Patent classifications
C08J2201/026
Crosslinked Polyolefin Foam and Process for Producing Same
The process disclosed includes an extruder under extrusion conditions at a temperature from 50° C. to 250° C., and a polymer composition. The polymer composition includes (A) greater than or equal to 5 wt % of a silane functionalized olefin-based polymer with first melting temperature, Tm1, (B) optionally, a nonsilane functionalized polyolefin, with second melting temperature, Tm2, (C) a highly effective silanol condensation catalyst (HEC), (D) a permeability modifier, and (E) optionally, a scorch inhibitor. The process includes introducing a physical blowing agent into the polymer composition to form a foamable composition. The foamable composition is cooled to a foaming temperature from 10° C. less than to 10° C. greater than Tm1. The foamable composition from an extruder exit die to form a foam composition. The foam composition is moisture cured to form a crosslinked foam composition having a density from 0.010 g/cc to 0.200 g/cc, and a gel content from 5% to 100%.
Thermally expandable compositions
The present invention relates to a thermally expandable composition comprising at least one peroxidically crosslinking polymer which does not contain glycidyl (meth) acrylate as a monomer in copolymerized form; at least one polymer, which is polymerized with glycidyl (meth) acrylate as a monomer present in a proportion of from 2 to 20% by weight, based on the respective polymer; at least one peroxide; and at least one endothermic chemical propellant, moldings containing this composition, and a method for sealing and filling cavities in components, for reinforcing or stiffening components, in particular hollow components, and for bonding movable components using such molded bodies.
ADSORBENT RESIN FOR REMOVING PERFLUORINATED POLLUTANTS FROM BODY OF WATER, PREPARATION THEREFOR, AND USE THEREOF
The present invention relates to an adsorbent resin for removing perfluorinated pollutants from a body of water, a preparation therefor and the use thereof. The objective is to solve the problem of traditional adsorbent materials, such as active carbon materials, having a poor effect in terms of removing perfluorooctanoic acid from water, being non-renewable, etc. In the present method, styrene and divinylbenzene are used as framework materials, a suitable pore-forming agent and a suitable dispersant are selected in order to prepare a macroporous resin with a moderate pore size, and an alkylation reaction is carried out at a low hindrance with p-xylylene dichloride (XDC) being used as a post-crosslinking agent, whereby a rigid benzene ring structure is introduced into the resin by means of post-crosslinking, thereby further increasing the hydrophobicity of the resin and increasing the crosslinking degree thereof; in addition, the micropore structure is adjusted in order to obtain an adsorbent resin with a narrow particle size distribution, a uniform pore size and a high specific surface area. The size of micropores in the resin is close to the molecular size of perfluorooctanoates in water, the adsorbate sieving capacity is strong, and the adsorption rate of perfluorinated compounds can be further improved.
CROSS-LINKED POLYOLEFIN ELASTOMER FOAMS
A foam is formed from a composition comprising at least 50 wt.% of an ethylene/alphaolefin copolymer, an olefin block copolymer, or a blend thereof; from 30 wt.% to 50 wt.% of an E/X/Y/Z epoxy-containing ethylene interpolymer, where E is an ethylene monomer comprising greater than 50 wt.% of the interpolymer, X is an (meth)acrylate, alkyl (meth)acrylate, or vinyl acetate comprising from 0 to 40 wt.% of the interpolymer, Y is glycidyl methacrylate and comprises 0.5 to 13 wt.% of the interpolymer, and Z is a copolymer unit derived from comonomers selected from the group consisting of carbon monoxide, sulfur dioxide, and acrylonitrile and comprises from 0 to 10 wt.% of the interpolymer; from 0.5 wt.% to 5 wt.% of a blowing agent; from 0.1 wt.% to 1 wt.% of an activator; and less than 0.05 wt.% of a curing agent.
