10 results about "Polymer morphology" patented technology

The invention provides a degradation regeneration method of a waste reverse osmosis membrane, which comprises the following steps: cleaning the waste reverse osmosis membrane, fixing the waste reverse osmosis membrane in a flat state, and carrying out plasma treatment to obtain a degradation regeneration membrane. According to the regeneration method provided by the invention, the form of the polymer on the surface of the waste reverse osmosis membrane is regulated and controlled through the physical, chemical or physicochemical synergistic etching effect of the plasma, the waste membrane is converted into the nanofiltration membrane or the ultrafiltration membrane, meanwhile, compared with a commercial nanofiltration membrane or ultrafiltration membrane, the interception capacity of inorganic ions is improved, and in the treatment process, the treatment efficiency is improved. No chemical reagent is used, the process is simple, the treatment time is short, and the regeneration efficiency of the waste reverse osmosis membrane is greatly improved.

There is provided an aqueous personal care rinse-off formulation, the aqueous personal care rinse-off formulation comprising: a dermatologically acceptable vehicle; a dermatologically acceptable cleansing surfactant; and a gradient polymer comprising: 5%-35% by weight of structural units of (meth) acrylic acid; 35 wt% to 65 wt% of a structural unit of C1-8 alkyl (meth) acrylate; gt; 10% to 30% by weight of structural units of a dedicated associative monomer having structure I wherein R1 is a linear saturated C12-26 alkyl group; wherein R2 is hydrogen or a methyl group, and wherein n is from 10 to 30; 0.01 wt% to 2 wt% of a structural unit of a polyethylenically unsaturated monomer; wherein the gradient polymer comprises lt; 0.05% by weight of structural units of sulfonated monomers; wherein the polymer comprises lt; 0.02% by weight of structural units of a monomer having structure II wherein R3 is-H or-CH3; r4 is-H or a-C1-4 alkyl group; r5 is a-C1-4 alkyl group; a is 0 to 50; b is 0 to 20; c is 0 to 50; a + c is 1 to 100 and d is 1 to 4; and wherein the gradient polymer has a gradient polymer morphology.

5 to 35% by weight of a structural monomer unit of a (meth)acrylic acid monomer, 35 to 65% by weight of a structural monomer unit of a C 1-8 alkyl (meth)acrylate monomer, and more than 10 to 30% by weight of a structure (II): [Chemical Formula 1] JPEG2026521909000033.jpg28170 (wherein R 1 is selected from linear saturated C 12-26 alkyl groups, R 2 is selected from hydrogen and methyl groups, and n is 10 to 30) of a structural monomer unit of a special associative monomer, 0.01 to 2% by weight of a structural unit of a polyvalent ethylenically unsaturated monomer, and [[ID=1~5]] a gradient polymer containing <0.05% by weight of a structural monomer unit of a sulfonated monomer and <0.02% by weight of a structure (II):[[ID=[]] 【化2】 [[ID=[]]JPEG2026521909000034.jpg36170 (wherein each R 3 is selected from -H and -CH3, R 4 / / 这里的“R 4 は、-H及び-C 1-4 アルキル基から選択され”,推测原文可能有误,这里按推测修正为“is selected from -H and -C<000000]]alkyl groups”is selected from -H and -C 1-4 alkyl groups, R 5 is selected from -C 1-4 alkyl groups, a is 0 to 50, b is 0 to 20, c is 0 to 50, a + c is 1 to 100, and d is 1 to 4) of a monomer having a structural unit, and a gradient polymer having a gradient polymer form is provided.

This invention discloses a method for crushing and purifying polyetheretherketone (PEEK), PEEK materials, and their applications. Belonging to the field of polymer composite materials technology, the method employs a process control approach using the polymerization mother liquor to regulate the polymer morphology in the polymerization solution, causing PEEK to precipitate in the form of spherical particles with a microspherical structure. Simple crushing yields low-particle-size ultrafine PEEK powder, with a particle size adjustable within the range of 8-100 micrometers and a high spheroidization rate. Simultaneously, the crushed low-particle-size ultrafine PEEK powder facilitates the purification of PEEK. Washing with organic solvents such as ethanol and acetone, and distilled water, PEEK powder can be obtained with high efficiency and cost-effectiveness. Due to the small particle size of PEEK, it is easy to purify. After simple purification, the cytotoxicity and hemolysis rate meet the standards for implantable medical-grade PEEK materials for human implantation, reducing the raw material costs of medical product manufacturing and enabling the general public to use more affordable and high-quality medical products.

