Radiation curable acrylate-terminated polymers having polycarbonate repeating units
US6451958B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymer having repeating polycarbonate moieties of the formula (I)(Acr)y(A)(Q)(PC)[(Q)(PC)]x(Q)(A)(Acr)y  (I)wherein(Acr)y(A) is the residue of hydroxyalkyl acrylate or hydroxyalkyl methacrylate having an alkyl moiety, A, and where said alkyl, A, has 2 to 5 carbon atoms and wherein Acr is an acrylate or methacrylate moiety;Q is the residue of one or more organic polyisocyantes which are connected with A via a urethane linkage;PC is the residue of an alkylene diol polycarbonate of the formula (II)HO(ROCOO)nROH  (II)R is one or more (C2 to C10) alkylene or one or more (C6 to C12) aromatic group;y is an integer from 1 to 5;x is from 1 to 20;PC and Q are connected via a urethane group.The acrylate terminate polymers are useful for radiation cured coatings which have superior adhesion and reverse impact strength, especially when applied to plastic substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.