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MDI based linings and membranes from prepolymers with very low free monomeric isocyanates
US9290606B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9290606-B2 |
| Application number | US-201113995346-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 19, 2011 |
| Priority date | Dec 20, 2010 |
| Publication date | Mar 22, 2016 |
| Grant date | Mar 22, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention relates to a two part polyurethane and/or polyurethane polyurea hybrid based system for making an elastomeric material, comprising an Iso part having low free monomer and an amine/polyol part, wherein the Iso part comprises a pre-polymer of polyurethane, and wherein the pre-polymer is an MDI based pre-polymer with low free MDI monomer and capped with isocyanate groups from a second relatively higher vapor pressure isocyanate and the pre-polymer contains less than about 0.3% total free monomer and has an NCO % in the range of about 0.1 to about 10%.
First claim
Opening claim text (preview).
We claim: 1. A two part polyurethane and/or polyurethane polyurea hybrid based system for making an elastomeric and/or plastic like material, comprising an Iso part and an amine/polyol part, wherein the Iso part comprises a diphenylmethane diisocyanate (MDI) based pre-polymer capped with isocyanate groups from toluene diisocyanate (TDI), wherein the pre-polymer has less than about 0.3% total free monomer and an NCO % in the range of about 0.1 to about 10%. 2. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 1 wherein the pre-polymer contains substantially no free MDI monomer. 3. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 1 wherein the pre-polymer has an NCO % in the range of about 0.5 to about 5%. 4. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 3 , wherein the pre-polymer has an NCO % in the range of about 1 to about 4%. 5. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 1 wherein the amine/polyol part comprises at least one polyol chosen from polyester and/or polyether polyols. 6. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 5 , wherein the at least one polyol chosen from polyester and/or polyether polyols is a branched polyester and polyether based polyol. 7. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 5 , wherein the amine/polyol part further comprises a secondary amine. 8. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 1 wherein the Iso part further comprises an HDI trimer. 9. A coating composition comprising the two part polyurethane system according to claim 1 . 10. A two part polyurethane and/or polyurethane polyurea hybrid based system according to claim 6 wherein the amine/polyol part further comprises a secondary amine.
Assignees
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Classifications
Polyamines · CPC title
High-molecular-weight compounds {(C08G18/2805 takes precedence)} · CPC title
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containing carboxylic ester groups derived from carboxylic acids other than acids of higher fatty oils or other than resin acids · CPC title
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- What does patent US9290606B2 cover?
- The present invention relates to a two part polyurethane and/or polyurethane polyurea hybrid based system for making an elastomeric material, comprising an Iso part having low free monomer and an amine/polyol part, wherein the Iso part comprises a pre-polymer of polyurethane, and wherein the pre-polymer is an MDI based pre-polymer with low free MDI monomer and capped with isocyanate groups from…
- Who is the assignee on this patent?
- Ulkem Ilhan, Andrews Adrian Ferguson, Winter Michael, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08G18/725. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).