| 摘要 |
<p>#CMT# #/CMT# New flame-resistant adhesive or sealing compositions (A) contain (a) 0.1-99.9 wt. % adhesive or thermoplastic polymer and (b) 0.1-99.9 wt. % flame retardant(s) comprising dialkyl or diaryl phosphinic acid metal or organic base salts (I) and/or alkylene or arylene-diphosphinic acid metal or organic base salts (II). #CMT# : #/CMT# New flame-resistant adhesive or sealing compositions (A) contain (a) 0.1-99.9 wt. % adhesive or thermoplastic polymer and (b) 0.1-99.9 wt. % flame retardant(s) comprising phosphinic acid salts of formulae (I) and (II). R 1>, R 2>1-6C alkyl and/or aryl; R 3>1-10C alkylene, 6-10C arylene, alkylarylene or arylalkylene; M : Mg, Ca, Al, Zn, Sb, Sn, Ge, Zn, Ti, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base; and m, n, x : 1-4. The adhesive polymers (a) are selected from acrylate resins, polyurethane resins, (un)saturated polyester resins, styrene-butadiene copolymers, vinyl acetate copolymers, silicones, synthetic rubbers and/or polyolefin resins. #CMT#[Image]#/CMT# #CMT#USE : #/CMT# The use of (A) is claimed in shaped articles, specifically where the article comprises (i) a laminate with non-adhesive supporting layer(s) and adhesive layer(s) and at least one layer contains (A), (ii) a flexible copper-laminated substrate, a solder stopping lacquer and (A), (iii) (A) applied to a supporting layer and hardened by irradiation with light, (iv) (A) laminated onto a supporting film or (v) a support coated on both sides with (A). Also claimed is the use of (A), and/or the claimed (A)-containing shaped articles, for (i) flat cables, flexible or other circuit boards, automobile interior cladding, electrical semiconductors, covering layers, optical films for protecting windows against solar radiation, optical conductors, demagnetization coils, electrical component fixing devices, electrical insulation, medium or high voltage insulators, cable end closures or sleeves, fillers or capsules for electrical, electronic or photoelectric components, seals, coatings or insulation, (ii) bonding and laminating substrates as in (i), (iii) nappies or hospital, incontinence, feminine hygiene or operating theater articles, (iv) packaging materials, adhesive tapes, labels, insulating glass panes, pressure-sensitive adhesive masses or tapes, heat-activated adhesive tapes, encapsulation for electrical or electronic components or thermosetting epoxy molding compounds (EMC) or (v) bonding of cardboard layers, tubes, injection moldings or flexible printed circuit boards. #CMT#ADVANTAGE : #/CMT# The flame retardants (I) and (II) are non-tuminescent, stable on storage at elevated temperatures or in hot weather and resistant to high temperatures (e.g. in soldering baths). #CMT#ORGANIC CHEMISTRY : #/CMT# Preferred Flame Retardants: The flame retardant component (b) contains (I) and/or (II) at 70-100 wt. %, and especially comprises 30-99.9 (particularly 60-99) wt. % (I) and/or (II) and 0.1-70 (particularly 1-40) wt. % synergist (III), specifically comprising a nitrogen, phosphorus or phosphorus-nitrogen compound. (III) is especially allantoin, cyanuric acid, glycoluril, urea, melamine, melam, melem, melon, melamine phosphate, melamine pyrophosphat, melamine polyphosphate, melam polyphosphate, melem polyphosphate, melon polyphosphate, melamine cyanurate, piperazine phosphate, piperazine pyrophosphate, carbodiimide, sterically hindered phenols, phosphine oxide, hypophosphites, cyclic phosphonates, triaryl(alkyl)phosphite, alkyl- and aryl substituted phosphate, aluminum-, tin-, boron-, magnesium-, calcium- or cerium compounds, zinc oxide, zinc carbonate, zinc stannate, zinc borate, zinc hydrogen phosphate, zinc pyrophosphate, zinc oleate, zinc stearate and/or zinc phosphate. #CMT#POLYMERS : #/CMT# Preferred Polymers: The adhesive or thermoplastic polymers (a) are based on (i) glue, optionally modified cellulose, cellulose derivatives, starch, amylose, amylopectin or polysaccharide, (ii) elastomers such as natural rubber, (co)polymers of conjugated diene hydrocarbons, chloroprene (co)polymers, carboxylated elastomers, rubber derivatives, regenerate, synthetic rubber, carboxylated acrylonitrile-butadiene rubber, butyl rubber and elastomers based on (co)polymers of mono-ethylenically unsaturated aliphatic hydrocarbons (or their derivatives), (iii) (co)polymers of ethylene or propylene, isobutene copolymers, (co)polymers of at least 4C hydrocarbons and their derivatives (e.g. modified by chemical post-treatment, reaction with halogens (or halo compounds) or oxidation) or (iv) ethylene copolymers, organopolysiloxanes, atactic poly-alpha-olefins, polyisobutylene, styrene-butadiene-styrene or styrene-isoprene-styrene block polymers, polyamides, polyesters, polyvinyl acetate, copolyesters, butyl rubber, ternary or quarternary copolyamides, polyurethanes and/or epoxy resins, for use as hot melts. #CMT#DEFINITIONS : #/CMT# Preferred Definitions: R 1>, R 2>methyl, ethyl, n-propyl, isopropyl, n-butyl, sec. butyl, tert. butyl, n-pentyl and/or phenyl; R 3>methylene, ethylene, n-propylene, isopropylene, n-butylene, tert. butylene, n-pentylene, n-octylene, phenylene, naphthylene, methylphenylene, ethylphenylene, tert. butylphenylene, methylnaphthylene, ethylnaphthylene, tert. butylnaphthylene, phenylmethylene, phenylethylene, phenylpropylene or phenylbutylene. #CMT#EXAMPLE : #/CMT# A flame-resistant adhesive and sealing composition (epoxy melt adhesive composition) (A') was prepared from 10% Exolit OP1230 (RTM: diethylphosphinate; average particle size 22 microns), 67.5% DER 662 (RTM: epoxy resin), 9% Lotader AX8900 (RTM: ethylene copolymer), 9% Tone 767 (RTM: polyester resin) and 4.5% Dyhard 100S (RTM: hardener) by blending in a twin-screw extruder at 110-120[deg] C with a residence time of less than 2 minutes. Injection molded test rods of (A') (thickness 1.6 mm) had UL-94 flame retardency classification V-0. In climate tests at 80[deg] C and 95% relative humidity, (A') showed no bleeding. When (A') was melted at 100[deg] C and used to bond two defatted steel samples together, the peeling resistance was 5.7 N/mm.</p> |
