Coating fibrous substrates
US3956554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1973 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Aug 30, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31533
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Carpets are backed with a composition comprising PA1 I. a polymercaptan containing at least two mercatpan groups per average molecule, PA1 Ii. a polyene having, per average molecule, at least two ethylenic double bonds each .beta. to an atom of nitrogen, sulfur, or oxygen, the sum of the mercaptan groups in the polymercaptan and of such ethylenic double bonds in the polyene being more than 4, and the composition is then cured on the carpet with or without the application of heat, optionally in the presence of a Bronsted acid, a Bronsted base, or a source of free radicals, as a curing accelerator. Such carpet backings cure at relatively low temperatures and so may be used in conjunction with a wide range of fibers and dyestuffs: the backings also retain their flexibility for prolonged periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.