TRIMETHYLOLPROPANE COPOLYMER

Adipic acid/isophthalic acid/neopentyl glycol/trimethylolpropane copolymer CAS 25950-34-9... 

Benzenedicarboxylic acid, polymer with 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-l, 3-propanediol and hexanedioic acid. See Adipic acid/isophthalic acid/neopentyl glycol/trimethylolpropane copolymer... 

Adipic acid/dimethylaminohydroxypropyl diethylenetriamine copolymer Adipic acid/epoxypropyl diethylenetriamine copolymer Adipic acid/isophthalic acid/neopentyl qlycol/trimethylolpropane copolymer Albumen Allyl stearate/VA copolymer... 

Octyl acryl am i de/acryl ates/buty I am i noethyl methacrylate copolymer Oleoyl hydrolyzed collagen Ouricury wax PEG-crosspolymer Pentaerythrityl hydrogenated rosinate Pentaerythrityl rosinate Perfluorodecalin Perfluorodimethylcyclohexane Perfluoromethylcyclopentane Perfluoroperhydrobenzyl tetralin Perfluoroperhydrophenanthrene Phthalic anhydride/adipic acid/castor oil/neopentyl glycol/PEG-3/trimethylolpropane copolymer Phthalic anhydride/benzoic acid/trimethylolpropane copolymer Phthalic... 

Photopolymerizable compositions based on monomeric acryflc or other ethylenicaHy unsaturated acid derivatives are becoming increasingly popular. When multiftmctional derivatives are employed, three-dimensional networks having high strength and abrasion resistance are possible on exposure to light. A typical composition may contain an ethoxylated trimethylolpropane triacrylate monomer, a perester phenacjhdene initiator (69), and an acryflc acid—alkyl methacrylate copolymer as binder. 

A different approach, although stdl working with essentially non-fiinctional polymers has been exemplified [114,115], in which, a 100% solid (solvent free) hot melt has been irradiated to produce pressure-sensitive adhesives with substantially improved adhesive properties. Acrylic polymers, vinyl acetate copolymers with small amounts of A,A -dimethylaminoethyl methacrylate, diacetone acrylamide, A-vinyl pyrrohdone (NVP) or A A have been used in this study. Polyfunctional acrylates, such as trimethylolpropane trimethacrylate (TMPTMA) and thermal stabilizers can also be used. 

GAP is synthesized by replacing C-Cl bonds of polyepichlorohydrin with C-N3 bonds.The three nitrogen atoms of the N3 moiety are attached linearly with ionic and covalent bonds in every GAP monomer unit, as shown in Fig. 4.6. The bond energy of N3 is reported to be 378 kj mol per azide group. Since GAP is a liquid at room temperature, it is polymerized by allowing the terminal -OH groups to react with hexamethylene diisocyanate (HMDl) so as to formulate GAP copolymer, as shown in Fig. 4.7, and crosslinked with trimethylolpropane (TMP) as shown in Fig. 4.8. The physicochemical properhes of GAP prepolymer and GAP copolymer are shown in Table 4.4 and Table 4.5, respectively.I ]... 

Since BAMO polymer is a solid at room temperature, BAMO monomer is copolymerized with tetrahydrofuran (THF) in order to formulate a liquid BAMO copolymer that is used as a binder in propellants and explosives, as shown in Fig. 4.9. The terminal OH groups of the BAMO-THF copolymer are cured by reaction with the NCO groups of hexamethylene diisocyanate (HMDl) and then cross-linking is carried out with trimethylolpropane (TMP). The physical properties of such a copolymer with a BAMO/THF composition of 60/40 mol% are shown in Table 4.7.1151... 

Typical gas-generating pyrolants include (1) AP pyrolant composed of AP, ap(0.50), and HTPB, htpb(0-50), which is cured with isophorone diisocy-anate(lPDl) (2) NP pyrolant composed of NC, nc(0-70) and NG, ng(0-30), which is plasticized with diethyl phthalate (DEP) and (3) GAP pyrolant composed of gly-cidyl azide copolymer, qap(0-85), which is cured with hexamethylene diisocy-anate(HMDl) and cross-linked with trimethylolpropane (TMP). 

Typical gas-generating propellants are (1) AP-PB composite propellant composed of 50% AP and 50% HTPB that is cured with isophorone diisocyanate (IPDI), (2) NC-NG double-base propellant composed of 70% NC and 30% NG that is plasticized with diethyl phthalate (DEP), and (3) GAP propellant composed of GAP copolymer that is cured with 12.0% hexamethylene diisocyanate (HMDI) and cross-linked with 3.2 % trimethylolpropane (TM P). 

Using the principles of cationic copolymerisation of THF with alkylene oxides by activated monomer mechanism, various polyethers diols or triols, copolymers THF-alkylene oxides were synthesised [5]. The diols are obtained by copolymerisation initiated by 1,4 butane diol or another diol [56-59]. The triols are obtained by copolymerisation initiated by glycerol (or other triol such as trimethylolpropane) [54]. 

Again, opportunities are illustrated. Specifically, electron irradiation can be used to crosslink polymeric systems. This can be accomplished by irradiating the polymer alone, usually at a temperature above Tg (and above Tm if pertinent) ). Or it can be accomplished by irradiating a polymer in the presence of a polymerizable monomer, as has been done for many years in the wire and cable industry e.g., polyvinyl chloride plus a multifunctional monomer like trimethylolpropane-trimethacrylate(3. Electron irradiation can also be used to form graft copolymers. In fact, this can be accomplished in... 

Rasmussen found that copolymers comprising cross-Unked networks of meth-acrylic acid and 2-hydroxy methacrylate, cross-linked with cross-linking agents such as ethylene glycol dimethacrylate and 1,1,1-trimethylolpropane trimethacrylate had tensile strengths well above the tensile strengths of polyacrylamide type materials (Table 4.1) [6]. 

---