material which is a mixture of two phases where one phase is evenly distributed throughout a second phas...
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3949016 |
The present invention describes a process of producing block copolymers from monomers of different types by polymerization in two successive steps. The first step consists in polymerizing monomers of a first type by means of coordinated ...
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RE28594 |
Stippled surface thermoplastic articles are produced by extruding a mixture of a polymer of higher fluidity degree and one of lower fluidity degree at a temperature above the temperature of fluidization of the former but below the temper...
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3907931 |
A novel class of resins having excellent impact strength, flexural modulus and heat distortion characteristics consists essentially of blends of polystyrene with graded styrene-butadiene AB block copolymers. In each AB block copolymer th...
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3907929 |
This invention comprises blends of otherwise relatively incompatible polymers, particularly polystyrene and polybutadiene in weight ratios of at least about 4:1, by the incorporation of graded styrene-butadiene AB block copolymers in whi...
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3906058 |
A novel class of resins having excellent impact strength, flexural modulus and heat distortion characteristics consists essentially of blends of vinyl aromatic polymers and graded ABA block copolymers in which each A represents essential...
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3906057 |
This invention comprises blends of otherwise relatively imcompatible polymers, particularly vinyl aromatic polymers and conjugated aliphatic diene polymers, by the incorporation of graded ABA block copolymers, the A and B segments of whi...
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3236914 |
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3234313 |
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3173163 |
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3117362 |
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3099067 |
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3097991 |
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2982670 |
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2817118 |
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2700657 |
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2628208 |
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2531234 |
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2364024 |
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2353457 |
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3846226 |
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3698994 |
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3655829 |
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