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US 8,895,650 B2Granted
Phthalate-free isocyanurate formulations
AssigneesLANXESS Deutschland GmbH, Bayer Intellectual Property GmbH
InventorsThomas Augustin, Josef Sanders
Life of this patent
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Abstract
The present invention relates to novel low-monomer low-viscosity high-activity formulations composed of isocyanurate containing isocyanate groups, exclusively based on 2,4-diisocyanatotoluene and phthalate-free plasticizers, to the use thereof as adhesion promoters with improved adhesion for coating compositions based on plasticized polyvinyl chloride, and to coatings and coated substrates.
Claims12
A composition comprising:
- A) from 15 to 50% by weight isocyanurate containing isocyanate groups,
- B) from 84.99 to 49.99% by weight n-alkyl monobenzoates or isoalkyl monobenzoates, and
- C) from 0.01 to 0.099% by weight 2,4-toluene diisocyanate (2,4-TDI),
- wherein the composition has a viscosity of 5,000 mPas/23° C. to 18,000 mPas/23° C., with the proviso that:
- i) the isocyanurate containing isocyanate groups is produced by trimerization of 2,4-TDI and
- ii) the total of all the percentages by weight is 100%.
3 more elements
Dependencies are inferred from the claim text.