Water-dispellable hot melt polyester adhesives
US4052368A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1976 |
| Grant date | Oct 4, 1977 |
| Priority date | — |
| Expiry date | Jun 21, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J7/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Water-dispellable, optionally pressure-sensitive hot melt resins having superior heat-aging properties are made by reacting (1) diols, of which at least 90% are polycaprolactonediol and/or monoalkylene diols, with (2) dicarboxylic acids, of which up to 95% are aliphatic, 5-25% are aromatic and have a magnesium or alkali metal sulfonate group attached to the ring, and the balance are non-sulfonated aromatic. These resins, which find use as hot melt adhesives for book binding and other purposes, can be readily dissolved or dispersed in a paper beater during a repulping operation. The product can be wound upon itself and supplied in roll form, optionally reinforced by a fibrous membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.