IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0078301
(1979-09-24)
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발명자
/ 주소 |
- Throne James L. (Naperville IL) Graves
- Jr. Richard E. (Elgin IL)
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출원인 / 주소 |
- Standard Oil Company (Indiana) (Chicago IL 02)
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인용정보 |
피인용 횟수 :
17 인용 특허 :
1 |
초록
▼
A process for the production of foamed products from an unsaturated polyester resin composition, said composition comprising polyester resin, unsaturated monomer, a promotor, initiator, physical blowing agent, and compatible surfactant whereby a known gel time “T”results, foaming said composition by
A process for the production of foamed products from an unsaturated polyester resin composition, said composition comprising polyester resin, unsaturated monomer, a promotor, initiator, physical blowing agent, and compatible surfactant whereby a known gel time “T”results, foaming said composition by exposing it to microwave radiation prior to 1 T, thereafter permitting said foam structure to exotherm to obtain a fully cured product. Preferably the resin composition is exposed to the radiation between 0.2 and 0.7 T. Due to the foamed nature of these products, they will find many uses where insulation and light weight is important. End products include foamed unsaturated polyester resins and products incorporating the same such as patio blocks containing a polyester gel-coat, the gel-coat containing sand, decorative chips, or other decorative aggregate. The foam is a mixture of polyester resin and fillers and has a density of about 35 pounds per cubic foot. Another product is a roofing panel containing foam coated with a resin gel-coat with suitable additives for weather resistance, decorative texture, etc. The foam density is in the range of 13 pounds per cubic foot. Structural details can be added. Another product disclosed is an architectural wall or curtain panel having a weather resistant exterior surface, an unsaturated polyester foam core, and a decorative or fire-resistant interior surface. After the foam is made, the lamination can take place as a subsequent operation. Other products include profile shapes of the foam which can be produced by a continuous process to any desired shape such as a right angle structure. Three dimensional shapes can also be prepared consisting solely of the polyester foam or with a coating.
대표청구항
▼
A process for the production of foamed products from and unsaturated polyester resin composition, said composition comprising flexible or semi-rigid polyester resin, unsaturated monomer, a promoter, a peroxide initiator, physical blowing agent, and compatible surfactant whereby a known gel time “T”r
A process for the production of foamed products from and unsaturated polyester resin composition, said composition comprising flexible or semi-rigid polyester resin, unsaturated monomer, a promoter, a peroxide initiator, physical blowing agent, and compatible surfactant whereby a known gel time “T”results, foaming said composition by exposing it to microwave radiation having a frequency of at least 640 MHz prior to 1 T, thereafter permitting said foam structure to exotherm to obtain a fully cured product, said foaming taking place at or slightly prior to 1 T.
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