Polyolefin diol

D. J. St. Clair, Coating Resins Based on Melamine Cured Polyolefin Diol, TPO in Automotive 96. 

Fig. 19 X-ray diffraction patterns for mixtures of 2C18-Mt and polyolefin diol(POLY-TEL H) (a) 2C18-Mt (b) POLYTEL H/2C18-Mt = 1 (c) POLYTEL H/2C18-Mt = 3 (d) POLYTEL H/2C18-Mt = 5 (e) POLYTEL H/2C18-Mt...

DJ St. Clair. Polyolefin diol in coatings for thermoplastic olefins. Shell Company, 980707. 

DJ St. Clair. Coating resins based on melamine cured polyolefin diol. Conference Proceedings, TPOs in Automotive, Novi, MI, 1996. 

Mixtures of a titanium complex of saturated diols, such as TYZOR OGT, and a titanium acylate, such as bis- -butyl-bis-caproic acid titanate, do not have a yellowing or discoloring effect on white inks used to print polyolefin surfaces (506). The complexes formed by the reaction of one or two moles of diethyl citrate with TYZOR TPT have an insignificant color on their own and do not generate color with phenol-based antioxidants (507). The complexes formed by the addition of a mixture of mono- and dialkyl phosphate esters to TYZOR TBT are also low color-generating, adhesion-promoting additives for use in printing polyolefin films (508). 

Oligomeric additives with broad MWD tend to be a problem in conventional HPLC conditions. In cases where no interest exists in the oligomer distribution it is common practice to solve the problem by creating a uniform structural unit useful for analysis. For example, isocratic (or gradient) LC-UV was used for the determination of the polymeric light stabiliser Tinuvin 622 in polyolefins using dissolution (toluene)/derivatisation (TBAH)-precipitation (alcohol) the diol formed was quantitatively determined by NPLC [653]. 

The processes described in Table 2 present a peculiar interest in the working out of new materials as polyurethanes. These last polymers are very often based on macro diols coming from polyethers or polyesters, a-co functional polyolefins being relatively uncommon. Hence, Rhein and Ingham [139] prepared macrodiols by ozonization of polyisobutylene in CC14 at... 

Hydroxylation of polyolefins by Milas reagent can be so arranged that only one double bond is affected e.g., cyclopentadiene gives a mixture of 3-cyclo-pentene-l,2-diol and 4-cyclopentene-l,3-diol.139,143 Another application of this method was the selective oxidation of / -carotene to vitamin-A aldehyde.144... 

Carotenoids are C40 polyolefinic metabolites derived from mevalonic acid. Almost all members of this group are acyclic or have chains that terminate with one or two 6-membered rings. All have ttie potential for a vast number of geometric isomers, but, in practice, almost all have entirely E (trans) configurations many carotenoids are colored because of the extended conjugated systems they contain. The structures for approximately 500 carotenoids are known, but only about one-fourth of these are from plants (Britton, 1983). The leaves of all green plants contain the same major carotenoids 3-carotene (usually 25-30% of the total) (1), lutein (about 45%) [(3/ ,3 / ,6 / )-3, -carotene-3,3 -diol] (2), violaxanthin [(3S,5R,6S,3 S,5% 6 5)-5,6,5, 6 -diepoxy-... 

A solid phosphite anti-oxidant has been developed, introduced by GE Specialty Chemicals, in its Ultranox range. Designed to meet the demand for a high-activity stabilizer with superior hydrocarbon stability and Improved handling characteristics, it is based on butyl ethyl propane diol chemistry, rather than the usual pentaerythritol. It has been granted FDA approval for food contact in certain applications and is expected to find applications in polyolefins, styrenics. PVC, engineering thermoplastics, elastomers, and adhesives. 

Graft copolymers between unsatnrated acids, especially acrylic acid and maleic anhydride (MA), and polyolefins (PE and PP) are widely used as surface modifiers and compatibilisers, sometimes in combination with bi-functional coupling agents [46], for talc, calcium carbonate and calcined clays. Such polymer coatings include polypropylene-maleic anhydride [47], polypropylene c/s-4-cyclohexene-l,2 dicarboxylic acid [48], polystearyl or polylauryl acrylate [49], polypropylene-acrylic acid, partially oxidised poly(butane diol) [50] and ethylene-vinyl acetate copolymers [51]. Acid-containing products can react with basic fillers. With most other types, they will simply adsorb on to the mineral surface, but they can form esters with some non-basic metal hydroxyls, notably silanols. 

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