FILM WITH VOID SPACES BONDED THROUGH CATALYSIS AND METHOD OF PRODUCING THE SAME
A film is provided with void spaces having a porous structure with less cracks and a high proportion of void space as well as having strength. The film with void spaces includes one kind or two or more kinds of structural units that form a structure with minute void spaces, wherein the structural units are chemically bonded through catalysis. For example, the abrasion resistance measured with BEMCOT® is in the range from 60% to 100%, and the folding endurance measured by the MIT test is 100 times or more. The film with void spaces can be produced by forming the precursor of the silicone porous body using sol containing pulverized products of a gelled silicon compound and then chemically bonding the pulverized products contained in the precursor of the silicone porous body. The chemical bond among the pulverized products is preferably a chemical crosslinking bond among the pulverized products.
Adhesive tape, backlight module, display device and method for manufacturing backlight module
The present disclosure provides an adhesive tape, a backlight module, a display device, and a method for manufacturing a backlight module. The adhesive tape includes: an adhesive body layer; an expandable structure layer on a side of the adhesive body layer and configured to fill a gap between the adhesive tape and a light guide plate of a backlight module through an expansion of the expandable structure layer.
NOVEL POROUS POLYMER MONOLITHS ADAPTED FOR SAMPLE PREPARATION
A porous polymer monolith comprises a polymer body having macroporous through-pores that facilitate fluid flow through the body and an array of mesopores adapted to bind from the fluid flow molecules of a predetermined range of sizes, wherein the surface area of the monolith is predominantly provided by the mesopores. Also disclosed is a method of making a porous polymer monolith. The method includes forming a polymer body by phase separation out of a solution containing at least a monomer, a crosslinker and a primary porogen, whereby the body contains multiple macroporous through-pores, wherein the solution further contains a secondary porogen comprising oligomers inert with respect to the monomer and cross-linker but chemically compatible with the monomer so as to form mesostructures within the polymer body during said phase separation, and washing the mesostructures from the body to provide an array of mesopores such that the surface area of the monolith is predominantly provided by the mesopores.
Article with Crosslinked Foam Layer Adhered to Substrate
The present disclosure provides an article. The article includes a crosslinked foam composition, an adhesive layer, and a substrate composed of an olefin-based polymer. The crosslinked foam composition includes an ethylene/a-olefin multi-block copolymer, an ethylene/propylene/diene terpolymer (EPDM), optional silicone rubber, optional blend component selected from ethylene/aolefin random copolymer, ethylene-vinyl acetate copolymer (EVA), styrene-butadiene block copolymer, hydrogenated styrene-butadiene block copolymer, and combinations thereof, optional plasticizer, optional filler, and optional additive.
RECYCLABLE CROSSLINKED POLYMERIC FOAM AND APPLICATIONS THEREOF
A recyclable crosslinked polymeric foam includes a reaction product of 0.1 to 10 parts by weight of a crosslinking agent and 0.1 to 5 parts by weight of a radical initiator, based on 100 parts by weight of a polymeric material. The crosslinking agent is represented by the following formula:
##STR00001##
wherein R is an alkylene group having 2 to 10 carbon atoms, an arylene group having 6 to 18 carbon atoms, or a cycloalkylene group having 6 to 18 carbon atoms.
Adsorptive temporary fixing sheet and method for manufacturing same
Provided is an adsorption temporary fixing sheet having a sufficient shear adhesive strength in a direction parallel to its surface, and having a weak adhesive strength in a direction vertical to the surface. Also provided is a method of producing such adsorption temporary fixing sheet. The adsorption temporary fixing sheet includes a foam layer including an open-cell structure, wherein, when a silicon chip vertical adhesive strength of a surface of the foam layer after 20 hours at each of such different temperatures as −40° C., 23° C., or 125° C. is represented by V1 (N/1 cm□), V2 (N/1 cm□), or V3 (N/1 cm□) and when a silicon chip shearing adhesive strength of the surface of the foam layer after 20 hours at each of the different temperatures (−40° C., 23° C., or 125° C.) is represented by H1 (N/1 cm□), H2 (N/1 cm□), or H3 (N/1 cm□), relationships of V1<H1, V2<H2, and V3<H3 are satisfied.