Provided is a gradient polymer comprising: 5% to 35% by weight of structural units of a (meth) acrylic monomer; 35 wt% to 65 wt% of a structural unit of a C1-8 alkyl (meth) acrylate monomer; gt; 10% to 30% by weight of structural units of a dedicated associative monomer having structure (I) wherein R1 is selected from a linear saturated C12-26 alkyl group; r2 is selected from hydrogen and a methyl group, and n is from 10 to 30; 0.01 wt% to 2 wt% of a structural unit of a polyethylenically unsaturated monomer; wherein the gradient polymer comprises lt; 0.05% by weight of structural units of sulfonated monomers; wherein the gradient polymer comprises lt; 0.02% by weight of a structural unit (II) of a monomer having the structure (II) wherein R3 is selected from-H and-CH3; wherein R4 is selected from-H and a-C1-4 alkyl group; wherein R5 is selected from a-C1-4 alkyl group; wherein a is 0 to 50; wherein b is 0 to 20; wherein c is 0 to 50; wherein a + c is 1 to 100, and wherein d is 1 to 4; and wherein the gradient polymer has a gradient polymer morphology.

A method for manufacturing a toy building element includes providing an acrylonitrile butadiene styrene (ABS) waste material, screening the ABS waste material for at least one property indicative of regulatory compliance and / or polymer morphology, and recovering recycled ABS polymer from the screened ABS waste material by grinding and / or a solvent dissolution recycling process. A resin is obtained by mixing the recovered recycled ABS polymer optionally with one or more additives and optionally with one or more additional polymers selected from additional ABS polymers, styrene-acrylonitrile (SAN) polymer, and butadiene or butadiene-containing polymer. The toy building element is manufactured by processing the resin. In some embodiments, screening evaluates CMR substances, metal migration limits, butadiene-to-SAN ratio, butadiene sphere size distribution, and / or butadiene sphere crosslinking.

An aqueous personal care rinse-off formulation comprising a dermatologically acceptable vehicle, a dermatologically acceptable cleansing surfactant, and a gradient polymer comprising 5 to 35% by weight of structural units of (meth)acrylic acid, 35 to 65% by weight of structural units of C 1~8 alkyl (meth)acrylate, and > 10 to 30% by weight of a special associative monomer having structural unit I of the structure: [Chemical Formula 1] JPEG2026521927000038.jpg29170 wherein R 1 is a linear saturated C 12~26 alkyl group, wherein R 2 is hydrogen or a methyl group, and n is from 10 to 30, and a special associative monomer, and 0.01 to 2% by weight of a polyethylenically unsaturated monomer of the structural unit, and a gradient polymer, the gradient polymer comprising < 0.05% by weight of a sulfonated monomer of the structural unit, and the polymer comprising < 0.02% by weight of a monomer of the structural unit having structure II [Chemical Formula 2] JPEG2026521927000039.jpg38170 wherein R 3 is H or -CH3, R 4 is -H or -C 1~4 alkyl group, R 5 is -C 1~4 alkyl group, a is from 0 to 50, b is from 0 to 20, c is from 0 to 50, a + c is from 1 to 100, d is from 1 to 4, and the gradient polymer has a gradient polymer form, and an aqueous personal care rinse-off formulation is provided.

The invention relates to a conjugated polymer containing a 1, 3-benzothiazole-2-amide structure, a hole transport type thin film and an organic photovoltaic cell device. According to the conjugated polymer, halogen atoms are introduced to benzene ring active sites of a 1, 3-benzothiazole-2-amide structure so as to adjust the energy level and the carrier mobility, and amide end groups are adjusted so as to adjust the morphology and solubility of the polymer. Compared with the prior art, the hole transport type polymer containing the 1, 3-benzothiazole-2-amide structure has good thermal stability, has good response to sunlight, and can be used as a donor phase in an active layer of an organic photovoltaic cell device.

The present invention discloses an olefin polymerization catalyst composition, characterized in that the catalyst composition comprises a main catalyst and a carrier; the carrier is fluorinated silica gel particles; the main catalyst is a metallocene complex represented by general formula (I): (I). The present invention also discloses the preparation of the composition and its application in olefin polymerization reaction. The composition provided by the present invention can reduce or avoid the use of methylaluminoxane or borate reagent, while improving the polymer morphology.

An olefin polymerization catalyst composition, comprising a main catalyst and a carrier. The carrier is fluorinated silica gel particles, and the main catalyst is a metallocene complex represented by general formula (I).Also disclosed are the preparation of the composition and use of the composition in olefin polymerization reactions. The composition provided by the present invention can reduce or avoid the use of methylaluminoxane or borate reagents while improving polymer morphology.