Resilient polyurethane foams of polydiene diols and tackifying resin
AssigneeShell Oil Company
InventorsDavid John St. Clair, Hector Hernandez
Life of this patent
Estimating the term…
Abstract
There is provided a high resilience polyurethane foam adhesive produced from a polydiene diol having a number average molecular weight from 1,000 to 20,000 and a functionality of from 1.6 to 2, an aromatic polyisocyanate, a tackifying resin and oil. In another embodiment, there is provided a polyurethane foam adhesive produced from a blend of a polydiene diol and a polydiene mono-ol, an aromatic polyisocyanate, and a tackifying resin.
Claims40
A polyurethane foam composition comprising:
- a hydrogenated polydiene diol having a number average molecular weight from 1,000 to 20,000;
- an aromatic polyisocyanate;
- a tackifying resin;
- oil;
- and
- a blowing agent.
A polyurethane foam composition comprising:
- a hydrogenated polydiene diol having a number average molecular weight from 1,000 to 20,000;
- a hydrogenated polydiene mono-ol having a number average molecular weight from 500 to 20,000;
- an aromatic polyisocyanate;
- a tackifying resin;
- and
- a blowing agent.
A polyurethane foam produced by a process comprising the steps of:
- combining a hydrogenated polydiene diol having a number average molecular weight from 1,000 to 20,000 and a functionality of from 1.6 to 2 hydroxyl groups per molecule with an aromatic polyisocyanate having a functionality of from 2.5 to 3.0 isocyanate groups per molecule, tackifying resin, and oil;
- and
- foaming the combined polydiene diol, aromatic polyisocyanate, tackifying resin and oil to form a tacky polyurethane foam.
A polyurethane foam produced by a process comprising the steps of:
- combining a hydrogenated polydiene diol having a number average molecular weight from 1,000 to 20,000 and a functionality of from 1.6 to 2 hydroxyl groups per molecule, a hydrogenated polydiene mono-ol having a number average molecular weight from 500 to 20,000, an aromatic polyisocyanate having a functionality of from 2.5 to 3.0 isocyanate groups per molecule and tackifying resin;
- and
- foaming the combined polydiene diol, polydiene mono-ol, aromatic polyisocyanate, and tackifying resin to form a resilient polyurethane foam.
A polyurethane foam produced by a process comprising the steps of:
- mixing 100 parts by weight of a hydrogenated polydiene diol having a number average molecular weight from 1,000 to 10,000 and a functionality of from 1.8 to 2.0 hydroxyl groups per molecule with from 50 to 100 parts by weight tackifying resin, from 50 to 100 parts by weight oil, from 1 to 2 parts by weight of water, from 0.4 to 0.8 parts by weight of an amine catalyst, from 0.3 to 0.6 parts by weight of a delayed action amine catalyst, and from 0.02 to 0.04 parts by weight of a silicon surfactant;
- and
- adding a polymeric isocyanate, wherein the polymeric isocyanate has a functionality of from 2.5 to 3.0 isocyanate groups per molecule and is added at a concentration which gives an equal number of isocyanate groups and hydroxyl groups.
A polyurethane foam produced by a process comprising the steps of:
- mixing 25 parts by weight of a hydrogenated polydiene diol having a number average molecular weight from 1,000 to 10,000 and a functionality of from 1.8 to 2.0 hydroxyl groups per molecule and 75 parts by weight of a hydrogenated polydiene mono-ol having a number average molecular weight from 500 to 10,000 with from 50 to 100 parts by weight tackifying resin, from 1 to 2 parts by weight of water, from 0.4 to 0.8 parts by weight of an amine catalyst, from 0.3 to 0.6 parts by weight of a delayed action amine catalyst, and from 0.02 to 0.04 parts by weight of a silicon surfactant;
- and
- adding a polymeric isocyanate to the polydiene diol mixture, wherein the polymeric isocyanate has a functionality of from 2.5 to 3.0 isocyanate groups per molecule and is added at a concentration which gives an equal number of isocyanate groups and hydroxyl groups.
Dependencies are inferred from the claim text.