Compositions and methods for coating food cans
US-9221977-B2 · Dec 29, 2015 · US
Phenolic resin composition and phenolic resin cured product
US2017190900A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017190900-A1 |
| Application number | US-201515313207-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 27, 2015 |
| Priority date | May 30, 2014 |
| Publication date | Jul 6, 2017 |
| Grant date | — |
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Abstract
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The phenolic resin composition of the present invention includes a novolac-type phenolic resin, a resorcinol resin, and a curing agent, and is of a solid form. The mixing ratio of the resorcinol resin is preferably more than or equal to 1 part by mass and less than or equal to 100 parts by mass with respect to 100 parts by mass of the novolac-type phenolic resin. The mixing ratio of the curing agent is preferably more than or equal to 5 parts by mass and less than or equal to 25 parts by mass with respect to 100 parts by mass of a total amount of the novolac-type phenolic resin and the resorcinol resin. The phenolic resin cured product is obtained by heat-curing the phenolic resin composition.
First claim
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1 . A phenolic resin composition comprising a novolac-type phenolic resin, a resorcinol resin, and a curing agent, wherein the phenolic resin composition is in the form of a solid. 2 . The phenolic resin composition according to claim 1 , wherein the curing agent includes hexamethylenetetramine. 3 . The phenolic resin composition according to claim 1 , wherein the resorcinol resin has a number-average molecular weight of more than or equal to 150 and less than or equal to 10000. 4 . The phenolic resin composition according to claim 1 , wherein the mixing ratio of the resorcinol resin is more than or equal to 1 part by mass and less than or equal to 100 parts by mass with respect to 100 parts by mass of the novolac-type phenolic resin. 5 . The phenolic resin composition according to claim 1 , wherein the mixing ratio of the curing agent is more than or equal to 5 parts by mass and less than or equal to 25 parts by mass with respect to 100 parts by mass of a total amount of the novolac-type phenolic resin and the resorcinol resin. 6 . The phenolic resin composition according to claim 1 , wherein, when the phenolic resin composition is subjected to compression-molding under the conditions of a temperature of 180° C., a curing time of 3 minutes, and a pressure of 10 MPa, and then subjected to post-curing under the condition of a temperature of 180° C. for 8 hours to give a cured product having a thickness of 4 mm, the cured product has a bending strength measured under a 25° C. atmosphere in accordance with JIS K 6911, of more than or equal to 100 MPa and less than or equal to 300 MPa. 7 . The phenolic resin composition according to claim 1 , wherein, when the phenolic resin composition is subjected to compression-molding under the conditions of a temperature of 180° C., a curing time of 3 minutes, and a pressure of 10 MPa, and then subjected to post-curing under the condition of a temperature of 180° C. for 8 hours to give a cured product having a thickness of 4 mm, and the cured product is subjected to a heat treatment test at 240° C. for 100 hours, the variation of bending strength calculated by 100×(R 1 −R 2 )/R 1 is 35% or less, wherein the bending strength of a sheet of the cured product prior to the heat treatment test, as measured in a 25° C. atmosphere in accordance with JIS K 6911, is defined as R 1 , and the bending strength of the sheet of the cured product after the heat treatment test, as measured in a 25° C. atmosphere in accordance with JIS K 6911, is defined as R 2 . 8 . The phenolic resin composition according to claim 1 , wherein the resorcinol resin is a novolac-type resorcinol resin. 9 . The phenolic resin composition according to claim 1 , wherein the phenolic resin composition has a melting point of higher than or equal to 50° C. and lower than or equal to 150° C. 10 . A phenolic resin cured product obtained by heat-curing the phenolic resin composition according to claim 1 .
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- What does patent US2017190900A1 cover?
- The phenolic resin composition of the present invention includes a novolac-type phenolic resin, a resorcinol resin, and a curing agent, and is of a solid form. The mixing ratio of the resorcinol resin is preferably more than or equal to 1 part by mass and less than or equal to 100 parts by mass with respect to 100 parts by mass of the novolac-type phenolic resin. The mixing ratio of the curing …
- Who is the assignee on this patent?
- Sumitomo Bakelite Co
- What technology area does this patent fall under?
- Primary CPC classification C08L61/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jul 06 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).